NCY Secondary Slider; 139QMB

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NCY’s high-quality secondary sliding sheave fits CSC .go MAX, Genuine RoughHouse 50 and Black Cat 50, as well as 50cc DIO, GET, and 139QMB engines.
Specifications:
Slider plate OD: 118.5mm
Funnel ID: 33.5mm, OD: 43mm, H: 32.70mm 
Includes 2 pre-installed rubber O-rings
Compatibility:
Genuine Black Cat 50
Genuine RoughHouse 50 
CSC .go MAX
139QMB-based 50cc / 80cc engines with the following engine codes:
139QMA
139QMB
1P39QMB
1P39QMA-2
YN139QMB
JJ1P39QMB
139FMA-2
BD1P39QMB
BN139QMB
147QMD
Other QMA models
Other QMB 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.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.