NCY Gear Set (18*46); 139QMB, CSC, Wolf, 50cc
NCY Gear Set (18*46); 139QMB, CSC, Wolf, 50cc
$68.97
10 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
DESCRIPTION: NCY 139QMB upgear kit for your 50cc 4-strokes is finally here!This kit is made specifically for larger big bored engines and increases your gear ratio by 26%.This will allow you to maximize your big bore kit by increased top speed and a more usable rev range. You won't see much if any improved performance if you install these on a stock top end.For experienced tuners only.
139QMB ENGINES: upgear kit for your 50cc 4-strokes is finally here! This kit is made specifically for larger big bored engines and increases your gear ratio by 26%. This will allow you to maximize your big bore kit by increased top speed and a more usable rev range. You won't see much if any improved performance if you install these on a stock top end. For experienced tuners only.
Additional information
| Weight | 2 lbs |
|---|---|
| Dimensions | 6 × 4 × 2.1 in |
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 50cc
- Engine Code: 139QMB
- Fitment Notes: Big Bore, Performance
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: 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 | 2 lbs |
|---|---|
| Dimensions | 6 × 4 × 2.1 in |
