Extract more top speed and a wider, more usable rev range from your GY6 big bore build with the NCY 16x38 upgear set. This kit is a 23% upgear over the stock 13x40 gear set, shifting the power band for improved high-speed performance. Includes countershaft gear (16T) and final drive gear (38T). Compatible with 157QMJ-based 125cc, 150cc, and 169cc engines across most Chinese GY6 scooters.
NOTE: A 12-ton hydraulic press is required to remove the stock counter shaft gear and press the new NCY gear onto the counter shaft. Professional installation is strongly recommended.
Specifications:
Compatibility:
157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:
Don't see your engine listed? If the engine code includes "QM" or "FM" and is 125cc�200cc, this product is likely compatible with your vehicle.
Off-Road Use Only. This product is not intended for use on public roads. Not legal for use in California on pollution-controlled vehicles. Check local laws before installing. Performance upgrades are considered racing parts and are not covered under warranty.
