The Stryker is specifically designed for the 50cc Cobra Bikes and 4 wheelers. This fully CNC machined clutch is made from state of the art materials to provide the racer with superior performance reliability and longevity. The Gator-Grip friction discs are the latest proprietary technology capable of handling the higher temperatures created by the stall speeds of the 50cc Stock and Modified Bikes and 4 wheelers. This combination provides a clutch that is capable of transferring the torque to the rear wheel for that Hole Shot!