Mini Pocket Bike / Atv Quad / Mini Dirt Bike HP Performance Clutch 47cc 49cc Fits on 47cc 49cc Pocket Bikes Engines This performance clutch is made of metallurgical which is much stronger then alloy. This clutch will perform better then the stock clutch at higher rpms. It also comes along with three performance clutch springs already attach and it is stiffer and tougher then stock. Start racing with this clutch now! Fits on the bikes as shown & Many More!