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SMC Products
SMC ROLLER LEVERS
SMC Roller Levers cause disc clutches to engage more effectively. Rollers located at the contact point between the lever and the pressure plate eliminate sliding friction. The lower friction reduces engine bogging. There is now more energy available for acceleration.
SMC ROLLER LEVERS - BULLY and VORTEX STYLE
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| SMC Roller Lever - Bully Style | SMC Roller Lever - Vortex Style |
SPROCKETS
SMC Clutch Sprocket Design - The clutch sprockets that kart racers use today were invented by SMC circa 15 years ago.
SMC CLUTCH SPROCKETS #35 and #219 CHAIN
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| SMC Clutch Sprockets #35 Chain 10T - 23T | SMC Clutch Sprockets #219 Chain 13T - 26T |
Clutches
SMC VORTEX CLUTCH
Vortex - the latest technology in kart racing clutches. The spring is twisted to store energy (similar to a whirlpool or vortex) in order to connect directly to the lever. The clutch responds more quickly at the onset of engine bogging consequently allowing the clutch to remain within 40 rpm of the peak torque value where maximum acceleration occurs. Engagement is very smooth.
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Vortex One Disc |
Vortex Two Disc |
NEW! Vortex |
Vortex Three Disc |
**Not sure what you need? Click here.
SMC BULLET CLUTCHS - Discontinued, Parts Still Available
SMC Bullet - traditional (1978) technology but refined for user friendliness. The compression spring is still connected to the pressure plate but re-engineered to eliminate air gap sensitivity. Shims are history. Cleaning, assembly and adjustments are easier and faster. Engine bogging is reduced by 50% (200 rpm vs 400 rpm) compared to similar clutches but still exhibits a "hard" engagement.
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| Two Disc |
SMC AXLE CLUTCH GOLD - Call for Availability of Parts & Pricing
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| Axle Gold |









