Product Details
Description
Blue Line Drive Belt (729×17.7×30); 139QMB Long Case
Key Details
- 106-35
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 Notes: Long Case
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 | 12 × 5 × 1 in |
| Size | 729×17.7×30 |
| Condition | New |
|---|
Blue Line replacement CVT drive belt for 139QMB long-case 50cc scooters — black rubber ribbed/cogged V-belt with oil- and heat-resistant, anti-static compound.
729mm length, 17.7mm width, 30° groove angle.Â
Key Features:
- 139QMB long case fitment — direct replacement CVT drive belt for 50cc scooters with 12"-14" rear wheels.
- Fine transverse inner cogs — oil & heat resistant, anti-static rubber compound
- 729mm length | 17.7mm top width | 30° groove angle
- Fits a wide range of Chinese-made 50cc scooter brands and models (see compatibility list)
- SKU: 1200-1242 | Made in China by Blue Line
- Brand: Blue Line
- SKU: 1200-1242
- Length: 729mm
- Top width: 17.7mm
- Groove angle: 30°
- Compound: Oil & heat-resistant, anti-static rubber
- Engine: 139QMB (GY6 50cc) long case
- Weight: 0.3 lbs
- Made in China
Fits 139QMB (GY6 50cc) long case engines. Compatible with many Chinese 50cc scooter brands, including Peace Sports, Tao Tao, Icebear, Jonway, Velocity, ZNEN, Wolf, Puma Cycles, Baccio, Bintelli, BMS, Fly Scooter, Schwinn, SSR Motorsports, and SunL. See model metafields for the full fitment list.





