The Rekluse z-Start and z-Start Pro Clutch is an automatic clutch that simply replaces your stock pressure plate. Control the bike by simply turning the throttle. The z-Start Clutch eliminates stalling, improves traction, reduces arm pump, improves starts, increases corner speed, and puts more power to the ground in the most demanding situations. Whether you're a beginning trail rider or experienced off-road competitor, you can benefit from the industry-leading z-Start Clutch. Easy to install, there is no core charge and you keep all your original parts. If you sell your bike, the z-Start clutch can be quickly uninstalled.