Performance 2000 RPM Torque Spring for 50cc QMB139 GY6 4-stroke engine based vehicles.
Designed to provide varying pressure to the sliding variator plate for different acceleration purposes and tuning.
2000 RPM performance clutch springs for 50cc QMB139 4-stroke engines FITS MOST CHINESE SCOOTERS, ATVS, KARTS WITH
50cc QMB139 MOTORS.
FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATOR
AND MANY OTHERS