Front Hub Bearing; CSC go., 139QMB Scooters
Front Hub Bearing; CSC go., 139QMB Scooters
$14.64
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
Front Hub Bearing: 139QMB Scooters
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
- Fits Models / Common Applications: CSC 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 CSC?
A: This SKU is listed with CSC 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 | 0.3 lbs |
|---|---|
| Dimensions | 1 × 1 × 1 in |
Smooth Rolling: High-Precision Front Hub Bearing
Restore the handling and safety of your scooter with this High-Precision Front Hub Bearing. Specifically designed for the 10mm axle systems found on Chicago Scooter Company models and 139QMB (GY50) Chinese scooters, this bearing ensures low-friction rotation and a stable front-end feel. Whether you are experiencing wheel wobble, "grinding" noises, or performing a routine front-wheel service, this OEM-spec bearing is the standard for reliable urban commuting.
Technical Performance Features
- OEM-Spec Geometry: Features exact 30mm OD / 10mm ID dimensions for a press-fit installation that matches the factory tolerances of your front hub.
- Dual-Shielded Design: Equipped with protective shields to keep road grime and moisture out of the internal raceways, significantly extending the life of the bearing.
- High-Speed Rated: Engineered to handle the RPMs and lateral loads of 10-inch and 12-inch scooter wheels at full city speeds.
- Low-Friction Performance: Reduces rolling resistance to improve fuel efficiency and provide a smoother, more predictable steering response.
Comprehensive Fitment Guide
This bearing is a direct replacement for the front wheel assembly of the following 50cc 4-stroke scooters:
| Brand / Manufacturer | Compatible Models |
|---|---|
| Chicago Scooter Co. | Go, Go. MAX |
| Chinese GY6 50cc | 139QMB / QMB139 / GY50 Engine Platforms |
| Popular Brands | TaoTao, Wolf, Ice Bear, Bintelli (50cc Models) |
Technical Specifications
- Outer Diameter: 30 mm
- Inner Diameter: 10 mm
- Thickness: 9 mm
- Bearing Type: 6000 Series (Verify size on old bearing)
Mechanic's Note: Wheel bearings should always be replaced in pairs to ensure even wear and balanced handling. When installing, never strike the inner race of the bearing; always use a Bearing Driver Tool or a socket that matches the diameter of the outer race to press the bearing into the hub. For the best results, clean the hub bore thoroughly and apply a light film of High-Temp Grease before installation.
SKU: 0600-4003
MPN: 3500136
Front Hub bearing for CSC Go or 139QMB Chinese Scooter
