SSP-G QMB139 Performance Transmission Kit

SSP-G After-Market Performance GY6 50 Transmission Kit for QMB139 engines. Please Note: If installing on a Genuine Buddy 50 or Roughhouse 50 you must reuse the stock drive face.Please see our Warranty & Returns Policy. 1500 RPM Spring Spring Inner Diameter: 49mm Spring Height: 105mm Roller Weight Size: 16x13mm (8g) Variator Outer Diameter: 89mm Clutch Drum Number of Splines: 22 Clutch Drum Spline Inner Diameter (peak to peak): 11.10mm Sliding Clutch Plate Outer Diameter: 119mm Light Weight Aluminum Drive Face