Naraku GY6 63mm Big Bore Kit

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Naraku QMB139 Super Transmission Kit

UPC 718046952565 SKU: 137-1 Category:

Naraku Super Transmission Kit for 50cc QMB139 engines. Kit includes: Variator, Variator Drive Face, Belt, Torque Spring Base, Clutch and Clutch Bell. Choose from either belt length 669mm or 788mm in the drop down menu.Please see our Warranty & Returns Policy.

Weight 99.2 oz
Dimensions 8 × 8 × 10 in

729mm, 788mm

  • 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
  • Drive Face Outer Diameter: 113.7mm

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