Description
16*37 Gear Set for GY6 125cc / 150cc Engines
This 16*37 gear set is designed to improve the performance of your GY6 125cc or 150cc engine. By replacing the stock 13*40 gear set, this upgrade provides a 25% increase in gear ratio. This part is one of the GY6 scooter parts that can significantly increase speed and optimize your engine's rev range.
Performance Benefits
Upgrading to this gear set allows for greater acceleration and a more efficient power band. Riders seeking to maximize their engine's potential will find this part beneficial. It's particularly suited for those running a big bore kit, offering improved usability across a wider range of speeds.
Installation Notes
Installing this gear set requires a 12-ton hydraulic press to detach the stock counter shaft gear and reattach the new gear. Proper tools are necessary to ensure a secure fit and proper functionality. Always make sure to follow safety procedures when performing engine modifications.
Specifications
- Front Counter Shaft Teeth: 16
- Rear Final Drive Gear Teeth: 37
- Inner Spline: 19
- Outer Diameter: 69mm
- Inner Diameter: 18mm
- Width: 19.6mm
Fitment
This gear set is compatible with the following 157QMJ-based engines:
- 157QMJ
- 161QMK
- 152QMI
- 1P61QMK
- YN1P57QMJ
- 1P52FMI
- 154FMI
- JJ157QMJ
- 1P57QMJ
- BN157QMJ
- BN161QMK-A
If your engine code features "QM" or "FM," this product should be compatible with your vehicle.
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 Scooter Parts · Chinese Scooter Parts · Scooter Transmission & Final Drive · Scooter Parts
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