NCY Big Valve Cylinder Head (58.5mm, 2 Valve); Genuine/GY6

NCY's Big 2-Valve Cylinder head lets that cylinder on your Genuine Buddy 125/150/170i, Blur 150, or GY6 bike breathe easier. Specifications: Dimensions: 7.5"L x 7"W x 2.75"H Cylinder Head Stud Space: 54mm Valve stem: 5mm Intake Manifold Bolt-to-Bolt Space: 45mm Intake Threads: M6 Exhaust Bolt-to-Bolt Space: 45<51mm Exhaust Threads: M8 Compatibility: Genuine Buddy 150 and GY6 engines noted below. 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.