Description
Performance Variator Drive Face for 50cc QMB139 and GY6 Engines
This CNC machined Performance Variator Drive Face is designed specifically for the 50cc QMB139 (GY6) engine platform. It helps eliminate belt slip and improves throttle response, making it an important component for achieving better performance. As one of the GY6 50cc scooter parts, it replaces the stock cast face, which can develop grooves that inhibit speed and affect gear transitions.
CNC Machined Precision
The drive face features a precisely machined surface that ensures a flat contact area. This design minimizes friction and heat, preventing belt slip and improving overall efficiency across the RPM range. The red anodized finish not only looks good but also aids in heat dissipation, prolonging the life of the drive belt.
Compatibility and Installation Notes
This drive face is engineered to fit with the stock electric start and kick start components, as well as the factory plastic cooling fan. When replacing, it is advised to transfer the kick start gear and cooling fan from your old unit, as they are not included with this part.
Specifications
- Material: CNC machined aluminum
- Finish: Red anodized
- Spline Count: 26
Fitment
This variator drive face is compatible with the following engines:
- 139QMB
- 1P39QMB
- 139QMA
It fits various brands, including TaoTao, Wolf, Ice Bear, Bintelli, Kymco, and SYM, along with other GY6 50cc platforms.
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
Shop more: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Variators & Roller Weights · Scooter Transmission & Final Drive · Scooter Parts
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