ITEM NAME:Performance 2K RPM Torque Clutch Spring fit for GY6 125cc 150cc Chinese Scooter Performance 2K RPM Torque Clutch Spring fit for GY6 125cc 150cc Chinese Scooter SPECIFICATIONS.(Compatible With: Fit for many 157QMJ 4 stroke engine, GY6 125cc or 150cc Chinese scooters, mopeds, ATV. RPM: 2K (2000). Torque Spring Size Clutch Spring Size Total Length: approx. 3) Well working condition.