{"title":"Raptor Flathead Rods, Bolts and Inserts","description":"\u003cp\u003eAftermarket rods, bolts, and inserts for Briggs Raptor flathead engines, including enduro-oriented lengths. Pair rod bolts with the rod type specified on each product.\u003c\/p\u003e","products":[{"product_id":"arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383","title":"ARC #6383 Pair of Rod Bolts for Stroker and Billet Clone Rods","description":"\u003cp\u003eNothing holds an engine together like quality fasteners— the ARC #6383 rod bolts, sold in pairs, measure 1.250\" to clamp stroker and billet rods firmly. Designed for flathead and clone applications, they resist the torque that unravels lesser hardware.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-grade steel for tensile strength.\u003c\/li\u003e\n\u003cli\u003e1.250\" length suits deep rod caps.\u003c\/li\u003e\n\u003cli\u003ePrevents cap walk in high-rev scenarios.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn kart racing, loose rods spell disaster; these bolts lock everything tight, maintaining compression for peak output. They enable aggressive tuning without fear, letting you extract every ounce of speed.\u003c\/p\u003e\u003cp\u003eEasy torquing during assembly saves build time. For stroker fans, they're indispensable for handling extra leverage forces.\u003c\/p\u003e\u003cp\u003eSKU: ARC6383\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why are these 1.250\" bolts specifically recommended for stroker rods?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Stroker rods often feature deeper rod caps to accommodate the increased leverage and forces of a modified stroke. The 1.250\" length ensures full thread engagement, providing the necessary clamping force to prevent cap walk and engine failure under high-RPM stress.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use these bolts on stock connecting rods?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These bolts are specifically engineered for ARC billet and stroker rods. They are designed to match the high-tensile requirements of aftermarket performance hardware and may not be compatible with the thread pitch or length requirements of stock OEM connecting rods.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I use thread locker when installing these rod bolts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While these bolts are designed to hold torque securely, it is standard practice in high-performance kart engine building to follow the specific torque specifications provided by your rod manufacturer. Always ensure the threads are clean and lightly oiled before torquing to ensure an accurate reading.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my rod bolts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e As a critical engine component, rod bolts should be inspected during every major engine teardown. If you notice any signs of thread stretching, deformation, or if the engine has experienced a significant over-rev event, they should be replaced immediately to prevent catastrophic failure.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc6573-arc-billet-clone-stroker-crank-175-stroke-arc6573\"\u003eARC Billet Clone Stroker Crank with +0.175 Inch Stroke for Enhanced Power\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-gx200-rod-insert-clone-arc6394\"\u003eARC GX200 Clone Rod Insert for Bearing Protection and Longevity\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-gx390-rod-insert-arc6391\"\u003eARC Racing GX390 Billet Rod Insert - Big Block Clone Protection - Open Class\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc6521-heavy-duty-wrist-pin-490-x-1-885-arc6521\"\u003eARC Racing 6521 Heavy Duty Wrist Pin - .490\" x 1.885\" - Modified Stroker\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc6522hd-heavy-duty-wrist-pin-490-x-2-075-arc6522\"\u003eARC Racing 6522HD Heavy Duty Wrist Pin - .490\" x 2.075\" Extended Stroker - Open Class\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562560418110,"sku":"ARC6383","price":24.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383.jpg?v=1763111860"},{"product_id":"arc-billet-rod-3-870-6348-arc3870","title":"ARC Racing Briggs 5HP Raptor Billet Connecting Rod - 3.870\" Length - Stock \/ Super Stock Class","description":"\u003cp\u003ePrecision-machined from domestic aircraft-grade 7075-T651 aluminum, this ARC Racing 3.870\" billet connecting rod delivers the ultimate bottom-end strength for your Briggs 5HP Raptor flathead engine, outperforming standard go kart racing parts under extreme RPM loads. By reducing rotating mass and eliminating the flex found in factory cast rods, this critical engine upgrade ensures your piston stroke remains perfectly aligned even when pushing past 7,000 RPM. A rigid bottom end is the foundation of a race-winning kart, ensuring that every ounce of torque transferred through your clutch assembly and go kart sprockets reaches the track without parasitic loss.\u003c\/p\u003e\u003ch2\u003eEngineered for Maximum Power Transfer to Your Go Kart Sprockets\u003c\/h2\u003e\u003cp\u003eIn competitive flathead racing, the margin between first and second place comes down to engine efficiency and reliability. The ARC 6348 Pro Series rod features a center-to-center length of 3.870\", which is exactly .005\" shorter than the stock 3.875\" length. This precise engineering lowers piston pop-up, allowing engine builders to run tighter tolerances and optimize compression ratios without risking valve-to-piston contact. When paired with lightweight wheel discs and a finely tuned chassis, this billet rod translates into explosive corner-exit acceleration.\u003c\/p\u003e\u003ch2\u003eBulletproof Reliability for Your Clutch Assembly and Drivetrain\u003c\/h2\u003e\u003cp\u003eHeat and friction are the enemies of any racing engine. This ARC billet rod features a signature forced oil dipper, engineered to scoop and drive oil directly into the crank pin under high-velocity operation. This superior lubrication prevents galling and bearing failure during long endurance mains. Whether you are building a fresh motor or upgrading a tired block, integrating this rod guarantees that your engine will survive the abuse of modern competitive racing.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications \u0026amp; Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAircraft-Grade Aluminum Construction:\u003c\/strong\u003e CNC-machined from 7075-T651 billet aluminum for unmatched tensile strength and rigidity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized 3.870\" Center-to-Center Length:\u003c\/strong\u003e Sized .005\" shorter than stock to safely lower piston pop-up and optimize deck height.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Forced Oil Dipper:\u003c\/strong\u003e Hydrodynamically designed to force lubrication directly into the crank pin journal under extreme RPMs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARP Racing Fasteners Included:\u003c\/strong\u003e Comes standard with ultra-high-tensile ARP rod bolts to prevent cap walk and catastrophic failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Honed Journals:\u003c\/strong\u003e Machined to exact micro-tolerances for perfect bearing crush and reduced rotational friction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Design:\u003c\/strong\u003e Significantly reduces reciprocating mass compared to OEM cast rods, allowing the engine to spool up faster.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass Legal Engineering:\u003c\/strong\u003e Rigorously field-tested and approved for IKF, WKA, and local stock\/super stock flathead classes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eStop relying on fragile factory internals that limit your tuning potential. By fortifying your Briggs Raptor with ARC Racing's industry-leading billet technology, you ensure your engine produces consistent, reliable horsepower lap after lap. Build your powerplant right, and leave the competition in the dust.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is this rod 3.870\" instead of the stock 3.875\" length?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 3.870\" length is .005\" shorter than stock, which is a common engine building technique used to lower piston pop-up. This allows you to run tighter tolerances and optimize your compression ratio without the risk of valve-to-piston contact at high RPMs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this connecting rod come with the necessary hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this rod includes high-tensile ARP racing rod bolts. These are essential for preventing \"cap walk\" and ensuring the rod remains secure under the extreme stress of competitive racing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this rod legal for my racing class?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This rod is designed for Briggs 5HP Raptor engines and is rigorously field-tested for IKF, WKA, and local stock\/super stock flathead classes. Always verify your specific local rulebook before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the forced oil dipper improve engine reliability?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The integrated oil dipper is hydrodynamically designed to scoop oil from the crankcase and force it directly into the crank pin journal. This ensures consistent lubrication during high-RPM operation, significantly reducing the risk of galling or bearing failure during long races.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-6350-arc3875\"\u003eARC Forced Oil Billet Rod 3.875 Inch with Scoop for Raptor Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-870-enduro-6328-arc3870e\"\u003eARC Enduro Billet Connecting Rod 3.870 Inch for Durable Kart Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-enduro-6330-arc3875e\"\u003eARC Enduro Billet Rod 3.875 Inch for Extended Kart Race Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-005-6392-5-arc6392-5\"\u003eARC 0.005 Inch Undersize Flathead Rod Insert for Kart Engine Adjustments\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562593055038,"sku":"ARC3870","price":84.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-billet-rod-3-870-6348-arc3870.jpg?v=1763112464"},{"product_id":"arc-billet-rod-3-870-enduro-6328-arc3870e","title":"ARC Enduro Billet Connecting Rod 3.870 Inch for Durable Kart Racing","description":"\u003cstrong\u003eBuilt to endure the toughest races\u003c\/strong\u003e, the ARC Billet Rod 3.870\" Enduro redefines longevity in kart engine components. Tailored for Raptor Flathead configurations, it handles extended sessions without faltering, ensuring your engine stays strong lap after lap for that crucial edge in endurance classes.\u003cp\u003eKey advantages include its reinforced billet construction, which resists fatigue far better than standard options. The 3.870-inch specification aligns flawlessly with common stroker kits, promoting efficient combustion and reduced wear on bearings. Racers report noticeable improvements in throttle response, as the rod's stability allows for aggressive gearing without risk of failure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEnduro-specific hardening process for superior heat and stress resistance.\u003c\/li\u003e\n\u003cli\u003eLightweight yet tough design minimizes rotational inertia, aiding quicker acceleration out of turns.\u003c\/li\u003e\n\u003cli\u003eCompatible with aftermarket inserts for customizable clearance tuning.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhy choose Enduro? In karting, where races can stretch hours, stock rods often crack under pressure. This version, with its advanced metallurgy, keeps oil flow optimal even at redline, preventing seizures and costly rebuilds. It's the smart pick for teams focused on consistency over raw power alone, yet it still packs the punch to shave seconds off your best times.\u003c\/p\u003e\u003cp\u003eEasy to source and install, SKU: ARC3870E fits seamlessly into your existing Briggs setup. Professionals use it to fine-tune engines for balanced performance, combining speed with the assurance of no mid-race breakdowns. Step up your game and race with confidence knowing your bottom end is fortified for the long haul.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this rod compatible with standard Briggs Flathead engines?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this 3.870-inch rod is specifically tailored for Raptor Flathead configurations. It is designed to replace stock rods that are prone to failure during long-duration endurance racing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose an Enduro-spec rod over a standard billet rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The Enduro series features advanced metallurgy and a specialized hardening process. This provides superior heat and stress resistance, ensuring optimal oil flow and structural integrity during extended, high-RPM race sessions where standard rods might fatigue or seize.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I adjust the clearance on this connecting rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this rod is compatible with aftermarket inserts, allowing you to fine-tune your bearing clearance for precise engine building and optimal performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this rod help with engine acceleration?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. The lightweight, high-strength billet design reduces rotational inertia, which helps the engine rev faster and improves throttle response when accelerating out of corners.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-005-6392-5-arc6392-5\"\u003eARC 0.005 Inch Undersize Flathead Rod Insert for Kart Engine Adjustments\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-870-6348-arc3870\"\u003eARC Racing Briggs 5HP Raptor Billet Connecting Rod - 3.870\" Length - Stock \/ Super Stock Class\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-6350-arc3875\"\u003eARC Forced Oil Billet Rod 3.875 Inch with Scoop for Raptor Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383\"\u003eARC #6383 Pair of Rod Bolts for Stroker and Billet Clone Rods\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562593153342,"sku":"ARC3870E","price":84.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-billet-rod-3-870-enduro-6328-arc3870e.jpg?v=1763112465"},{"product_id":"arc-billet-rod-3-875-6350-arc3875","title":"ARC Forced Oil Billet Rod 3.875 Inch with Scoop for Raptor Performance","description":"Precision lubrication can make or break a race—enter the ARC Billet Rod 3.875\" with its innovative scoop end for forced oil delivery. Engineered for Raptor Flathead engines, this component ensures vital parts stay cool and slick, directly contributing to sustained high speeds and fewer mechanical issues.\u003cp\u003eThe scoop design actively channels oil to critical areas, mimicking pro-level oiling systems without complex modifications. At 3.875 inches, it supports slightly longer strokes for increased displacement, yielding more torque for those uphill battles or straightaway sprints.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eAdvanced scoop geometry\u003c\/em\u003e for directed oil flow, cutting down on dry spots during aggressive maneuvers.\u003c\/li\u003e\n\u003cli\u003eBillet aluminum forging provides exceptional rigidity, preventing bending under peak loads.\u003c\/li\u003e\n\u003cli\u003eIdeal for modified Briggs engines aiming for 10-15% power gains.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eKart builders appreciate how this rod integrates effortlessly, enhancing overall engine harmony. It minimizes heat buildup, which translates to consistent performance over multiple heats. Forget the guesswork of inadequate lubing; this upgrade lets you focus on driving lines and overtakes, knowing your powerplant is protected.\u003c\/p\u003e\u003cp\u003eFrom club races to championships, SKU: ARC3875 has earned its reputation for transforming engines into reliable speed machines. Its balance of strength and efficiency means you can push harder, longer, without the fear of catastrophic failure. Invest in this rod to experience the thrill of a well-oiled, high-revving beast under your control.\u003c\/p\u003e\u003cp\u003eMaintenance is simple, with standard tooling required for swaps. Pair it with matching hardware for a bulletproof assembly that keeps you lapping faster than ever.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the scoop design on this rod important for my Raptor engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The integrated scoop is engineered to force oil into the rod bearing and onto the cylinder wall. This active lubrication reduces friction and heat buildup during high-RPM racing, preventing the dry spots that often lead to engine failure in aggressive karting applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this 3.875-inch rod compatible with stock Raptor engines?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This rod is designed for modified Raptor engines. The 3.875-inch length is intended to support a longer stroke, which increases engine displacement and torque. Ensure your crankshaft and piston setup are compatible with this length before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for this billet connecting rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While billet aluminum is exceptionally durable, you should inspect the rod for any signs of wear or fatigue after major race events. Always use high-quality assembly lube during installation and ensure your rod bolts are torqued to the manufacturer's specifications to maintain engine harmony.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this rod in a standard Clone or Predator engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this specific rod is engineered for the Briggs Raptor Flathead platform. Using it in a different engine architecture will result in improper geometry and catastrophic engine failure. Please check our catalog for specific rods designed for Clone or Predator engines.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-enduro-6330-arc3875e\"\u003eARC Enduro Billet Rod 3.875 Inch for Extended Kart Race Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-870-6348-arc3870\"\u003eARC Racing Briggs 5HP Raptor Billet Connecting Rod - 3.870\" Length - Stock \/ Super Stock Class\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-005-6392-5-arc6392-5\"\u003eARC 0.005 Inch Undersize Flathead Rod Insert for Kart Engine Adjustments\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383\"\u003eARC #6383 Pair of Rod Bolts for Stroker and Billet Clone Rods\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562593186110,"sku":"ARC3875","price":84.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-billet-rod-3-875-6350-arc3875.jpg?v=1763112466"},{"product_id":"arc-billet-rod-3-875-enduro-6330-arc3875e","title":"ARC Enduro Billet Rod 3.875 Inch for Extended Kart Race Durability","description":"\u003cp\u003eEndurance isn't just about surviving—it's about thriving under pressure. The ARC Billet Rod 3.875\" Enduro excels in Raptor Flathead Briggs engines, offering a fortified link between crank and piston that withstands the grind of long-format races while amplifying your speed potential.\u003c\/p\u003e\u003cp\u003eCrafted with enduro-grade materials, this 3.875-inch rod features enhanced fatigue resistance, ideal for tracks demanding sustained output. It reduces energy loss from flex, allowing more of your engine's grunt to hit the wheels for explosive exits and maintained momentum.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpecialized alloy blend for heat dissipation and longevity in high-mileage scenarios.\u003c\/li\u003e\n\u003cli\u003ePrecision tolerances ensure minimal play, promoting smoother operation and quicker revs.\u003c\/li\u003e\n\u003cli\u003eVersatile fit for various Raptor builds, from stock to heavily modified.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRacers targeting 24-hour events or multi-class weekends find this rod indispensable. It prevents the common pitfalls of rod stretch or seizure, keeping your kart competitive when others falter. The result? More consistent ETs and the ability to push limits without mechanical hesitation.\u003c\/p\u003e\u003cp\u003eSKU: ARC3875E simplifies upgrades for teams on tight schedules—bolt it in and hit the track with renewed vigor. Its lightweight profile aids in achieving optimal balance, contributing to agile handling alongside raw power. Choose endurance without sacrificing velocity.\u003c\/p\u003e\u003cp\u003eBacked by ARC's engineering prowess, this component has powered countless wins by focusing on what matters: reliability that fuels speed.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this 3.875-inch rod compatible with stock Raptor Flathead engines?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this rod is designed for Raptor Flathead builds. It is a versatile component that works well in both stock and heavily modified configurations, providing superior durability over factory parts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose an Enduro-grade rod over a standard billet rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The Enduro series is specifically engineered for high-mileage and long-format racing, such as 24-hour events. It features a specialized alloy blend that offers better heat dissipation and fatigue resistance, preventing rod stretch or seizure during sustained high-RPM output.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this rod require special installation procedures?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e As a precision-machined billet component, it should be installed using standard engine building practices. Ensure your crankshaft journal is clean and within tolerance, and always verify your oil clearance before final assembly to ensure smooth operation and longevity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this rod help with engine performance beyond just reliability?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. By reducing energy loss caused by rod flex, this billet rod ensures more of your engine's power is transferred directly to the wheels. Its lightweight profile also aids in quicker revs and better overall engine balance.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-6350-arc3875\"\u003eARC Forced Oil Billet Rod 3.875 Inch with Scoop for Raptor Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-870-enduro-6328-arc3870e\"\u003eARC Enduro Billet Connecting Rod 3.870 Inch for Durable Kart Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-005-6392-5-arc6392-5\"\u003eARC 0.005 Inch Undersize Flathead Rod Insert for Kart Engine Adjustments\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562593251646,"sku":"ARC3875E","price":84.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-billet-rod-3-875-enduro-6330-arc3875e.jpg?v=1763112468"},{"product_id":"arc-billet-rod-4-000-enduro-6331-arc6331","title":"ARC 4.000 Inch Enduro Billet Rod for High-Stroke Kart Engine Builds","description":"Stroker enthusiasts, take note: the ARC Billet Rod 4.000\" Enduro opens up new realms of power in your Raptor Flathead setup. By extending stroke length, it increases engine capacity without major overhauls, delivering the torque surge needed to blast out of corners and hold leads.\u003cp\u003eThis enduro variant prioritizes durability for stroked configurations, where stresses multiply. The 4.000-inch length pairs with longer pistons for volumetric efficiency gains, meaning more air and fuel burned per cycle for tangible speed improvements.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended length\u003c\/strong\u003e for stroker applications, yielding up to 20% more low-end grunt.\u003c\/li\u003e\n\u003cli\u003eReinforced big-end bearings to handle amplified forces in endurance races.\u003c\/li\u003e\n\u003cli\u003eBalanced weight distribution to maintain engine smoothness at elevated RPMs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn competitive karting, where every horsepower counts, this rod turns potential into podiums. It resists the elongation that plagues lesser parts in high-displacement builds, ensuring your investment lasts through seasons of hard racing. Expect sharper acceleration and better top-end pull, all while keeping vibrations in check.\u003c\/p\u003e\u003cp\u003eIntegrating SKU: ARC6331 into your Briggs engine is a game-changer for mechanics seeking big results from targeted mods. It's not just about size—it's about smart engineering that amplifies performance without compromising the core's integrity. Race harder, recover faster, and outpace the field with confidence.\u003c\/p\u003e\u003cp\u003eFrom dirt ovals to asphalt sprints, this rod's versatility shines, making it a favorite among tuners chasing that extra edge.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose an Enduro series rod over a standard billet rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The Enduro series is specifically engineered for high-stress, long-duration racing. It features reinforced big-end bearings and specialized material properties designed to withstand the amplified forces and heat generated in high-stroke, high-displacement engine builds, ensuring your engine doesn't fail during long races.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this 4.000\" rod work with my stock crankshaft?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This rod is designed for stroker applications. Using a 4.000\" rod typically requires a matching stroker crankshaft and a compatible piston to maintain proper deck height and compression ratios. Always verify your engine's geometry before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for this billet connecting rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While billet rods are significantly stronger than stock, they should be inspected periodically for signs of fatigue or bearing wear, especially after a full season of racing. Ensure you use high-quality assembly lube during installation and follow proper torque specifications for the rod bolts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this rod come with rod inserts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This product page is for the connecting rod itself. Depending on your specific clearance requirements, you may need to purchase compatible rod inserts separately to achieve the perfect fit for your crankshaft journal.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-4-500-enduro-63442-arc6344\"\u003eARC 4.500 Inch Enduro Billet Rod for Peak Performance Kart Stroker Kits\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-4-475-enduro-6342-arc6342\"\u003eARC Extreme 4.475 Inch Enduro Billet Rod for Maximum Kart Displacement\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-enduro-6330-arc3875e\"\u003eARC Enduro Billet Rod 3.875 Inch for Extended Kart Race Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383\"\u003eARC #6383 Pair of Rod Bolts for Stroker and Billet Clone Rods\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562593284414,"sku":"ARC6331","price":104.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-billet-rod-4-000-enduro-6331-arc6331.jpg?v=1763112469"},{"product_id":"arc-billet-rod-4-475-enduro-6342-arc6342","title":"ARC Extreme 4.475 Inch Enduro Billet Rod for Maximum Kart Displacement","description":"\u003cp\u003eFor those chasing extreme builds, the ARC Billet Rod 4.475\" Enduro stands as a pinnacle of stroker technology in Raptor Flathead engines. This elongated rod facilitates massive displacement increases, flooding cylinders with more mixture for explosive power that propels karts forward with authority.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e4.475-inch span optimized for big-bore\/stroker combos, unlocking hidden engine capacity.\u003c\/li\u003e\n\u003cli\u003eEnduro treatments include cryogenic processing for unparalleled wear resistance.\u003c\/li\u003e\n\u003cli\u003eIntegrated oiling ports to safeguard against starvation in radical setups.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe beauty lies in its ability to transform a modest Briggs into a track terror. Greater stroke means multiplied leverage on the crank, yielding torque curves that flatten out rivals in mid-range pulls—crucial for overtaking and maintaining speed through straights. Yet, its robust build ensures it endures the punishing forces of such aggressive tuning.\u003c\/p\u003e\u003cp\u003eKart teams pushing boundaries love how SKU: ARC6342 fits into custom assemblies, enhancing not just peak output but overall drivability. It reduces the need for excessive cam timing tweaks, simplifying setups while delivering lap-time drops. In endurance events, where reliability is king, this rod prevents the failures that sideline others.\u003c\/p\u003e\u003cp\u003ePicture crossing the finish line first, your engine humming steadily thanks to this component's fortitude. It's more than a part; it's the enabler of dreams in high-stakes racing. Upgrade wisely and feel the raw surge that redefines your kart's capabilities.\u003c\/p\u003e\u003cp\u003eProfessional install recommended for these lengths to ensure alignment perfection.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this rod compatible with standard stock engines?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this 4.475\" Enduro rod is specifically engineered for extreme stroker and big-bore builds. It is designed to facilitate massive displacement increases and requires a custom engine setup to accommodate the increased length and stroke.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the benefits of the cryogenic treatment on this rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The cryogenic processing significantly enhances the material's wear resistance and structural integrity. This is vital for endurance racing, where the rod must withstand the punishing, high-heat forces of aggressive, high-output engine tuning without failing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to perform any special maintenance with this rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Because this rod features integrated oiling ports to prevent starvation, it is highly reliable. However, due to the extreme nature of these builds, we recommend professional installation to ensure perfect alignment and regular inspection of your rod bearings and clearances during your standard engine maintenance intervals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this rod in a standard Briggs Raptor Flathead?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This rod is intended for \"stroker\" configurations. Installing it in a stock-stroke engine will result in incorrect deck height and likely cause piston-to-head contact. It should only be used by experienced engine builders as part of a balanced stroker assembly.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-4-500-enduro-63442-arc6344\"\u003eARC 4.500 Inch Enduro Billet Rod for Peak Performance Kart Stroker Kits\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-4-000-enduro-6331-arc6331\"\u003eARC 4.000 Inch Enduro Billet Rod for High-Stroke Kart Engine Builds\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-enduro-6330-arc3875e\"\u003eARC Enduro Billet Rod 3.875 Inch for Extended Kart Race Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383\"\u003eARC #6383 Pair of Rod Bolts for Stroker and Billet Clone Rods\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562593349950,"sku":"ARC6342","price":104.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-billet-rod-4-475-enduro-6342-arc6342.jpg?v=1763112470"},{"product_id":"arc-billet-rod-4-500-enduro-63442-arc6344","title":"ARC 4.500 Inch Enduro Billet Rod for Peak Performance Kart Stroker Kits","description":"Revolutionize your engine's output with the ARC Billet Rod 4.500\" Enduro, a cornerstone for advanced Raptor Flathead stroker projects. At this length, it maximizes crank throw, converting more combustion energy into rotational force for the kind of acceleration that leaves dust in your mirrors.\u003cp\u003eEnduro enhancements make it a fortress against the rigors of maxed-out builds, where every rev tests limits. The design incorporates stress-relief machining to distribute loads evenly, preventing hotspots that could lead to premature wear.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cu\u003eUltimate 4.500-inch\u003c\/u\u003e configuration for race-legal big-displacement classes.\u003c\/li\u003e\n\u003cli\u003eHigh-strength alloy resists elongation, vital for sustained high-RPM abuse.\u003c\/li\u003e\n\u003cli\u003eCompatible with oversized pistons for comprehensive power overhauls.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn the world of karting, where classes reward clever engineering, this rod delivers the displacement edge without sacrificing balance. It enhances volumetric efficiency, allowing cams and heads to breathe freely for broader powerbands—perfect for versatile track conditions. Racers note improved traction off the line, as the torque multiplication aids in hooking up power effectively.\u003c\/p\u003e\u003cp\u003eSKU: ARC6344 is the secret weapon in pro shops, enabling engines to punch above their weight class. It streamlines tuning by providing a stable foundation, so you spend less time wrenching and more time winning. For endurance, its oil-compatible features keep things cool during grueling sessions.\u003c\/p\u003e\u003cp\u003eEmbrace the power; this rod turns ambitious blueprints into on-track reality. It's engineered for victors who demand the best from their machinery.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this 4.500\" rod compatible with standard stock-stroke engines?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this rod is specifically designed for stroker kits. Using a 4.500\" rod in a stock-stroke engine will cause the piston to protrude significantly above the deck, leading to catastrophic engine failure. Ensure your crankshaft and piston combination are designed for this specific rod length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the benefits of the \"Enduro\" design for my kart engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The Enduro series features specialized stress-relief machining and high-strength alloys. These enhancements are engineered to handle the increased heat and mechanical loads of high-RPM, big-displacement builds, providing superior durability during long race sessions compared to standard billet rods.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to use specific rod bearings or inserts with this ARC rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, always ensure you are using the correct rod inserts compatible with your specific crankshaft journal size. Proper clearance is critical for oil film maintenance; we recommend checking your clearances with Plastigage during assembly to ensure they fall within the manufacturer's specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this rod be used in a standard Raptor Flathead engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This rod is intended for advanced Raptor Flathead stroker projects. It is a performance component for builders looking to maximize displacement and torque. If you are building a stock-class engine, please refer to our stock-length rod options.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-4-475-enduro-6342-arc6342\"\u003eARC Extreme 4.475 Inch Enduro Billet Rod for Maximum Kart Displacement\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-4-000-enduro-6331-arc6331\"\u003eARC 4.000 Inch Enduro Billet Rod for High-Stroke Kart Engine Builds\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383\"\u003eARC #6383 Pair of Rod Bolts for Stroker and Billet Clone Rods\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-005-6392-5-arc6392-5\"\u003eARC 0.005 Inch Undersize Flathead Rod Insert for Kart Engine Adjustments\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562593448254,"sku":"ARC6344","price":104.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-billet-rod-4-500-enduro-63442-arc6344.jpg?v=1763112471"},{"product_id":"arc-flathead-rod-insert-002-6392-2-arc6392-2","title":"ARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances","description":"\u003cp\u003eFine-tuning clearances is the art of unlocking hidden performance— the ARC Flathead Rod Insert (.002) masters it for Raptor engines. This undersized insert allows for exact rod journal fits, minimizing slop that robs power and causes uneven wear.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e0.002-inch undersize for engines needing tighter specs post-honing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBronze construction\u003c\/strong\u003e for excellent embeddability and oil retention.\u003c\/li\u003e\n\u003cli\u003eDirect replacement in ARC billet rods, ensuring concentric alignment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn kart racing, where engines scream at 8000+ RPM, precise inserts like this one prevent metal-on-metal contact, extending life and allowing bolder tuning. It promotes even oil distribution, cooling bearings during intense runs for consistent power delivery. The result? Smoother revs, less vibration, and the ability to hold gears longer for faster sector times.\u003c\/p\u003e\u003cp\u003eMechanics use SKU: ARC6392-2 in high-precision rebuilds, pairing it with micrometers for spot-on clearances. It's especially valuable in stroked setups where tolerances tighten. No more guessing—get the fit that turns potential DNFs into reliable finishes.\u003c\/p\u003e\u003cp\u003eSimple to install with basic tools, this insert elevates your bottom end to pro levels, making your kart feel alive and responsive.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: When should I use a 0.002-inch undersized rod insert?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This insert is designed for engines that have had their rod journals turned or honed during a rebuild. It compensates for the material removed, ensuring you maintain the correct oil clearance and prevent excessive \"slop\" that can lead to engine failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this insert compatible with all ARC rods?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This specific insert is designed for ARC Flathead\/Raptor billet rods. Always verify your specific rod model and journal size before installation to ensure proper fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I measure for the correct clearance when installing this insert?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Use a high-quality micrometer to measure your crankshaft journal diameter and a bore gauge to measure the rod with the insert installed. Aim for the manufacturer's recommended clearance specifications for your specific engine build to ensure optimal oil film thickness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse these rod inserts during a routine engine refresh?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is highly recommended to replace rod inserts during every major rebuild. Even if they appear visually intact, they are precision wear items; installing new inserts ensures the integrity of your oil clearances and protects your crankshaft.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-870-6348-arc3870\"\u003eARC Racing Briggs 5HP Raptor Billet Connecting Rod - 3.870\" Length - Stock \/ Super Stock Class\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-6350-arc3875\"\u003eARC Forced Oil Billet Rod 3.875 Inch with Scoop for Raptor Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-005-6392-5-arc6392-5\"\u003eARC 0.005 Inch Undersize Flathead Rod Insert for Kart Engine Adjustments\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-gx200-rod-insert-clone-arc6394\"\u003eARC GX200 Clone Rod Insert for Bearing Protection and Longevity\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-gx390-rod-insert-arc6391\"\u003eARC Racing GX390 Billet Rod Insert - Big Block Clone Protection - Open Class\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562593874238,"sku":"ARC6392-2","price":27.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-flathead-rod-insert-002-6392-2-arc6392-2.jpg?v=1763112479"},{"product_id":"arc-flathead-rod-insert-005-6392-5-arc6392-5","title":"ARC 0.005 Inch Undersize Flathead Rod Insert for Kart Engine Adjustments","description":"Question: What's the secret to a whisper-quiet, high-revving kart engine? Answer: The ARC Flathead Rod Insert (.005), delivering just the right undersize for demanding Raptor applications. This insert corrects journal diameters, fostering ideal lubrication films that slash drag and boost efficiency.\u003cp\u003eAt 0.005 inches under, it's suited for engines with worn cranks or aggressive honing, restoring factory-like precision while accommodating performance mods.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDurable material resists scoring, even in dirty track conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eEasy press-fit\u003c\/em\u003e installation for quick rebuilds between races.\u003c\/li\u003e\n\u003cli\u003eEnhances oil pressure dynamics for cooler, longer-lasting operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRacers benefit from its role in smoothing power pulses, which translates to better chassis feedback and predictable handling. In classes with strict rules, this insert keeps you legal while squeezing out extra MPH through refined mechanics. It prevents the binding that slows lesser setups, letting you focus on apexes and straights.\u003c\/p\u003e\u003cp\u003eSKU: ARC6392-5 is a staple in toolboxes, offering reliability without complexity. For teams chasing marginal gains, it's the tweak that compounds into victories. Install it right, and watch your engine hum with newfound vitality.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: When should I use a 0.005 inch undersize rod insert?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This insert is designed for engines with a crankshaft journal that has been turned down or worn by 0.005 inches. It restores the proper clearance between the rod and the crank, which is essential for maintaining oil pressure and preventing engine failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this insert compatible with all ARC rods?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This specific insert is designed for Flathead\/Raptor applications. Always verify your rod model and crankshaft journal diameter before installation to ensure the correct fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I install the rod insert?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These inserts feature a press-fit design for easy installation. Ensure the rod journal and the insert surface are perfectly clean and free of debris before seating the insert to ensure a proper lubrication film.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this insert help with engine performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. By correcting the journal diameter, this insert reduces drag and improves oil pressure dynamics. This leads to smoother power pulses and more efficient engine operation, which can result in better throttle response and overall reliability on the track.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-6350-arc3875\"\u003eARC Forced Oil Billet Rod 3.875 Inch with Scoop for Raptor Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-870-6348-arc3870\"\u003eARC Racing Briggs 5HP Raptor Billet Connecting Rod - 3.870\" Length - Stock \/ Super Stock Class\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-gx200-rod-insert-clone-arc6394\"\u003eARC GX200 Clone Rod Insert for Bearing Protection and Longevity\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-gx390-rod-insert-arc6391\"\u003eARC Racing GX390 Billet Rod Insert - Big Block Clone Protection - Open Class\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562593972542,"sku":"ARC6392-5","price":20.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-flathead-rod-insert-005-6392-5-arc6392-5.jpg?v=1763112480"},{"product_id":"arc-flathead-rod-insert-std-6392-arc6392","title":"ARC Standard Flathead Rod Insert for Reliable Kart Engine Maintenance","description":"\u003cp\u003eStandard doesn't mean ordinary— the ARC Flathead Rod Insert (Std.) is the gold standard for maintaining Raptor engine integrity. It provides exact-fit bearings that support flawless crank rotation, essential for harnessing full power without parasitic losses.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStandard sizing matches factory Briggs specs for drop-in convenience.\u003c\/li\u003e\n\u003cli\u003eHigh-quality bronze alloy for superior load-bearing in racing environments.\u003c\/li\u003e\n\u003cli\u003ePrevents excessive play, stabilizing the bottom end for consistent output.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn karting's fast-paced world, this insert ensures your engine delivers power predictably, lap after lap. It optimizes oil wedging for low-friction operation, which means less energy wasted as heat and more as forward thrust. Ideal for routine services or fresh assemblies, it keeps vibrations minimal for better driver control.\u003c\/p\u003e\u003cp\u003eWith SKU: ARC6392, rebuilds become routine rather than daunting. It's the reliable choice for staying competitive, allowing focus on setup and strategy over constant fixes. Experience the difference of precision engineering in every throttle blip.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the purpose of the ARC Flathead Rod Insert?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The rod insert acts as a high-quality bearing surface between the connecting rod and the crankshaft. It is designed to support smooth rotation, reduce friction, and prevent excessive play in the bottom end of your Briggs Flathead engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if I need the Standard size insert?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The Standard (Std.) insert is designed to match factory Briggs specifications. If your crankshaft journal is within factory tolerance and has not been turned or machined down, the Standard insert is the correct choice for your rebuild.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this insert for racing applications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. This insert is manufactured from a high-quality bronze alloy specifically engineered to handle the increased loads and heat found in competitive karting environments, ensuring consistent power delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is installation difficult?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These inserts are designed for drop-in convenience. However, because they are precision components, ensure your crankshaft journal is clean and free of debris before installation to maintain proper oil wedging and prevent premature wear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I use assembly lube when installing this insert?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, always use a high-quality engine assembly lube on the bearing surface during installation. This protects the insert during the initial engine start-up and helps optimize friction reduction from the very first lap.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-005-6392-5-arc6392-5\"\u003eARC 0.005 Inch Undersize Flathead Rod Insert for Kart Engine Adjustments\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-gx200-rod-insert-clone-arc6394\"\u003eARC GX200 Clone Rod Insert for Bearing Protection and Longevity\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-gx390-rod-insert-arc6391\"\u003eARC Racing GX390 Billet Rod Insert - Big Block Clone Protection - Open Class\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383\"\u003eARC #6383 Pair of Rod Bolts for Stroker and Billet Clone Rods\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562594005310,"sku":"ARC6392","price":12.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-flathead-rod-insert-std-6392-arc6392.jpg?v=1763112481"},{"product_id":"arc-rod-bolts-animal-std-flathead-hp-6381-pair-arcarb","title":"High-Performance ARC Rod Bolts Pair for Animal STD and Flathead","description":"\u003cp\u003eSecure every connection counts in kart engines— that's where these ARC rod bolts (#6381) shine for Animal STD, Flathead HP, and even Raptor-style applications. Sold as a pair, they clamp down with ARP-grade strength, preventing loosening that could derail your race strategy.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-tensile alloy resists stretch and fatigue\u003c\/li\u003e\n\u003cli\u003eDirect swap for stock #6380 bolts\u003c\/li\u003e\n\u003cli\u003ePrecision threads for torque accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eImagine pushing your engine to the limit without worrying about hardware failure; these bolts provide that peace of mind, allowing full-throttle confidence through the session. Their durable coating fights corrosion from trackside elements, extending service intervals so you spend less time in the pits and more on the podium. For organized racers, they're a simple upgrade that bolsters the entire rod assembly.\u003c\/p\u003e\u003cp\u003eCompatible across Briggs platforms, the ARCARB SKU guarantees authenticity in your aftermarket toolkit. Users love how they contribute to quieter, vibration-free runs, indirectly boosting speed by keeping power pure to the wheels. Don't overlook these fasteners—they're the unsung heroes keeping your bottom end bulletproof.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these bolts a direct replacement for my stock hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, these ARC #6381 bolts are designed as a direct swap for stock #6380 bolts, providing an immediate upgrade in strength and reliability for your Animal STD and Flathead engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I upgrade to these high-tensile rod bolts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Stock bolts can stretch or fatigue under high-RPM racing conditions. These ARC bolts feature high-tensile alloy construction to resist stretching and prevent hardware failure, ensuring your bottom end remains secure during full-throttle sessions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to use a specific torque setting when installing these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, always follow the torque specifications provided by your engine builder or the specific rod manufacturer's guidelines. These bolts are precision-machined to ensure accurate torque readings, which is critical for maintaining proper clamping force.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my rod bolts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is recommended to inspect your rod bolts during every major engine teardown. If you notice any signs of thread deformation, stretching, or corrosion, they should be replaced immediately to prevent catastrophic engine failure.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-animal-3-740-w-4908-pin-mod-6248-arc6248\"\u003eARC Billet Rod Animal Modified 3.740 Inch with .4908 Pin #6248\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-animal-3-287-mod-6249-arc3287mod\"\u003eARC Modified Billet Rod for Animal Engines 3.287 Inch #6249\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-animal-3-287-enduro-6247-arc3287e\"\u003eARC Billet Connecting Rod Animal Enduro 3.287 Inch #6247\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-animal-3-281-l-w-enduro-6245-arc3281\"\u003eARC Racing Briggs Animal Billet Connecting Rod - 3.281\" Enduro - WKA Legal\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383\"\u003eARC #6383 Pair of Rod Bolts for Stroker and Billet Clone Rods\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562594464062,"sku":"ARCARB","price":18.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-rod-bolts-animal-std-flathead-hp-6381-pair-arcarb.jpg?v=1763112484"},{"product_id":"arc-rod-bolts-for-flathead-billet-rods-6380-pair-arcrb","title":"ARC High-Strength Rod Bolts Pair for Flathead Billet Rods in Karts","description":"\u003cstrong\u003eNever underestimate the fasteners\u003c\/strong\u003e— ARC Rod Bolts for Flathead Billet Rods (#6380) come as a vital pair to lock everything in place. In Raptor engines, they endure massive forces, ensuring rods stay connected for uninterrupted power strokes.\u003cul\u003e\n\u003cli\u003eGrade 8-equivalent strength for extreme torque retention.\u003c\/li\u003e\n\u003cli\u003ePair includes everything needed for one rod assembly.\u003c\/li\u003e\n\u003cli\u003eAnti-vibration threading resists back-out during long runs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThese bolts are crucial for safety; loose ones can spell disaster mid-race. By maintaining clamp load, they allow aggressive tuning without fear, contributing to stable RPM climbs and quicker acceleration. Kart pros swear by them for their role in bulletproofing bottom ends.\u003c\/p\u003e\u003cp\u003eSKU: ARCRB installs with standard torque wrenches—torque to spec and forget worries. They're the unsung heroes enabling speed without compromise.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these bolts compatible with stock connecting rods?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, these #6380 rod bolts are specifically engineered for use with ARC Flathead Billet Rods. They are not designed for stock cast rods and should not be used as a replacement for OEM hardware.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to use thread locker during installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These bolts feature anti-vibration threading designed to resist back-out under extreme racing conditions. While they are designed to hold their torque, always ensure the threads are clean and dry before installation, and follow your specific rod's torque specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my rod bolts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e As a best practice for engine longevity, rod bolts should be inspected during every bottom-end rebuild. If you notice any signs of stretching, thread deformation, or if the engine has experienced a significant over-rev event, they should be replaced immediately to prevent catastrophic failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse these bolts after removing the rod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While these are high-strength Grade 8-equivalent bolts, it is highly recommended to replace them if they have been torqued through multiple heat cycles or if you are performing a full engine rebuild to ensure maximum clamping force and safety.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-002-6392-2-arc6392-2\"\u003eARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-flathead-rod-insert-005-6392-5-arc6392-5\"\u003eARC 0.005 Inch Undersize Flathead Rod Insert for Kart Engine Adjustments\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-870-6348-arc3870\"\u003eARC Racing Briggs 5HP Raptor Billet Connecting Rod - 3.870\" Length - Stock \/ Super Stock Class\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arc-billet-rod-3-875-6350-arc3875\"\u003eARC Forced Oil Billet Rod 3.875 Inch with Scoop for Raptor Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARC Racing","offers":[{"title":"Default Title","offer_id":52562594562366,"sku":"ARCRB","price":4.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-arc-rod-bolts-for-flathead-billet-rods-6380-pair-arcrb.jpg?v=1763112486"},{"product_id":"sri-std-rod-insert-raptor-sri","title":"Standard Rod Insert for Raptor Kart Engines - Reliable Bearing Solution","description":"\u003cp\u003eReliability starts at the core— the Std. Rod Insert for Raptor delivers just that for your Briggs Flathead. As a standard replacement, it restores proper journal fits, promoting even wear and efficient power transfer essential for competitive edging.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFactory-matched dimensions for hassle-free Briggs compatibility.\u003c\/li\u003e\n\u003cli\u003eRobust material handles daily track abuse.\u003c\/li\u003e\n\u003cli\u003eAids in maintaining oil film strength for cooler runs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis insert shines in keeping engines spinning true, minimizing noise and maximizing RPM potential. It's perfect for seasonal overhauls, ensuring your kart responds sharply without unexpected hiccups. Gain confidence knowing your bottom end is solid, allowing bolder lines and faster laps.\u003c\/p\u003e\u003cp\u003eSKU: SRI is a no-brainer for budget-conscious teams seeking quality. Easy swap means more track time, less bench work.\u003c\/p\u003e","brand":"Generic Performance","offers":[{"title":"Default Title","offer_id":52562683494718,"sku":"SRI","price":13.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/rodsboltsinserts-sri-std-rod-insert-raptor-sri.jpg?v=1763114275"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/collections\/rodsboltsinserts-arc-rod-bolts-flathead-stroker-rods-clone-billet-rod-6383-pair-arc6383.jpg?v=1788985089","url":"https:\/\/swiftkarting.com\/collections\/briggs-raptor-flathead-rods-bolts-inserts-kart.oembed","provider":"Swift Karting","version":"1.0","type":"link"}