Upgrade your valve train with the NCY Performance Valve Spring Set, engineered for Genuine Buddy 125�170 scooters and all 2-valve GY6 QMJ/QMI/QMK cylinder heads. Made from electroplated steel, these springs deliver tighter valve control at higher RPMs compared to stock, reducing float and improving throttle response. Includes one inner and one outer spring per valve (2 of each).
Compatible Models:
Note: This product is intended for off-road/racing use only. Not legal for use on public roads or on pollution-controlled vehicles in California. Performance upgrades are not covered under warranty.
