SSP-G QMB139 Performance Transmission Kit


LogoSSP-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.

44 in stock

SKU: 169-197 Category:


  • 1500 RPM Spring
  • Spring Inner Diameter: 49mm
  • Spring Height: 105mm
  • Roller Weight Size: 16x13mm (8g)
  • Variator Outer Diameter: 87mm
  • Clutch Drum Number of Splines: 22
  • Clutch Drum Spline Inner Diameter (peak to peak): 11.10mm
  • Sliding Clutch Plate Outer Diameter: 119mm

Additional information

Weight 4.4 lbs