{"title":"Viper Unassembled Clutches","description":"\u003cp\u003eUnassembled Viper clutches sold as kits so you can choose drum color, venting, and disk count before assembly. Two-disk and 1.0 inch big-block disk options are listed separately.\u003c\/p\u003e","products":[{"product_id":"viper-unassembled-big-block-1-0-disk-clutch-390-fcdc-kit-390","title":"Viper Big Block Unassembled 4-Disk Clutch Kit - 1.0\" Bore - Outlaw \/ Modified","description":"\u003cp\u003eTransferring massive torque from a big block engine to the track demands a driveline engineered for absolute dominance, making this unassembled Viper clutch a mandatory upgrade when sourcing \u003cstrong\u003enew kart parts\u003c\/strong\u003e for high-horsepower builds. Designed around a robust 1.0\" bore and a heavy-duty steel turbo pattern drum, this 4-disk, 6-spring clutch kit ensures zero slip under extreme loads. By assembling the components yourself, you unlock the ability to custom-tune engagement weights and spring rates to match your engine's exact power band.\u003c\/p\u003e\n\n\u003ch2\u003eMaximizing Grip with Premium Go Kart Tires\u003c\/h2\u003e\n\u003cp\u003eA high-performance clutch is only as effective as your contact patch. To harness the unbridled acceleration this four-disk Viper clutch provides, you must pair it with high-grip \u003cstrong\u003ego kart tires\u003c\/strong\u003e. The progressive bite of the four-disk configuration prevents sudden shock loads that can break traction, allowing you to launch out of corners with precision. Whether you are running outlaw classes or heavily modified beasts, this clutch distributes the load evenly across its floaters and linings, extending component life even during grueling heat cycles.\u003c\/p\u003e\n\n\u003ch2\u003eIntegrating Wheels and Accessories for Total Control\u003c\/h2\u003e\n\u003cp\u003eBuilding a dominant kart requires a holistic approach to your chassis and driveline. As you upgrade your \u003cstrong\u003ewheels and accessories\u003c\/strong\u003e to handle increased cornering forces, the Viper Big Block clutch ensures your power delivery remains perfectly linear. The turbo drum pattern is specifically engineered to shine with aftermarket Buller-style sprockets, minimizing alignment issues for peak mechanical efficiency. Proper alignment reduces parasitic drag, ensuring every ounce of horsepower reaches the rear axle.\u003c\/p\u003e\n\n\u003ch2\u003ePrecision Tuning Beyond Wheel Accessories\u003c\/h2\u003e\n\u003cp\u003eTrue racers know that winning is in the details. Just as you might meticulously balance your \u003cstrong\u003ewheel accessories\u003c\/strong\u003e or fine-tune an \u003cstrong\u003elo206 carburetor kit\u003c\/strong\u003e for a different class, assembling this Viper clutch yourself allows for unparalleled customization. The unassembled format is perfect for engine builders and solo racers who demand exact control over their stall speed and engagement characteristics. The steel construction resists deformation under extreme heat, guaranteeing consistent performance lap after lap.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.0\" Bore Compatibility:\u003c\/strong\u003e Precision-machined to fit big block crankshafts perfectly for direct-drive integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Disk Configuration:\u003c\/strong\u003e Multiplies friction surface area to handle extreme horsepower and torque without slipping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Turbo Pattern Drum:\u003c\/strong\u003e Ensures robust aftermarket sprocket fitment and superior heat dissipation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnassembled Format:\u003c\/strong\u003e Allows builders to custom-tune spring rates and weights for precise track-specific engagement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Resists bell deformation and wear during grueling racing sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6-Spring Design:\u003c\/strong\u003e Provides highly adjustable stall speeds tailored to your specific engine characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this clutch kit ready to run out of the box?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this is an unassembled kit. It is designed for engine builders and racers who want to custom-tune their engagement weights and spring rates to match specific engine power bands and track conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What engine types is the 1.0\" bore compatible with?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This clutch is precision-machined for big block crankshafts. It is specifically engineered for high-horsepower outlaw and modified karting applications requiring a 1.0\" shaft diameter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why choose a 4-disk configuration over a 2 or 3-disk setup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 4-disk configuration significantly increases the friction surface area. This is essential for big block engines to transfer massive torque to the track without slipping, ensuring consistent power delivery under extreme loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use my existing sprockets with this clutch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This kit features a steel turbo pattern drum, which is designed to be compatible with most aftermarket Buller-style sprockets. This ensures a secure fit and helps maintain proper alignment to reduce parasitic drag.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for this clutch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Because this is a high-performance racing clutch, you should regularly inspect the friction disks and floater plates for wear after grueling heat cycles. Ensure the assembly remains clean and properly aligned to maximize the lifespan of the components.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-big-block-drive-hub-1-0-bore-fcdc-dh4t\"\u003eViper Big Block 4-Disc Drive Hub - 1.0\" Bore - Open\/Modified\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-steel-4-disc-turbo-pattern-fcdc-sd4t\"\u003eViper Steel 4-Disc Clutch Drum with Turbo Pattern for Big Block Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-big-block-drive-plate-fcdc-tdp\"\u003eHeavy-Duty Viper Big Block Drive Plate for 1.0\" Clutch Systems\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-big-block-key-bckstar\"\u003eViper Big Block Stepped Clutch Key for Optimal Engagement\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-big-block-crank-spacer-bccsstar\"\u003eHardened Steel Viper Big Block Crank Spacer for Precise Alignment\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":52562712428862,"sku":"FCDC-KIT#390","price":374.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-big-block-1-0-disk-clutch-390-fcdc-kit-390.jpg?v=1763114676"},{"product_id":"viper-unassembled-big-pin-6-spring-clutch-without-driver-two-disk-silver-fcdc-kit-es2","title":"Silver Big Pin 6-Spring Viper Unassembled Two-Disk Clutch Kit","description":"\u003cp\u003eReady to assemble a powerhouse? This Viper Unassembled Big Pin 6-Spring Clutch targets 3\/4\" shafts, delivering a two-disk setup without the driver for your custom touch. The silver lever support and aluminum drum form a lightweight yet robust core.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper big-pin 6-spring two-disk clutch kit ships as loose components and requires basic mechanical assembly skill.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes clutch discs, springs, pressure plate, and silver fixed drum\u003c\/li\u003e\n\u003cli\u003eDoes not include the drive sprocket (driver) - purchase separately to match your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eA kart shop can assemble it for you if needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cp\u003eFeaturing big pin levers (FCDC-BPL) and matching dowels (FCDC-DP6), it handles higher stresses for aggressive driving. The included SMCFD8HP linings provide grip that bites hard, while the gold FCDC-SP85 springs— one blue, five silver retainers— tune engagement RPM precisely.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTwo 6-piece weight kits allow versatile balancing\u003c\/li\u003e\n\u003cli\u003eExcludes sprocket for flexible gearing choices\u003c\/li\u003e\n\u003cli\u003ePromotes faster setups with pre-matched components\u003c\/li\u003e\n\u003cli\u003eEnhances track organization by reducing loose parts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEnvision launching off the line with zero hesitation: this clutch's 6-spring design distributes force evenly, minimizing wear and maximizing torque transfer. For sprint or oval racers, the big pin upgrade means durability under torque, preventing failures that cost positions.\u003c\/p\u003e\u003cp\u003eAssembly is intuitive, letting you integrate it into existing drive-lines seamlessly. The silver aesthetic not only appeals visually but signals quality construction that withstands heat and vibration. Customize weights to suit track lengths— lighter for tight courses, heavier for straights— unlocking speed potential tailored to you.\u003c\/p\u003e\u003cp\u003eIn the competitive kart world, where reliability equals victories, this kit stands out. It empowers builders to create a clutch that responds to throttle inputs instantly, aiding in better lap consistency. No driver means you add your preferred hub, ensuring perfect alignment with your engine.\u003c\/p\u003e\u003cp\u003eFrom pit to podium, this unassembled marvel keeps things efficient: fewer trips for missing pieces, more time testing. Viper's attention to detail shines, making it a favorite among tuners seeking that extra edge in power delivery. Build it, race it, win it. SKU: FCDC-Kit#ES2.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include a driver?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this kit is sold without a driver. This allows you to select the specific hub and sprocket size that best fits your engine and gearing requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size shaft is this clutch designed for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This Viper clutch kit is engineered for standard 3\/4\" engine shafts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why choose the \"Big Pin\" design over standard clutches?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The Big Pin levers (FCDC-BPL) are designed to handle higher stress and torque loads, providing increased durability and preventing mechanical failures during aggressive racing conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I tune the engagement RPM?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e You can tune the engagement by adjusting the weight kits and utilizing the included gold FCDC-SP85 springs. Lighter weights are generally used for tighter tracks, while heavier weights are better suited for tracks with long straights.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this clutch suitable for both sprint and oval racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the robust aluminum drum and 6-spring design provide the versatility and heat resistance needed for both sprint and oval track applications.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-lever-support-big-pin-fcdc-lsbps\"\u003eViper Big Pin Clutch Lever Support - Silver Aluminum - Modified \u0026amp; Stock Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-2-disc-aluminum-silver-fcdc-ad2s\"\u003eSleek Silver Viper 2-Disc Aluminum Clutch Drum for Kart Enthusiasts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-2-disc-aluminum-silver-vented-fcdc-vsad\"\u003eVented Silver Viper 2-Disc Aluminum Clutch Drum for Heat Management\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-pressure-plate-fcdc-pp\"\u003eHigh-Performance Viper Clutch Pressure Plate for Superior Engagement\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-inner-thrust-bearing-fcdc-itb\"\u003eViper Inner Thrust Bearing for Clutch Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":52562712494398,"sku":"FCDC-Kit#ES2","price":347.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-big-pin-6-spring-clutch-without-driver-two-disk-silver-fcdc-kit-es2.jpg?v=1763114678"},{"product_id":"viper-unassembled-four-disk-clutch-3-4-bore-with-turbo-pattern-drum-fcdc-kit-45t","title":"Turbo Pattern Drum Viper Unassembled Four-Disk Clutch 3\/4\" Bore","description":"\u003cp\u003eGear up for turbo applications with this specialized Viper four-disk clutch kit. The turbo pattern steel drum sets it apart, designed for seamless sprocket mating in 3\/4\" bore setups, complete with all FCDC-4D essentials.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper four-disk clutch kit for kart racing ships as loose components - not bolted together and not ready to install.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClutch discs, springs, pressure plate, and turbo-pattern drum\u003c\/li\u003e\n\u003cli\u003eDoes not include the drive sprocket (driver) - purchase separately matched to your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eBasic mechanical assembly skill recommended or have a kart shop assemble it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cp\u003eRockstar disks and .095\" floaters provide the grip needed for demanding pulls, while the two-piece drive hub offers flexibility. For turbo sprockets, tweak the 10-32x7\/8 SHCS height or opt for FHCS with countersinking on the drive plate— the supplied longer key locks it all in.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTurbo pattern for direct, high-power compatibility\u003c\/li\u003e\n\u003cli\u003eMulti-disk design multiplies torque efficiently\u003c\/li\u003e\n\u003cli\u003eBuild process encourages custom speed tuning\u003c\/li\u003e\n\u003cli\u003eOrganized kit for efficient pit work\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTurbo engines thrive on quick spool and strong hook-up; this clutch delivers by engaging firmly without chatter, channeling power to the rear wheels for explosive starts. The pattern ensures no adapters needed, streamlining your drive-line.\u003c\/p\u003e\u003cp\u003eAssemblers love the mod options— fine-tune for boost levels, ensuring the clutch holds without slipping under peak loads. This setup shines in modified classes where raw power meets track limits.\u003c\/p\u003e\u003cp\u003eHeat management via multiple disks prevents glazing, supporting longer stints without intervention. Viper's precision means balanced rotation, reducing vibration for smoother handling and faster laps.\u003c\/p\u003e\u003cp\u003ePicture dominating straights with unyielding drive: that's the promise here. The kit's completeness minimizes downtime, keeping your focus on racing, not sourcing. For turbo kart enthusiasts, it's the ultimate build base, fostering organized, high-speed configurations that win races. Adapt, assemble, accelerate. SKU: FCDC-KIT#45T.\u003c\/p\u003e\u003cp\u003eExtra tip: the countersink method mimics 1.0\" bore reliability, enhancing overall stability for aggressive shifts.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the turbo pattern drum in this kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The turbo pattern drum is specifically engineered for high-power, turbo-charged applications. It allows for direct sprocket mating without the need for additional adapters, ensuring a more reliable and efficient power transfer to the rear wheels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I customize the engagement of this four-disk clutch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this kit is designed for tuners. You can fine-tune the clutch by adjusting the 10-32x7\/8 SHCS height or by using FHCS with countersinking on the drive plate to suit your specific boost levels and track conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this clutch suitable for modified racing classes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. This setup is built for modified classes where raw power is high. The multi-disk design and .095\" floaters provide the necessary grip to prevent slipping under peak loads, while the heat management properties support longer race stints.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the advantage of the two-piece drive hub included in this kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The two-piece drive hub offers increased flexibility during assembly and maintenance, allowing for easier adjustments and component swaps when you are working in the pits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit come with everything needed for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The kit includes the essential FCDC-4D components, including the turbo pattern drum, Rockstar disks, .095\" floaters, and a longer key to lock the assembly onto your 3\/4\" bore crankshaft securely.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-unassembled-four-disk-clutch-fcdc-kit-45\"\u003eViper FCDC-KIT#45 Unassembled 4-Disk Clutch Kit - 3\/4\" Bore - High Torque Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-steel-4-disc-turbo-pattern-fcdc-sd4t\"\u003eViper Steel 4-Disc Clutch Drum with Turbo Pattern for Big Block Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drive-hub-4-disc-fcdc-dh4\"\u003eHeavy-Duty 4-Disc Viper Clutch Drive Hub with 3\/4\" Bore\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-floater-plate-standard-095-fcdc-fp95\"\u003eStandard Viper Clutch Floater Plate .095 Inch Thickness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-inner-thrust-bearing-fcdc-itb\"\u003eViper Inner Thrust Bearing for Clutch Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":52562712559934,"sku":"FCDC-KIT#45T","price":374.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-four-disk-clutch-3-4-bore-with-turbo-pattern-drum-fcdc-kit-45t.jpg?v=1763114679"},{"product_id":"viper-unassembled-four-disk-clutch-fcdc-kit-45","title":"Viper FCDC-KIT#45 Unassembled 4-Disk Clutch Kit - 3\/4\" Bore - High Torque Racing","description":"\u003cp\u003eMulti-disk power multiplication is essential for high-torque applications, which is why serious racers trust our go karts and parts selection for the Viper FCDC-KIT#45 Unassembled Four-Disk Clutch Kit. Engineered specifically for 3\/4\" bore applications, this kit delivers raw, uncompromising power transfer to the track. By building the clutch yourself, you gain absolute control over engagement pressures and spring rates, eliminating the stock compromises that cost you tenths of a second out of the corners. This kit features a small pattern steel drum that withstands the brutal thermal loads of aggressive racing, ensuring your setup remains consistent from the green flag to the checkered.\u003c\/p\u003e\n\u003ch2\u003eOptimizing Your Racing Go Kart Motor\u003c\/h2\u003e\n\u003cp\u003eHarnessing the full potential of your racing go kart motor means managing torque efficiently. The four-disk architecture provides massive surface area, allowing the Rockstar friction disks to bite hard without slipping. This translates to explosive acceleration, especially when you are trying to maximize your briggs and stratton lo206 horsepower output on technical tracks. The included .095\" floaters promote even disk wear, mitigating the fade often experienced during sustained high-RPM runs. When paired with premium engine oil, this clutch assembly ensures your driveline operates at peak thermal efficiency.\u003c\/p\u003e\n\u003ch2\u003eModular Design for Wheel Hub Parts Integration\u003c\/h2\u003e\n\u003cp\u003eThe innovative two-piece drive hub simplifies integration with your existing chassis setup. Advanced tuners will appreciate the hub's modularity, allowing quick adjustments for turbo sprockets without requiring a complete teardown. Whether you are trimming the 10-32x7\/8 SHCS or countersinking FHCS hardware, the Viper clutch adapts to your specific gearing needs. Just like precision wheel hub parts, every component in this kit—down to the supplied longer keyway—is designed for unwavering alignment and maximum power transfer.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications \u0026amp; Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Disk Architecture:\u003c\/strong\u003e Amplifies engagement surface area for high-torque racing engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall Pattern Steel Drum:\u003c\/strong\u003e Withstands extreme abuse and thermal stress in competitive classes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRockstar Friction Disks:\u003c\/strong\u003e Delivers premium bite and resists fade under hot track conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e.095\" Steel Floaters:\u003c\/strong\u003e Promotes even disk wear and extends the longevity of the clutch pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-Piece Drive Hub:\u003c\/strong\u003e Simplifies sprocket swaps and driveline maintenance without full disassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Keyway Included:\u003c\/strong\u003e Prevents slippage under heavy load, ensuring perfect shaft alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnassembled Kit Format:\u003c\/strong\u003e Allows builders to precisely calibrate spring pressures for custom engagement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor kart classes that demand relentless durability, the Viper four-disk clutch is your foundation for victory. Organized components mean faster rebuilds between heat races, keeping you on the track and out of the pits. Tailor your engagement, torque it to spec, and dominate the competition.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose an unassembled clutch kit over a pre-assembled one?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The unassembled format allows you to precisely calibrate spring pressures and engagement settings to match your specific engine build and track conditions. It provides the builder with absolute control over the clutch's performance characteristics, which is critical for competitive racing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this clutch compatible with my 3\/4\" crankshaft?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the Viper FCDC-KIT#45 is specifically engineered for 3\/4\" bore applications, making it a perfect fit for standard racing kart engines like the Briggs \u0026amp; Stratton LO206.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the four-disk architecture?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The four-disk design significantly increases the surface area for power transfer. This allows the clutch to handle higher torque loads without slipping, resulting in more explosive acceleration out of corners compared to two or three-disk setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I maintain the clutch pack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e For optimal performance, you should inspect your friction disks and floaters between heat races. Check for signs of excessive heat or uneven wear. Keeping the assembly clean and properly lubricated with premium engine oil will extend the life of the components and ensure consistent engagement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I change the sprocket without taking the whole clutch apart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the innovative two-piece drive hub design allows for quick sprocket swaps, saving you valuable time in the pits during race day.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-unassembled-four-disk-clutch-3-4-bore-with-turbo-pattern-drum-fcdc-kit-45t\"\u003eTurbo Pattern Drum Viper Unassembled Four-Disk Clutch 3\/4\" Bore\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-steel-4-disc-fcdc-sd4\"\u003eHeavy-Duty Viper Steel 4-Disc Clutch Drum for Maximum Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drive-hub-4-disc-fcdc-dh4\"\u003eHeavy-Duty 4-Disc Viper Clutch Drive Hub with 3\/4\" Bore\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-pressure-plate-fcdc-pp\"\u003eHigh-Performance Viper Clutch Pressure Plate for Superior Engagement\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-floater-plate-standard-095-fcdc-fp95\"\u003eStandard Viper Clutch Floater Plate .095 Inch Thickness\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":52562712625470,"sku":"FCDC-KIT#45","price":374.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-four-disk-clutch-fcdc-kit-45.jpg?v=1763114680"},{"product_id":"viper-unassembled-two-disk-clutch-1-silver-fcdc-kit-1","title":"Silver Viper Unassembled Two-Disk Clutch Kit for Custom Kart Builds","description":"\u003cp\u003eTake control of your kart's power delivery by assembling the Viper Unassembled Two Disk Clutch #1 Silver yourself. This kit arrives with a sleek silver drum and matching lever support, packed with every essential part from the standard FCDC-2D model.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper two-disk clutch kit ships as loose components for your custom kart build - not bolted together or ready to install.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClutch discs, springs, pressure plate, and silver fixed drum\u003c\/li\u003e\n\u003cli\u003eDrive sprocket (driver) not included - purchase separately to match your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eBasic mechanical assembly skill recommended (a kart shop can assemble it)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cp\u003eCurrently equipped with high-performance SMCFD8HP linings, it offers exceptional friction for immediate torque transfer, reducing slip and boosting your start-line advantage. Whether you're a mechanic or racer, the unassembled format lets you tweak weights, springs, and alignments to match your engine's output perfectly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSilver components for a professional, lightweight finish\u003c\/li\u003e\n\u003cli\u003eComplete kit minimizes ordering multiple parts\u003c\/li\u003e\n\u003cli\u003eSupports custom tuning for varied track conditions\u003c\/li\u003e\n\u003cli\u003eEnhances organization in your garage with all pieces included\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePicture this: a clutch that engages exactly when you need it, propelling you ahead of the pack with seamless power. This isn't just a kit; it's your ticket to personalized speed. For those in competitive karting, assembling it ensures no compromises on fit or function, leading to lap times that turn heads.\u003c\/p\u003e\u003cp\u003eDelve deeper into Viper's engineering— the silver drum dissipates heat efficiently, preventing fade during long heats, while the lever support provides stable pivot points for consistent shifts. Pair it with your choice of sprockets for a drive-line that's as unique as your racing style.\u003c\/p\u003e\u003cp\u003eIn the world of kart racing, where every gram and millisecond counts, this unassembled clutch empowers you to build a system optimized for victory. From junior classes to pro circuits, it's the foundation for reliable, high-speed performance that keeps you organized and focused on the win. Don't settle for off-the-shelf; craft your edge today. SKU: FCDC-KIT#1.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose an unassembled clutch kit over a pre-assembled one?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The unassembled format is designed for racers who want full control over their setup. It allows you to precisely tune your spring tension, weight distribution, and alignment to match your specific engine output and track conditions, ensuring you get the most efficient power transfer possible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for the SMCFD8HP linings?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e To maintain optimal friction and prevent glazing, regularly inspect the linings for wear after each race weekend. Keep the clutch assembly clean and free of debris, and ensure the silver drum is wiped down to maintain its heat-dissipation properties.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this kit compatible with different sprocket sizes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this kit is designed to be versatile. You can pair the assembly with your choice of sprockets to customize your drive-line ratio, allowing you to fine-tune your kart for either acceleration or top-end speed depending on the track layout.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include everything needed for assembly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the FCDC-KIT#1 comes with all essential parts from the standard FCDC-2D model, including the silver drum, lever support, and high-performance linings, allowing you to build a complete, race-ready clutch system.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-unassembled-two-disk-clutch-1-silver-vented-fcdc-kit-1v\"\u003eVented Silver Viper Unassembled Two-Disk Clutch for High-Heat Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-2-disc-aluminum-silver-fcdc-ad2s\"\u003eSleek Silver Viper 2-Disc Aluminum Clutch Drum for Kart Enthusiasts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-lever-support-fcdc-ls\"\u003eSilver Aluminum Viper Clutch Lever Support for Small Pin Levers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-pressure-plate-fcdc-pp\"\u003eHigh-Performance Viper Clutch Pressure Plate for Superior Engagement\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-floater-plate-standard-095-fcdc-fp95\"\u003eStandard Viper Clutch Floater Plate .095 Inch Thickness\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":52562712691006,"sku":"FCDC-KIT#1","price":281.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-two-disk-clutch-1-silver-fcdc-kit-1.jpg?v=1763114681"},{"product_id":"viper-unassembled-two-disk-clutch-1-silver-vented-fcdc-kit-1v","title":"Vented Silver Viper Unassembled Two-Disk Clutch for High-Heat Racing","description":"\u003cul\u003e\n\u003cli\u003eVented drum design promotes airflow to reduce overheating\u003c\/li\u003e\n\u003cli\u003eShips with premium SMCFD8HP disks for optimal friction\u003c\/li\u003e\n\u003cli\u003e.095\" floater ensures even pressure distribution\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAssemble a clutch that thrives in the heat of competition with this Viper kit. The silver vented drum not only looks sharp but actively cools during prolonged runs, maintaining clutch integrity when others falter.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper two-disk clutch kit ships as loose components for high-heat racing. It does not include the drive sprocket.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClutch discs, springs, pressure plate, vented silver fixed drum\u003c\/li\u003e\n\u003cli\u003eDrive sprocket must be purchased separately to match your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eBasic mechanical assembly skill recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cp\u003eFor racers pushing limits, this setup translates to sustained performance— no more power loss from thermal buildup. Customize the assembly to your specs, incorporating weights and springs that align with your kart's gearing for explosive acceleration out of turns.\u003c\/p\u003e\u003cp\u003eThink about the benefits: organized parts mean less scramble in the pits, and the vented feature extends component life, saving you rebuilds. Viper's engineering shines here, blending form and function for track-ready reliability.\u003c\/p\u003e\u003cp\u003eFrom the lever support to the precise linings, every element supports faster, more controlled engagements. Whether upgrading a clone or building from scratch, this kit elevates your drive-line to pro levels, ensuring you're always a step ahead. Detailed instructions make assembly straightforward, even for intermediate builders.\u003c\/p\u003e\u003cp\u003eEmbrace the freedom of customization— select compatible sprockets and hubs to fine-tune for your class. In karting circles, a well-vented clutch like this is praised for delivering consistent laps without fade, directly contributing to better race positions. Invest in this unassembled wonder for a kart that performs as hard as you drive. SKU: FCDC-Kit#1V.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why choose a vented drum for my karting clutch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The vented drum design is engineered to promote airflow, which significantly reduces thermal buildup during long races. By keeping the clutch cooler, you prevent power loss caused by heat fade and extend the lifespan of your friction disks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this clutch kit difficult to assemble?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This kit is designed for intermediate builders. It comes unassembled, allowing you to customize your setup with specific weights and springs to match your kart's gearing. Detailed instructions are included to guide you through the assembly process.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the purpose of the .095\" floater plate included in this kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The .095\" floater plate is a standard component that ensures even pressure distribution across the two friction disks. This consistency is vital for smooth, controlled engagements and reliable performance off the corners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this clutch for different racing classes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this kit is highly versatile. Because it is unassembled, you can fine-tune the engagement by selecting compatible sprockets and hubs that align with the specific requirements of your racing class.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-2-disc-aluminum-silver-vented-fcdc-vsad\"\u003eVented Silver Viper 2-Disc Aluminum Clutch Drum for Heat Management\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-floater-plate-standard-095-fcdc-fp95\"\u003eStandard Viper Clutch Floater Plate .095 Inch Thickness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-pressure-plate-fcdc-pp\"\u003eHigh-Performance Viper Clutch Pressure Plate for Superior Engagement\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-inner-thrust-bearing-fcdc-itb\"\u003eViper Inner Thrust Bearing for Clutch Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-steel-2-disc-fcdc-sd2\"\u003eSteel 2-Disc Viper Clutch Drum for Bully-Compatible Setups\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":52562712756542,"sku":"FCDC-Kit#1V","price":288.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-two-disk-clutch-1-silver-vented-fcdc-kit-1v.jpg?v=1763114682"},{"product_id":"viper-unassembled-two-disk-clutch-4-blue-fcdc-kit-4","title":"Viper FCDC-KIT#4 Unassembled 2-Disk Clutch - Solid Blue Drum - 3\/4\" Bore","description":"\u003cp\u003eDominate your next racing weekend with the Viper FCDC-KIT#4 Unassembled Two-Disk Clutch, engineered for unyielding torque and bulletproof reliability. In a sport where split-second decisions and mechanical dependability separate the champions from the pack, your drive-line components must perform flawlessly under extreme stress. Unlike a standard go kart clutch that fades or slips under heavy loads, this unassembled Viper kit allows you to custom-tune your engagement profile for maximum durability and brutal off-the-corner acceleration. Whether you are running a high-output 4-cycle gas engine or experimenting with a high-torque electric motor for go karts, this solid drum setup ensures consistent, direct power delivery without the added rotating mass of heavily vented designs.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper two-disk clutch kit ships as loose components - not bolted together and not ready to install.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClutch discs, springs, pressure plate, solid blue fixed drum with 3\/4\" bore\u003c\/li\u003e\n\u003cli\u003eDrive sprocket (driver) not included - purchase separately to match your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eBasic mechanical assembly skill recommended; a kart shop can assemble it for you\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch2\u003ePrecision Engineering for the Drive-Line\u003c\/h2\u003e\u003cp\u003eThe Viper FCDC-KIT#4 is built around the legendary FCDC-2D architecture, shipping with top-tier SMCFD8HP friction disks and a robust .095\" floater plate. This combination guarantees even wear, smooth operation, and exceptional heat management lap after lap. The striking blue aluminum solid drum not only resists heat fading but also keeps your critical clutch components neatly contained and protected from track debris. When you are wrenching in the pits, having a spare \u003ca href=\"\/products\/viper-clutch-lever-support-fcdc-ls\"\u003eViper Clutch Lever Support\u003c\/a\u003e or \u003ca href=\"\/products\/viper-clutch-floater-plate-standard-095-fcdc-fp95\"\u003eViper Clutch Floater Plate\u003c\/a\u003e on hand means a worn part never sidelines your kart mid-season - both are drop-in replacements for this exact FCDC-2D clutch architecture.\u003c\/p\u003e\u003ch2\u003eUnmatched Reliability and Track-Ready Tuning\u003c\/h2\u003e\u003cp\u003eThe true advantage of an unassembled kit lies in its limitless personalization. By adjusting the internals and the matching small pin lever support, you can optimize the engagement RPM for your specific engine's power curve. This solid drum configuration excels in shorter sprint races and heavy-duty applications where heat buildup is minimal, delivering a direct, unyielding lock-up that propels you forward with absolute authority. Viper's meticulous machining ensures the lever support pivots smoothly, minimizing parasitic drag for better fuel efficiency and relentless top-end pull.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Blue Aluminum Drum:\u003c\/strong\u003e Non-vented design provides direct, unyielding torque and protects internal components from debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Friction Disks:\u003c\/strong\u003e Includes high-performance SMCFD8HP 8-tab disks for superior grip, fade resistance, and extended wear life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Floater Plate:\u003c\/strong\u003e Features a precision-machined .095\" floater to ensure even engagement and smooth, reliable operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomizable Engagement:\u003c\/strong\u003e Unassembled format allows racers to tune spring rates and weights for precise track prep and class compliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall Pin Lever Support:\u003c\/strong\u003e Pivots smoothly to minimize mechanical drag, improving top-end pull and overall drivetrain efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/4\" Bore Compatibility:\u003c\/strong\u003e Designed to seamlessly integrate with standard 3\/4\" crankshafts (driver gear sold separately).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFade-Resistant Finish:\u003c\/strong\u003e The striking blue anodized finish resists heat fading, maintaining a professional, aggressive look in the pits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this clutch ready to run out of the box?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, the Viper FCDC-KIT#4 is an unassembled kit. This design allows you to custom-tune your engagement profile, spring rates, and weights to match your specific engine's power curve and track conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size crankshaft does this clutch fit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This kit is designed for standard 3\/4\" crankshafts. Please ensure your engine output shaft matches this specification before assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why choose a solid drum over a vented drum?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The solid blue aluminum drum provides a direct, unyielding lock-up and protects the internal friction disks from track debris. It is ideal for sprint racing and applications where heat buildup is manageable, offering superior torque delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I replace individual parts of this clutch later?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, because this is a modular FCDC-architecture clutch, you can replace individual components like friction disks, floater plates, or lever supports as they wear, extending the life of your investment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for this two-disk clutch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Regularly inspect your friction disks for wear and ensure the floater plate remains clean. Because it is an unassembled kit, you should periodically check your lever support pivots and spring tension to maintain consistent engagement performance.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-2-disc-aluminum-blue-fcdc-ad2blu\"\u003eHigh-Performance Viper 2-Disc Aluminum Clutch Drum in Blue\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-lever-support-fcdc-ls\"\u003eSilver Aluminum Viper Clutch Lever Support for Small Pin Levers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-floater-plate-standard-095-fcdc-fp95\"\u003eStandard Viper Clutch Floater Plate .095 Inch Thickness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-inner-thrust-bearing-fcdc-itb\"\u003eViper Inner Thrust Bearing for Clutch Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drive-plate-fcdc-dp\"\u003eViper Standard Clutch Drive Plate - 3\/4\" Bore - 4-Cycle\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":52562712789310,"sku":"FCDC-KIT#4","price":295.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-two-disk-clutch-4-blue-fcdc-kit-4.jpg?v=1763114683"},{"product_id":"viper-unassembled-two-disk-clutch-4-blue-with-blue-vented-drum-fcdc-kit-4-vblad","title":"Viper FCDC-2D Unassembled Two-Disk Clutch Kit #4 - Blue Vented Drum - 4-Cycle Racing","description":"\u003cp\u003eDialing in your engagement RPM is the critical difference between a holeshot and getting swallowed by the pack, which is why serious builders demand top-tier racing go kart engine parts like the Viper Unassembled Two-Disk Clutch Kit #4. Designed for 4-cycle sprint and endurance racing, this kit puts the power of custom lock-up tuning directly into your hands. By arriving unassembled, it forces you to intentionally select the springs and weights that perfectly synchronize with your specific camshaft profile and track layout.\u003c\/p\u003e\u003ch2\u003eThermal Management for the Best Engines\u003c\/h2\u003e\u003cp\u003eHeat is the ultimate enemy of clutch performance. The signature blue vented drum on this Viper assembly isn't just for aesthetics; it acts as a centrifugal fan to channel ambient air directly across the friction surfaces. This aggressive cooling strategy prevents the SMCFD8HP disks from glazing over during high-slip scenarios. When you are running the best engines in your class, you need a clutch that can handle the torque without fading. The vented design ensures that your clutch bite remains as aggressive on lap 20 as it was on the formation lap, eliminating the dreaded late-race power loss.\u003c\/p\u003e\u003ch2\u003ePrecision Tuning Beyond Kart Pedals and Belts Parts\u003c\/h2\u003e\u003cp\u003eWhile many racers spend hours adjusting kart pedals, swapping belts parts, or installing a flashy go kart steering wheel upgrade, championships are won in the driveline. The Viper Kit #4 utilizes a small pin lever support system that allows for microscopic adjustments to your engagement profile. Whether you are running high-grip asphalt compounds or searching for traction on a slick dirt oval, you can tune the lever weights to prevent wheel spin and maximize forward bite. The lightweight aluminum construction minimizes rotating mass, translating your engine's RPM into immediate straight-line speed.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlue Vented Drum:\u003c\/strong\u003e Maximizes airflow to dissipate heat and prevent friction fade during grueling endurance runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnassembled Configuration:\u003c\/strong\u003e Allows complete customization of spring rates and weights to match your exact powerband.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSMCFD8HP Friction Disks:\u003c\/strong\u003e Delivers aggressive, slip-free engagement while preventing premature glazing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall Pin Lever Support:\u003c\/strong\u003e Enables micro-adjustments for precise control over clutch lock-up timing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Aluminum Build:\u003c\/strong\u003e Reduces rotating mass for faster spool-up and immediate throttle response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFCDC-2D Architecture:\u003c\/strong\u003e Includes all necessary components for a complete, competition-ready assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent Bite:\u003c\/strong\u003e Engineered to maintain static friction levels lap after lap, regardless of track temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is this clutch kit sold unassembled?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The unassembled configuration is designed for serious racers who need to fine-tune their engagement RPM. By building the clutch yourself, you can select the specific spring rates and lever weights required to match your engine's camshaft profile and the specific traction conditions of your track.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the blue vented drum?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The vented design acts as a centrifugal fan, pulling ambient air across the friction surfaces. This is critical for preventing heat-related \"glazing\" of the SMCFD8HP disks, ensuring your clutch maintains consistent bite and performance throughout long endurance races.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this clutch for both dirt and asphalt racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. Because the kit utilizes a small pin lever support system, you can perform micro-adjustments to the lever weights. This allows you to tune the clutch for the high-grip requirements of asphalt or the traction-limited conditions of a slick dirt oval.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for the SMCFD8HP disks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e To ensure longevity, regularly inspect the friction disks for signs of glazing or excessive wear. Because this is a high-performance racing component, we recommend cleaning the friction surfaces periodically and ensuring the vented drum remains free of debris to maintain optimal airflow.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-drum-2-disc-aluminum-blue-vented-fcdc-vblad\"\u003eViper 2-Disc Vented Aluminum Clutch Drum - Blue Finish - Clone \/ LO206 Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-lever-support-fcdc-ls\"\u003eSilver Aluminum Viper Clutch Lever Support for Small Pin Levers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-pressure-plate-fcdc-pp\"\u003eHigh-Performance Viper Clutch Pressure Plate for Superior Engagement\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-floater-plate-standard-095-fcdc-fp95\"\u003eStandard Viper Clutch Floater Plate .095 Inch Thickness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/viper-clutch-inner-thrust-bearing-fcdc-itb\"\u003eViper Inner Thrust Bearing for Clutch Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":52562712887614,"sku":"FCDC-KIT#4-VBLAD","price":303.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-two-disk-clutch-4-blue-with-blue-vented-drum-fcdc-kit-4-vblad.jpg?v=1763114685"},{"product_id":"viper-unassembled-one-disk-clutch-015-fcdc-kit-015","title":"Viper Unassembled One Disk Clutch #015 - High-Performance Kart Racing Essential","description":"\u003cp\u003eUpgrade your kart's performance with the Viper Unassembled One Disk Clutch #015 in striking blue, a top-tier component designed specifically for competitive kart racing. This unassembled clutch kit provides racers with the flexibility to customize their setup, ensuring optimal power transfer and reliability on the track. Crafted from high-grade materials, the Viper #015 clutch in blue is built to withstand the intense demands of high-speed racing, delivering smooth engagement and disengagement for enhanced control and acceleration.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper one-disk clutch kit ships as loose components and is not ready to install out of the box.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes clutch disc(s), springs, pressure plate, and drum (your choice of Silver, Blue, or Red)\u003c\/li\u003e\n\u003cli\u003eDoes not include the drive sprocket (driver) - purchase separately matched to your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eBasic mechanical assembly skill recommended or have a kart shop assemble it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cp\u003eAs part of the renowned Viper Clutches lineup, this one disk clutch in eye-catching blue is perfect for drive-line components in various kart models. Whether you're a seasoned professional or an aspiring racer, the unassembled design allows for easy integration into your existing system, saving time and reducing costs associated with pre-assembled units. The kit includes all necessary parts for assembly, including the clutch disk, pressure plate, and hardware, enabling precise adjustments to suit your engine's specifications, all accented by the vibrant blue finish.\u003c\/p\u003e\u003cp\u003eKey features of the Viper Unassembled One Disk Clutch #015 in blue include its lightweight construction, which minimizes rotational mass for quicker throttle response, and the corrosion-resistant blue finish that promotes longevity even in harsh racing environments. This clutch excels in maintaining consistent performance during prolonged races, preventing slippage and overheating that can plague lesser components. Racers appreciate the Viper's reputation for innovation, with this blue model incorporating advanced friction materials that provide superior grip without excessive wear on your drivetrain.\u003c\/p\u003e\u003cp\u003eIn the world of kart racing, every component counts, and the Viper #015 clutch in blue stands out by offering a balance of durability, efficiency, and customization. It's compatible with a wide range of kart chassis and engines, making it a versatile choice for LO206, Honda, and other popular setups. Assembly is straightforward for those with basic mechanical knowledge, but professional installation is recommended to maximize benefits. This clutch not only boosts your kart's horsepower delivery but also contributes to better fuel efficiency and reduced maintenance needs over time, with the blue color adding a bold aesthetic touch.\u003c\/p\u003e\u003cp\u003eExplore the advantages of unassembled clutches like the Viper #015 in blue: they allow for personalized tuning, such as adjusting spring tension for different track conditions—firmer for tight corners or softer for straightaways. This adaptability ensures your kart performs at its peak, whether you're navigating bumpy dirt tracks or smooth asphalt circuits. Safety is paramount in racing, and this clutch's robust design helps prevent unexpected failures that could lead to accidents, while the blue variant enhances visual appeal on the grid.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-performance one disk design for seamless power delivery\u003c\/li\u003e\n\u003cli\u003eUnassembled kit for custom fit and easy installation\u003c\/li\u003e\n\u003cli\u003eCompatible with major kart engines and chassis\u003c\/li\u003e\n\u003cli\u003eLightweight and durable construction with vibrant blue finish for race-ready reliability\u003c\/li\u003e\n\u003cli\u003eIdeal for both amateur and professional kart racers\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInvesting in quality drive-line components like the Viper Unassembled One Disk Clutch #015 in blue means investing in your racing success. It's more than just a part; it's a strategic upgrade that can shave seconds off your lap times and give you the edge over competitors, with the blue option providing a custom look. Available through leading kart supply stores, this clutch is a staple in the arsenals of top teams. Don't settle for subpar performance—equip your kart with the Viper #015 in blue and experience the difference in precision and power.\u003c\/p\u003e\u003cp\u003eWith its unassembled format, the Viper clutch in blue encourages a hands-on approach to kart maintenance, fostering a deeper understanding of your machine's mechanics. This educational aspect is invaluable for young racers learning the ropes or veterans fine-tuning their setups. The clutch's modular nature also facilitates quick repairs or upgrades, keeping downtime to a minimum during race weekends. In summary, the Viper Unassembled One Disk Clutch #015 in blue represents the pinnacle of clutch technology in kart racing, combining affordability with unmatched quality and style.\u003c\/p\u003e","brand":"Viper","offers":[{"title":"Blue","offer_id":52569035342142,"sku":"FCDC-KIT#015Blue","price":246.13,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":53239553622334,"sku":"FCDC-KIT#015Red","price":246.13,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":53239553720638,"sku":"FCDC-KIT#015Silver","price":241.13,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":54419613319486,"sku":"FCDC-KIT#015Black","price":246.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-one-disk-clutch-015-fcdc-kit-015.jpg?v=1763125240"},{"product_id":"viper-unassembled-two-disk-clutch-1-silver-with-colored-drum-choose-drum-color-fcdc-kit-1-cd","title":"Viper Unassembled Two-Disk Clutch #1 Silver with Custom Colored Drum - Choose Your Color","description":"\u003cp\u003eDiscover the ultimate upgrade for your kart racing setup with the Viper Unassembled Two-Disk Clutch #1 Silver with Blue Colored Drum. Designed for precision performance in competitive karting, this clutch offers exceptional power transfer and durability, making it a favorite among racers and mechanics alike. Whether you're building a new kart or enhancing an existing one, this unassembled kit provides everything you need to achieve superior drivetrain efficiency.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper two-disk clutch kit for kart racing ships as loose components - not bolted together and not ready to install.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo clutch discs, springs, pressure plate, and custom colored drum (choose your color)\u003c\/li\u003e\n\u003cli\u003eDrive sprocket (driver) not included - purchase separately to match your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eBasic mechanical assembly skill recommended; a kart shop can assemble it for you\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cp\u003eThe Viper Unassembled Two-Disk Clutch comes ready to assemble, allowing you to customize and fine-tune it to your specific racing needs. It features a sleek silver lever support that ensures smooth operation and reliable engagement under high-stress conditions. The kit includes all standard components of the assembled FCDC-2D model, so you get the full Viper quality without the pre-assembly. Currently shipping with high-performance SMCFD8HP disks, this clutch delivers optimal friction and heat dissipation for consistent performance lap after lap.\u003c\/p\u003e\u003cp\u003eOne of the standout features is the eye-catching blue colored drum, which adds a bold, vibrant touch to your kart's appearance while aiding in quick identification during pit stops or maintenance. The blue drum is engineered to withstand the rigors of racing, resisting wear and maintaining its striking color even after intense sessions on the track, perfect for teams that want a standout look.\u003c\/p\u003e\u003cp\u003eEngineered for kart racing enthusiasts, this clutch is ideal for drive-line components in various kart classes. Its two-disk design provides better modulation and control compared to single-disk alternatives, reducing slippage and maximizing torque delivery from your engine. Assembly is straightforward, requiring basic tools and mechanical knowledge, which makes it accessible for both professional teams and hobbyist racers. Once assembled, the clutch integrates seamlessly into your kart's transmission system, contributing to faster acceleration and more responsive handling.\u003c\/p\u003e\u003cp\u003eIn the world of kart racing, every component counts toward shaving seconds off your lap times. The Viper Unassembled Two-Disk Clutch #1 with Blue Drum stands out for its balance of performance, affordability, and ease of use. It's part of Viper's renowned line of clutches and parts, trusted by racers worldwide for their reliability in sprint, endurance, and oval track events. Whether you're competing in local clubs or national championships, this clutch will help you stay ahead of the competition.\u003c\/p\u003e\u003cp\u003eTo get the most out of your Viper clutch, regular maintenance is key. The unassembled nature allows for easy inspection and replacement of parts as needed, extending the lifespan of your drivetrain. Pair it with other Viper accessories for a complete, high-performance setup. Available through our online kart supply store, this product is stocked and ready to ship to keep your racing season on track.\u003c\/p\u003e\u003cp\u003eKey benefits include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReady-to-assemble design for custom fitting\u003c\/li\u003e\n\u003cli\u003eSilver lever support for enhanced durability\u003c\/li\u003e\n\u003cli\u003eHigh-performance SMCFD8HP disks included\u003c\/li\u003e\n\u003cli\u003eStriking blue drum for style and identification\u003c\/li\u003e\n\u003cli\u003eCompatible with standard FCDC-2D specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDon't settle for less when it comes to your kart's clutch system. The Viper Unassembled Two-Disk Clutch #1 Silver with Blue Colored Drum is your go-to choice for precision engineering and racing-ready performance. Order yours today and experience the difference in your next race.\u003c\/p\u003e","brand":"Viper","offers":[{"title":"Silver","offer_id":53239555260734,"sku":"FCDC-Kit#1-CD","price":261.23,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":54419613450558,"sku":"FCDC-Kit#1-CDBlue","price":261.23,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":54419613483326,"sku":"FCDC-Kit#1-CDRed","price":261.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-two-disk-clutch-1-silver-with-colored-drum-choose-drum-color-fcdc-kit-1-cd.jpg?v=1763125240"},{"product_id":"viper-unassembled-three-disk-clutch-choose-drum-fcdc-kit-35","title":"Viper Unassembled Three-Disk Clutch Kit - Choose Your Drum for Optimal Performance","description":"\u003cp\u003eDiscover the ultimate upgrade for your kart racing setup with the Viper Unassembled Three-Disk Clutch Kit in the durable Steel variant. Designed for precision and performance, this kit provides everything you need to assemble a high-quality clutch system tailored to your racing needs. As a core component in the driveline, the Viper clutch ensures smooth power transfer, reducing slippage and maximizing acceleration on the track.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper three-disk clutch kit ships as loose components ready for your custom build.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes clutch discs, springs, pressure plate, and your choice of drum (Silver, Black, Blue or Red Aluminum, or Steel)\u003c\/li\u003e\n\u003cli\u003eDoes not include the drive sprocket (driver) - purchase separately to match your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eBasic mechanical assembly skill recommended; a kart shop can assemble it for you\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cp\u003eThe kit comes complete with all the parts of a standard FCDC-3D clutch, including pressure plates, springs, and hardware for easy assembly. You'll also receive a small pattern drum of your choice, allowing customization to fit your specific kart configuration. Currently, these kits ship with SMCFD8HP disks, known for their durability and heat resistance during intense races. The Steel drum option stands out for its exceptional strength and longevity, making it perfect for high-impact racing environments where robustness is key. Whether you're a weekend warrior or a professional racer, this unassembled design lets you build with confidence, ensuring compatibility with a wide range of kart engines and chassis.\u003c\/p\u003e\u003cp\u003eWhy choose the Viper Unassembled Three-Disk Clutch with Steel drum? In the fast-paced world of kart racing, every component counts. This clutch system is engineered to handle high RPMs and demanding conditions, providing consistent engagement and disengagement for better control. The three-disk setup offers superior torque capacity compared to single or dual-disk alternatives, and the Steel construction adds an extra layer of resilience against wear and tear. Ideal for modified engines or tracks with varying surfaces, the Steel variant ensures your clutch withstands the toughest abuse.\u003c\/p\u003e\u003cp\u003eInstallation is straightforward for those familiar with kart mechanics. Start by selecting your drum size to match your sprocket and axle setup. The included components feature precision machining for a perfect fit, minimizing vibrations and wear, with the Steel drum providing unmatched stability. Once assembled, the clutch integrates seamlessly into your driveline, enhancing overall vehicle responsiveness. Regular maintenance, such as checking disk wear and spring tension, will keep your Viper clutch performing at peak levels race after race.\u003c\/p\u003e\u003cp\u003eFor kart enthusiasts, investing in reliable driveline components like this Viper kit with Steel drum is essential. It supports categories from junior to senior classes, accommodating engines up to 125cc. The unassembled nature appeals to DIY builders who enjoy customizing their rides, while the robust Steel construction ensures longevity even under extreme use. Pair it with other Viper parts for a cohesive system that delivers championship-winning performance.\u003c\/p\u003e\u003cp\u003eExplore the versatility of this clutch in various racing scenarios. On dirt tracks, the Steel drum provides the grip needed for tight corners; on asphalt, it maintains efficiency for straight-line speed. The design also allows for easy upgrades, such as adding lightweight components for reduced rotational mass. With its reputation in the karting community, the Viper Unassembled Three-Disk Clutch Kit with Steel drum stands out as a top choice for serious racers seeking an edge in durability.\u003c\/p\u003e\u003cp\u003eIn summary, this kit embodies the Viper commitment to quality and innovation in kart racing parts, with the Steel variant offering superior toughness. By choosing this product, you're equipping your kart with a clutch that combines strength, precision, and customizability. Order yours today and experience the difference in your next race.\u003c\/p\u003e","brand":"Viper","offers":[{"title":"Steel","offer_id":52569035440446,"sku":"FCDC-KIT#35Steel","price":338.23,"currency_code":"USD","in_stock":true},{"title":"Black Aluminum","offer_id":53239551230270,"sku":"FCDC-KIT#35Black Aluminum","price":333.23,"currency_code":"USD","in_stock":true},{"title":"Blue Aluminum","offer_id":53239551263038,"sku":"FCDC-KIT#35Blue Aluminum","price":333.23,"currency_code":"USD","in_stock":true},{"title":"Red Aluminum","offer_id":53239551295806,"sku":"FCDC-KIT#35Red Aluminum","price":333.23,"currency_code":"USD","in_stock":true},{"title":"Silver Aluminum","offer_id":53239551328574,"sku":"FCDC-KIT#35Silver Aluminum","price":328.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-three-disk-clutch-choose-drum-fcdc-kit-35.jpg?v=1763125242"},{"product_id":"viper-unassembled-big-pin-6-spring-clutch-without-driver-three-disk-silver-choose-drum-type-fcdc-kit-es3","title":"Viper Unassembled Big Pin 6-Spring Three-Disk Clutch without Driver - Silver Finish, Choose Your Drum Type","description":"\u003cp\u003eDiscover the ultimate upgrade for your kart's drivetrain with the Viper Unassembled Big Pin 6-Spring Clutch without Driver (Three Disk) in a premium silver finish, featuring a durable steel drum option. Designed specifically for 3\/4\" shafts, this high-performance clutch kit delivers exceptional engagement and power transfer, making it a favorite among serious kart racers and enthusiasts seeking added toughness.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper big-pin 6-spring three-disk clutch kit ships as loose components - not bolted together or ready to install.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClutch disc(s), springs, pressure plate, and your choice of drum (Silver, Black, Blue or Red Aluminum, or Steel)\u003c\/li\u003e\n\u003cli\u003eDoes not include the drive sprocket (driver) - purchase separately to match your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eBasic mechanical assembly skill recommended; a kart shop can assemble it for you\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cp\u003eThis unassembled kit provides everything you need to build a robust three-disk clutch tailored to your racing needs. It features the innovative FCDC-BPL Big Pin Levers for enhanced durability and smooth operation, paired with FCDC-DP6 Dowels for precise alignment. Currently equipped with top-quality SMCFD8HP Disks and .095\" Floaters, this clutch ensures consistent friction and heat dissipation during intense races, with the steel drum providing extra resilience against impacts.\u003c\/p\u003e\u003cp\u003eThe heart of the kit includes FCDC-SP Standard Springs, complete with one colored retainer and five silver ones for easy identification and maintenance. You'll also receive two 6-piece Weight Kits, allowing you to fine-tune the clutch's engagement speed and torque to match your engine's output and track conditions. The silver big pin lever support adds a sleek, professional look while maintaining structural integrity under high RPMs, complemented by the robust steel drum for superior longevity.\u003c\/p\u003e\u003cp\u003eCustomization is key in kart racing, which is why this kit highlights the steel drum option to complement the silver aluminum components. The steel drum offers unmatched strength and heat resistance, ideal for aggressive driving styles or rough terrains, enhancing the overall performance without compromising on quality. Note that this kit does not include the drive sprocket, which must be ordered separately to complete your setup.\u003c\/p\u003e\u003cp\u003eEngineered for reliability, the Viper Unassembled Clutch with steel drum stands out in the competitive world of go-karting. Its three-disk configuration provides superior grip and reduced slippage, ideal for dirt tracks, asphalt circuits, or indoor racing venues. Assembling this clutch is straightforward for those with basic mechanical knowledge, but it offers pro-level results that can shave seconds off your lap times.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUnassembled for 3\/4\" shaft compatibility\u003c\/li\u003e\n\u003cli\u003eIncludes all parts for a complete three-disk assembly\u003c\/li\u003e\n\u003cli\u003eSilver big pin lever support and steel drum option\u003c\/li\u003e\n\u003cli\u003eFCDC-BPL Big Pin Levers and FCDC-DP6 Dowels included\u003c\/li\u003e\n\u003cli\u003eSMCFD8HP Disks with .095\" Floaters\u003c\/li\u003e\n\u003cli\u003eFCDC-SP Springs: one colored, five silver retainers\u003c\/li\u003e\n\u003cli\u003eTwo 6pc Weight Kits for customization\u003c\/li\u003e\n\u003cli\u003eDrive sprocket not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you're a weekend warrior or a professional racer, this Viper clutch kit with steel drum empowers you to build a drivetrain component that's as unique as your driving style. Optimize your kart's acceleration and control with this versatile, silver-finished powerhouse featuring the tough steel drum. Explore this option and get ready to dominate the track with confidence.\u003c\/p\u003e\u003cp\u003eIn the fast-paced realm of kart racing, every component counts. The Viper Unassembled Big Pin 6-Spring Clutch with steel drum exemplifies precision engineering, combining lightweight materials with heavy-duty performance. Its silver aesthetic not only looks sharp but also signifies the high standards of craftsmanship behind it, while the steel drum ensures it handles the harshest conditions. From the big pin design that prevents wear to the multi-disk setup for balanced power delivery, this kit is built to withstand the demands of competitive racing.\u003c\/p\u003e\u003cp\u003eDon't settle for stock clutches that underperform. Assemble your Viper clutch with the steel drum and feel the difference in throttle response and overall drivability. Compatible with a wide range of kart engines, it's a smart investment for long-term reliability and speed gains. Choose the steel drum option and elevate your racing experience today.\u003c\/p\u003e","brand":"Viper","offers":[{"title":"Steel","offer_id":52569035604286,"sku":"FCDC-KIT#ES3Steel","price":391.83,"currency_code":"USD","in_stock":true},{"title":"Black Aluminum","offer_id":53239551361342,"sku":"FCDC-KIT#ES3Black Aluminum","price":386.83,"currency_code":"USD","in_stock":true},{"title":"Blue Aluminum","offer_id":53239551394110,"sku":"FCDC-KIT#ES3Blue Aluminum","price":386.83,"currency_code":"USD","in_stock":true},{"title":"Red Aluminum","offer_id":53239551426878,"sku":"FCDC-KIT#ES3Red Aluminum","price":386.83,"currency_code":"USD","in_stock":true},{"title":"Silver Aluminum","offer_id":53239551492414,"sku":"FCDC-KIT#ES3Silver Aluminum","price":381.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/un-assembledclutches-viper-unassembled-big-pin-6-spring-clutch-without-driver-three-disk-silver-choose-drum-type-fcdc-ki.jpg?v=1763125244"},{"product_id":"viper-blue-two-disk-big-pin-clutch-kit-unassembled","title":"Viper Blue Two-Disk Big Pin Clutch Kit - Unassembled","description":"\u003ch2\u003eViper Unassembled Two Disk Big Pin Clutch (Blue)\u003c\/h2\u003e\n\u003cp\u003eAssemble your own custom two-disk clutch with this complete Viper kit in striking blue. Perfect for kart racers seeking precise control and durability in their drivetrain setup. This unassembled package provides all essential components for building a robust big pin clutch system, allowing you to tailor it to your specific needs.\u003c\/p\u003e\u003cdiv style=\"margin:20px 0;padding:14px 18px;background:#f7f7f9;border-left:4px solid #444;border-radius:0 6px 6px 0;\"\u003e\n\u003ch3\u003eWhat's Included \u0026amp; What You'll Need\u003c\/h3\u003e\n\u003cp\u003eThis unassembled Viper big-pin two-disk clutch kit ships as loose components (not bolted together, not ready to install out of the box).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClutch discs, springs, pressure plate, and blue drum (fixed)\u003c\/li\u003e\n\u003cli\u003eDrive sprocket (driver) not included - purchase separately matched to your chain pitch and tooth count\u003c\/li\u003e\n\u003cli\u003eBasic mechanical assembly skill recommended - a kart shop can assemble it for you\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003eKey Components Included:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePMI-134080 Levers for smooth engagement\u003c\/li\u003e\n\u003cli\u003eFCDC-DP6 Big Dowel Pins for enhanced stability\u003c\/li\u003e\n\u003cli\u003eSMCFD8HP Disk for optimal friction\u003c\/li\u003e\n\u003cli\u003e.105\" Floater with .010\" Shim for precise spacing\u003c\/li\u003e\n\u003cli\u003eFCDC-SP90S Silver Springs (standard)\u003c\/li\u003e\n\u003cli\u003eVented Blue Drum for better heat dissipation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEverything you need comes in one kit to construct a reliable two-disk clutch. Note: Picture may not be 100% accurate—verify components upon receipt. Ideal for go-kart enthusiasts building or upgrading their clutch for better performance on the track.\u003c\/p\u003e\n\u003cp\u003eThis Viper clutch design emphasizes strength with big pins and a vented drum to manage heat during intense racing. Easy to assemble with included parts, it supports seamless power delivery from engine to driveline.\u003c\/p\u003e\n\u003ch3\u003eBenefits of Building Your Own:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCustomizable setup for your kart's requirements\u003c\/li\u003e\n\u003cli\u003eHigh-quality components for longevity\u003c\/li\u003e\n\u003cli\u003eVented design reduces overheating risks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your kart's clutch system today and experience improved throttle response and engagement.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch4\u003eWhat parts are included in this Viper clutch kit?\u003c\/h4\u003e\n\u003cp\u003ePMI-134080 Levers, FCDC-DP6 Big Dowel Pins, SMCFD8HP Disk, .105\" Floater with .010\" Shim, FCDC-SP90S Silver Springs, and Vented Blue Drum.\u003c\/p\u003e\n\u003ch4\u003eIs this clutch pre-assembled?\u003c\/h4\u003e\n\u003cp\u003eNo, it comes unassembled with all pieces to build a two-disk clutch.\u003c\/p\u003e\n\u003ch4\u003eWhat springs are standard?\u003c\/h4\u003e\n\u003cp\u003eFCDC-SP90S Silver Springs.\u003c\/p\u003e\n\u003ch4\u003eIs the picture exact?\u003c\/h4\u003e\n\u003cp\u003ePicture not 100% accurate—components match description.\u003c\/p\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":53244312813886,"sku":"FCDC-KIT#4BP","price":350.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/Viper_Unassembled_Two_Disk_Big_Pin_Clutch_BLUE.jpg?v=1774898528"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/collections\/un-assembledclutches-viper-unassembled-two-disk-clutch-1-silver-fcdc-kit-1.jpg?v=1788981700","url":"https:\/\/swiftkarting.com\/collections\/viper-unassembled-two-disk-clutch-kart-parts.oembed","provider":"Swift Karting","version":"1.0","type":"link"}