NCY Gear Set (15*38); GY6 150cc

NCY 15*38 upgear kit for 125/150cc GY6 engines lets you get the most out of your big bore kit, with increased top speed and a more usable rev range. This set provides an 18% increase in up gear ratio over a stock 13*40 gear set. NOTE: When installing, you must reuse the stock 42-tooth counter shaft gear. Additionally, a 50-ton gear press required for install. Specifications: Front Counter Shaft Teeth: 15 / Spline L: 24mm / OD: 31.1mm / Overall L: 60mm Gear Press-On Area L: 12.08mm x OD: 19.08mm / Ends L: 9<10.5mm x OD: 15mm Rear Final Drive Gear Teeth: 38 / Inner Spline: 19 OD: 71.2mm / ID: 18mm / W: 20mm Compatibility: 157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes: 157QMJ 161QMK 152QMI 1P61QMK YN1P57QMJ 1P52FMI 154FMI JJ157QMJ 1P57QMJ BN157QMJ BN161QMK-A Other QMJ, QMK, and QMI models Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle. About NCY: NCY is the aftermarket performance parts leader for most popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered scooters. Made in Taiwan with strict quality standards since 1997, NCY is ISO 9001 certified. Made in Taiwan. This product is intended for off-road use only. This product is not intended for use on public roads or land. This product is 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 by warranty.