Product Details
DESCRIPTION: The ultimate variator for your GY50 transmission! This beauty is lighter than any other variator on the market and at 89mm, is ideal for all types of riding.The specially coated roller tracks prevent debris accumulation that causes roller weights to flat spot, leading to extended roller weight life and consistently smooth transitions.*89mm Diameter* 5.29oz
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 50cc
- Engine Code: 139QMB
- Fits Models / Common Applications: Genuine and other compatible models may apply.
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Will this fit a 139QMB engine?
A: This SKU is listed as compatible with 139QMB engine-code fitment. Always compare your original part and scooter details before ordering.
Q: Will this fit a Genuine?
A: This SKU is listed with Genuine model fitment where the scooter also matches the listed engine or fitment notes.
Q: Is this for 50cc scooters?
A: This SKU is listed with 50cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 7 × 8 × 2 in |
| Condition | New |
|---|
This golden beauty from NCY is the ultimate variator for your 50cc 139QMB engine! At 89mm, it's ideal for all types of riding.
- The gold PTFE-coated aluminum-alloy housing is lighter than stock.
- Variator dimensions: ID: 20mm, OD: 89mm, H: 32.4mm
- Coated roller tracks ensure smooth transitions and keep debris from accumulating, eliminating roller weight flat spots, and extending roller weight life
- Slides are not included, but are available see: Sku 1200-1261 Dr. Pulley 16x13 Variator Slide Set: 139QMB, Dio, Ruckus
16x13 Roller weights/ sliders are not included. But are available online
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 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.
*89mm Diameter
* 5.29oz





