Dr. Pulley Clutch Kit for 250cc CFMoto and Kymco Scooters SPECIFICATIONS: Does Not Include Clutch Bell 50 Degree Pillow Springs Includes 1 Nut Locker Includes 3 sets of Pillow Springs and 3 sets of Clutch Springs for fine tuning COMPATIBILITY: CFMoto – V3, V5 Hammerhead – GTS 250, SS 250 Kymco – People 250, Bet & Win 250, Xciting 250, Dink 250 Chinese Honda Cloned 172mm Engines This performance Dr. Pulley HiT clutch is specifically made for CF Moto 250cc HI/LOW transmission engine. Therefore, this clutch only works for the GTS 250 / SS 250 or any other 250s on the market with hi/low. The DR. PULLEY clutch does NOT come with the outer clutch drum. Clutch Outer diameter: 150mm – for use with 153mm clutch bell. Center opening: Width – 28mm; Height – 24mm The Dr Pulley HiT clutch has high-quality Kevlar clutch pad material running the length of the clutch arms for maximum surface area engagement with the clutch bell. Additionally, the HiT clutch has a secondary mechanism that engages when your CVT system reaches a certain RPM (tunable with the included three sets of “pillow” springs). This secondary mechanism locks the clutch arms in place against the clutch bell preventing clutch slippage when under load! The result Solid clutch engagement at all times, particularly when accelerating and climbing. This clutch is designed to be tuned to your vehicle and comes with a total of six sets of springs – three clutch arm spring sets, and three pillow spring sets. **