NCY Performance Valve Spring Set | Genuine & GY6 125-170cc
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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 titanium, 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).
- Inner spring — ID: 12.25mm | Length: 32.5mm | Width: 16.09mm | Wire thickness: 1.96mm
- Outer spring — ID: 17.20mm | Length: 35.6mm | Width: 22.5mm | Wire thickness: 2.9mm
- Fits 2-valve cylinder heads on GY6 QMJ157, QMI152, QMK161, and related engine codes
- Compatible engine codes: 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, and other QMJ/QMK/QMI variants
- Made in Taiwan | ISO 9001 certified
Compatible Models:
- Genuine Buddy 125, Buddy 150, Buddy 170
- GY6 125cc / 150cc / 169cc engines with QMJ, QMI, or QMK engine codes
- Wide range of Chinese GY6-powered scooters (Wolf, Tao Tao, Jonway, ZNEN, Bintelli, SSR, and more)
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. California Prop 65 Warning: www.p65warnings.ca.gov
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Returns & warranty
Please verify fitment and part number before ordering. Contact Thrifty Scooters promptly if an item arrives damaged or incorrect.