QMB139 GY6 50cc

NCY Contra Spring DIO / GY6 50

The contra spring is vital to a proper cvt tune. Anytime you change the cc, exhaust or other engine mods, you need to address your contra spring. HONDA elite, aero, GY6 50

Choose from the following

1000rpm

1500rpm

2000rpm

 

Looking for another option? Check out our S23 springs,