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QMB139 50cc Performance Transmission Kit
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In stock
Part Number: BT169-187
Manufacturer: Hoca
Manufacturer Part No: 169-197
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After-Market Performance Transmission Kit by Hoca for QMB139 / GY6 50cc 4-stroke engines.

- 1000 RPM Spring
- Spring Inner Diameter: 49mm
- Spring Height: 107mm
- Roller Weight Size: 16x13mm - 9g
- 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
- Drive Plate Number of Splines: 26
- Drive Plate Spline Inner Diameter (peak to peak): 13mm
- Drive Plate Outer Diameter: 113mm
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MSRP: $35.00
Our Price: $19.97
You Save: $15.03
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