Naraku Super Transmission Kit for 50cc QMB139 engines. Kit includes: Variator, Variator Drive Face, Belt, Torque Spring Base, Clutch and Clutch Bell. 729mm belt is for long case engines with 12" rear wheel.
Roller Weight Size: 16x13mm (6g)
Variator Outer Diameter: 88mm
Clutch Drum Number of Splines: 22
Clutch Drum Spline Inner Diameter (peak to peak): 11.10mm
Sliding Torque Spring Base Outer Diameter: 118mm
Drive Face Number of Splines: 26
Drive Face Spline Inner Diameter (peak to peak): 13mm