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- Best Picks by Swift Karting: The Essential Pit Tools
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Collection: Drive-line Components
811 Drive-line Components - Scroll Down
Complete Driveline Systems for 4-Cycle Karting
In low-horsepower racing like LO206 and Clone, driveline efficiency is free horsepower. A binding chain, a worn sprocket, or a dragging clutch can cost you tenths of a second per lap. We stock high-performance clutches, chains, gears, and hubs designed to transfer every bit of power from your crankshaft to the rear tires.
Racing Clutches
Hilliard, Stinger, & Noram. We carry the best centrifugal clutches for 4-cycle engines, plus tuning springs and weights to dial in your engagement.
Chains & Breakers
#35 & #219 Pitch. High-tensile racing chains (Gold/Space) that resist stretching. Don't forget a Chain Breaker tool!
Gears & Sprockets
Split Sprockets & Drivers. Quick-change aluminum split gears allow you to change ratios in seconds without removing the axle.
The Big Debate: #35 vs. #219 Pitch
Most LO206 and 4-cycle racers must choose a chain size. Your clutch driver must match your rear sprocket.
- #35 Chain: The standard for US club racing. It is robust, affordable, and resists derailing on bumpy tracks. (Tooth counts are smaller, e.g., 15T Driver / 58T Rear).
- #219 Chain: Common in 2-cycle and some LO206 classes. It is lighter, runs smoother, and offers finer gear ratio adjustments. (Tooth counts are higher, e.g., 19T Driver / 74T Rear).
Chain alignment must be perfect. If your rear sprocket isn't perfectly inline with the clutch driver, you will throw chains and overheat your clutch. Use a straight edge or laser alignment tool every time you move the engine.
Gear Ratio Tuning
Changing your rear sprocket size is the easiest way to tune for a specific track.
Larger Rear Sprocket: Better acceleration (Corner exit), lower top speed.
Smaller Rear Sprocket: Higher top speed (Long straights), slower acceleration.
We recommend carrying a range of split sprockets (e.g., 58-64 for #35 chain) to adapt to track conditions.
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Genuine Buller #219 13T - 25T Driver Sprocket for Small Pattern Clutches
Regular price From $27.73 USDRegular priceSale price From $27.73 USD -
Genuine Bully Clutch Driver (#35 12T-21T) with Removable Bearing - #35 for Bully Drum / Conversion
Regular price $26.70 USDRegular priceSale price $26.70 USD -
Hilliard Inferno Needle Bearing Clutch Driver — #35 11T to 23T (bearing & race not included)
Regular price From $34.61 USDRegular priceSale price From $34.61 USD -
SMC 10t #35 Sprocket Conversion Kit for Viper-Style Kart Clutches
Regular price $90.93 USDRegular priceSale price $90.93 USD -
Bully 1" TURBO Clutch Driver - 16 to 21 Tooth Options for High-Performance Kart Racing
Regular price $39.10 USDRegular priceSale price $39.10 USD -
Bully Clutches 1" Turbo Clutch Driver - 14-Tooth #35 Chain - Sprint & Oval Racing
Regular price $43.19 USDRegular priceSale price $43.19 USD -
2-Piece Clutch Tool for Max-Torque Draggin Skin Maintenance
Regular price $200.10 USDRegular priceSale price $200.10 USD -
Precision 15T #35 Aftermarket Driver for Bully Clutches
Regular price $27.28 USDRegular priceSale price $27.28 USD -
High-Performance 13T #35 Aftermarket Driver for SMC Clutches
Regular price $27.28 USDRegular priceSale price $27.28 USD -
Aftermarket #35 11-Tooth Driver for SMC/Buller/Premier Clutches
Regular price $33.36 USDRegular priceSale price $33.36 USD -
Max-Torque Clutch Driver for 12T-22t Clutches - Select Size for Fun Kart, Clone, and Dragin Skin
Regular price From $22.57 USDRegular priceSale price From $22.57 USD -
Max-Torque #156 Clutch Driver Snap Ring - 13T+ Sprockets - Clone / Fun Kart
Regular price $4.87 USDRegular priceSale price $4.87 USD -
Precision Bully 1" Turbo Clutch Driver 15-Tooth for #35 Chain Setup
Regular price $43.19 USDRegular priceSale price $43.19 USD -
11 Tooth #40/41 Small Pattern Sprocket with Bearing for Kart Drums
Regular price $38.46 USDRegular priceSale price $38.46 USD -
10 Tooth Small Pattern #40/41 Sprocket - Fits All Small Pattern Drums
Regular price $38.46 USDRegular priceSale price $38.46 USD -
Velocity Complete Drive Bearing Race Assembly Kit
Regular price $23.68 USDRegular priceSale price $23.68 USD -
Velocity 11T #35 Two-Prong Arena Sprocket Complete Kit
Regular price $99.81 USDRegular priceSale price $99.81 USD -
Velocity Two-Prong 10T #35 Arena Sprocket Kit Small Pattern
Regular price $99.81 USDRegular priceSale price $99.81 USD -
SMC Clutches 4611 11T #35 Sprocket - Small Pattern - Kart Racing
Regular price $23.61 USDRegular priceSale price $23.61 USD -
Advanced 16T #35 Aftermarket Clutch Driver for SMC
Regular price $27.28 USDRegular priceSale price $27.28 USD -
Durable 14T #35 Clutch Driver Aftermarket for Premier Systems
Regular price $27.28 USDRegular priceSale price $27.28 USD -
Aftermarket 12T #35 Driver for SMC/Buller/Premier Clutches
Regular price $27.28 USDRegular priceSale price $27.28 USD -
WMS Tuck-N-Run Caged Roller Driver Bearing - High-Load Clutch Component - 4-Cycle Racing
Regular price $9.91 USDRegular priceSale price $9.91 USD -
Titan Mini-Cup Clutch for Kart Racing - Specify Driver Size for Optimal Performance
Regular price $256.85 USDRegular priceSale price $256.85 USD -
Premier #35 Clutch Drivers (19T-20T) - High-Performance Kart Racing Sprockets
Regular price $31.29 USDRegular priceSale price $31.29 USD -
Premier #35 Clutch Drivers (12T-18T) - High-Performance Kart Racing Essential
Regular price $31.29 USDRegular priceSale price $31.29 USD -
High-Performance Aftermarket #35 Clutch Driver for SMC, Buller, and Premier Karts - Specify Tooth Count
Regular price $24.70 USDRegular priceSale price $24.70 USD -
Double-Wound Sprocket Retaining Spiral Clip for Secure Fit
Regular price $3.48 USDRegular priceSale price $3.48 USD -
Versatile Noram 12-Tooth and Up Drive Hub for Kart Clutches
Regular price $54.46 USDRegular priceSale price $54.46 USD -
Max-Torque Clutch Driver for 19T-22T Clutches - Compatible with Fun Kart & Clone Engines
Regular price $52.53 USDRegular priceSale price $52.53 USD -
Max-Torque Clutch Driver for 16T-18T - Compatible with Fun Kart, Clone, and Dragin Skin Clutches
Regular price $52.53 USDRegular priceSale price $52.53 USD -
Max-Torque Clutch Driver for 14T-15T Clutches - Select Size for Fun Kart, Clone & Dragin Skin
Regular price $35.44 USDRegular priceSale price $35.44 USD -
Horstman X5 / Reaper Driver - Precision Chain Sprocket for Kart Racing Clutches (Specify Size)
Regular price $42.24 USDRegular priceSale price $42.24 USD -
X5 Clutch Wrench (GOLD) - Essential Tool for Horstman Maintenance - GOLD
Regular price $27.84 USDRegular priceSale price $27.84 USD -
Max-Torque Clone 11-Tooth Clutch Driver - #35 Chain - Clone/LO206 Class
Regular price $30.52 USDRegular priceSale price $30.52 USD -
Max-Torque 10-Tooth Clutch Driver for Clone Engines
Regular price $48.66 USDRegular priceSale price $48.66 USD