Product Details
Description
NCY Roller Weights (18x14) - Genuine, SYM, Lance, GY6 150cc is a variable product with selectable options. Choose the correct option before adding to cart.
Product Details
NCY's Roller Weights are the best way to dial in the CVT transmission on your Genuine Buddy 125cc-170cc, Blur, or 157QMJ GY6 engine to suit your driving style. Lower your stock weight (12g-14g) with 10g or 11g for a great performance upgrade or when replacing worn out stock weights. For those of you unfamiliar with roller weights, they are an important tuning device and have a significant impact on your scooter's performance! They should be checked/changed every 1000 miles (per maintenance schedule) to keep your scooter running tops. Over time, roller weights will develop flat spots which will impair the performance of your scooter. A good indication that your rollers are worn is increasingly high revs for a given speed and/or decreased top speed. Replacing worn rollers with this set will restore and actually improve your low-end power and especially your top speed. Fuel efficiency will also improve dramatically! Specifications:1 set of 6 rollers 18x14 rollersWeights available from 8g to 13gCombining 2 sets of rollers lets you tune your transmission to suit your driving style (lighter weights = higher RPMs, heavier weights = lower RPMs)For example, using 3x 10g and 3x 11g rollers (alternating weights in variator) gives you 10.5g roller set. DANGER: Weights must be installed in an alternating pattern (120 degree angle). Otherwise, YOU WILL SEVERELY DAMAGE YOUR ENGINE! Compatibility: This product works with the bikes listed below and engines with the following engine codes. Genuine Buddy 125Genuine Buddy 150Genuine Buddy 170Genuine Blur 150Genuine Blur 220157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:157QMJ161QMK152QMI1P61QMKYN1P57QMJ1P52FMI154FMIJJ157QMJ1P57QMJBN157QMJBN161QMK-AOther QMJ, QMK, and QMI modelsDon'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.*Performance upgrades are considered racing parts and are not covered by warranty.
Ordering Notes
Use the dropdown options on this product page to select the correct version, color, size, or fitment before ordering.
Additional information
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Size | 10g, 11g, 12g, 13g, 8g, 9g |
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 125cc, 150cc, GY6
- Engine Code: 157QMJ
- Fits Models / Common Applications: Genuine Buddy and other compatible models may apply.
- Fitment Notes: Performance, CVT, Auto Transmission
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 157QMJ engine?
A: This SKU is listed as compatible with 157QMJ 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 125cc scooters?
A: This SKU is listed with 125cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Size | 10g, 11g, 12g, 13g, 8g, 9g |





