NCY Bearing Spring Seat; 139QMB, Dio
NCY Bearing Spring Seat; 139QMB, Dio
$28.43
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 Bearing Spring Seat – 139QMB, Dio, Elite 50
Compatibility
Fits many 139QMB-based 50cc / 80cc scooter engines. Confirm measurements, connector style, and engine family before ordering.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 50cc, 80cc
- Engine Code: 139QMB
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 | 0.3 lbs |
|---|---|
| Dimensions | 1 × 1 × 1 in |
Eliminate torque spring bind in your CVT with the NCY Bearing Spring Seat. Standard spring seats allow the torque spring to twist against the clutch pulleys, causing inconsistent shifting and dead spots in acceleration. This NCY upgrade uses a ball-bearing track so the spring rotates freely — smoother back-shifting, reduced friction, and snappier throttle response. Compatible with stock and aftermarket torque springs. Made in Taiwan by NCY.Â
- Design: needle/ball bearing sandwich plate
- Construction: high-tensile steel races
- Fits: 107mm or smaller clutch diameter
- Compatible with stock and aftermarket torque springs
- Weight: 0.1 lbs
- SKU: 1200-1253
- Made in Taiwan by NCY
Compatible Engines / Models:
- 139QMB / QMB139: all Chinese 50cc 4-stroke scooters (TaoTao, Wolf, etc.)
- Honda Dio / Elite 50: AF16, AF18, AF25 engines
- Kymco / SYM 50cc: ZX50, Agility 50, Fiddle 50
Mechanic's note: One of the best "secret" mods for the 139QMB engine. Makes a noticeable difference in throttle response, especially paired with a 1000 or 1500 RPM torque spring. Lightly grease the bearing with high-temp CVT grease during installation.
