Unlock more top speed and a more usable rev range from your GY6 engine with the NCY 15?38 Up-Gear Kit. This gear set delivers an 18% increase in final drive ratio over the stock 13?40 setup � the ideal companion for a big bore kit or any build chasing higher top-end performance. ISO 9001 certified and made in Taiwan by NCY since 1997.
Installation Note: You must reuse the stock 42-tooth counter shaft gear. A 50-ton gear press is required for installation.
Fits 157QMJ-based 125cc, 150cc, and 169cc engines with the following engine codes:
Performance Note: This product is intended for off-road use only and is not intended for use on public roads. Not legal for use in California on pollution-controlled vehicles � check local laws before installing.
California Prop 65 Warning: www.p65warnings.ca.gov
