The STM Billet Primary Clutch for the Segway Villain X10 is a high-performance CVT upgrade engineered to deliver smoother engagement, stronger torque transfer, and superior durability compared to the factory clutch.

Designed using STM’s proven Rage series clutch platform, this billet primary clutch features a precision-machined aluminum construction and an upgraded two-way bearing design that improves clutch response while lowering the initial take-off ratio. This allows tighter belt deflection and smoother transmission shifting for improved overall drivetrain efficiency.

The clutch is designed with the stock offset, allowing it to work seamlessly with the factory Segway secondary clutch, making installation straightforward while still providing major performance improvements.

Each clutch includes STM’s adjustable Supertip cam arms, allowing riders to fine-tune engagement characteristics based on terrain, tire size, horsepower level, and riding style.

Whether you're running a stock Villain X10, larger tires, or a modified performance build, this clutch provides the reliability and tunability needed to optimize your CVT system.

Key Performance Benefits

• Faster throttle response
• Improved belt grip and clutch efficiency
• Smoother engagement and backshift
• Stronger billet construction for high load conditions
• Tunable cam arms for custom clutch calibration

Advanced STM Engineering

The updated two-way bearing design uses a smaller 47 mm main shaft bearing, allowing a lower initial takeoff ratio and smoother clutch engagement while maintaining durability under high torque loads.