High Performance Variator (FB310002) for the Honda Metropolitan, Ruckus, Elite 50 and QMB139 50cc, 4-stroke engines. This variator dissipates heat better, has in increased CVT range and has an optimized ramp design for improved acceleration! 50cc HIGH PERFORMANCE VARIATOR ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS HAS 4gm ROLLERS FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS MOST MODELS OF TAOTAO, JMSTAR, ROKETA, SUNL, JONWAY, TANK, PEACE, TAOTAO, GATOR AND MANY OTHERS SHIPS FROM SHELBY, NC J1JE1