Big Clutches for Big Engines

Two-stroke or four-stroke engines, SMC axle clutches handle more heat and more torque than any other kart clutch.

• Maximum possible acceleration
• Quick, simple, precise adjustments
• Extreme durability
• Limited maintenance
• High resale value
• Modern, patented technology

Axle Clutch - Instructions & Parts List

Superior Acceleration

Although an axle clutch weighs more than either the engine or jackshaft clutches, it turns so slowly that it has significantly lower inertia.  Less horsepower wasted in the clutch.  More horsepower passed to the road.

Axle clutches have a smaller speed range (engagement rpm to maximum rpm). It spools up in less time with less energy.

Axle clutches possess a huge surface area that dissipates heat quickly.  Disc fade is prevented.  Engagement rpm stays constant corner after corner, lap after lap.  

Light weight

Although the SMC axle clutch weighs approximately nine pounds, you can subtract the weight of the engine clutch, third bearing support and axle sprocket hub for a net gain of only three pounds. 

Inexpensive

Durability is outstanding.  Repairs are infrequent.  The total long term cost (or cost per race ) of an axle clutch is very small compared to any engine clutch.  Resale value is high. 

Choices

The "Gold" axle clutch is available in both sprint and road race versions.  All clutches have three discs.  Sprint clutches are designed for a maximum speed of approximately 70 mph.  Enduro clutches are designed for a maximum speed of approximately 160 mph.