ScootsUSA Select – 16X13 (5.5g) GY6-50 QMB139 49cc Chinese Scooter Motors Clutch Roller Weights Set
ScootsUSA Select – Tie-Rod Assembly Rod Threads 10mm, Ball Joint Threads 10mm Ball Joints Ctr-to-Ctr (min/max) 8 in / 9.375 in
$20.05
5 in stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
Orders placed by 1pm EST on weekdays ship the same day.
Product Details
16X13 (5.5g) GY6-50 QMB139 49cc Chinese Scooter Motors Clutch Roller Weights Set from ScootsUSA. Designed for 49cc/90cc, GY6, QMB139 engines. Fits Tomos, Chinese Scooters, Tomos Nitro, Tomos, Scooters. Roller weight tuning changes your power delivery — lighter weights improve acceleration, heavier weights favor top speed.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your vehicle before ordering.
- Engine Size: 49cc/90cc, GY6, QMB139
- Fits Models / Common Applications: Tomos, Chinese Scooters, Tomos Nitro, Tomos, Scooters
- Fitment Notes: Transmission, Roller Weights
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible vehicle. If your vehicle 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 my 49cc/90cc engine?
A: This part is listed for 49cc/90cc, GY6, QMB139 applications. Verify your engine code and the specifications above before ordering.
Q: Which models does this fit?
A: Common applications include Tomos, Chinese Scooters, Tomos Nitro, Tomos, Scooters. Other compatible models may exist — confirm by comparing photos and measurements.





