NCY Secondary Sliding Sheave Assembly; GY6, Buddy 4T

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This adjustable Secondary Sliding Sheave Assembly from NCY will give your GY6 125/150cc or Buddy 4-stroke 125, 150 or 170i bike quicker takeoff and a higher top speed. By manipulating the belt contact area on the pulley, the secondary sliding sheave changes the gear ratio on the fly, thereby increasing power delivery.  Compatibility:
Genuine Buddy 125
Genuine Buddy 150
Genuine Buddy 170i
Chinese GY6 125/15cc engines
This product will also fit 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 Compatible with Honda, Compatible with 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.*Performance upgrades are considered racing parts and are not covered by warranty.