Vendeur: GOOFIT
Drive Belt 729-17.5-30 for GY6 50cc 139QMB Long Case Scooter
Détails du produit
Product Overview
Restore smooth acceleration and reliable CVT power transfer with this 729-17.5-30 drive belt, designed for many GY6 49cc / 50cc 139QMB and 139QMA long case scooter engines.
This belt is commonly used on Chinese scooters and mopeds with long case engines, often found on models equipped with 12-inch or 13-inch rear wheels. It helps transfer engine power from the variator to the clutch assembly, supporting smoother takeoff, better throttle response, and more consistent riding performance.
Made from fiber-reinforced rubber material, the belt is built to handle normal CVT heat, friction, and daily riding conditions. It is a practical replacement for worn, cracked, slipping, or stretched drive belts.
Important: Please check the belt number printed on your original belt before ordering. This belt fits 729-17.5-30 long case applications and does not replace shorter belts such as 669-18-30.
Product Compatibility
| Component | Details |
|---|---|
| Engine Type | GY6 49cc / 50cc 4-Stroke |
| Engine Codes | 139QMB, 139QMA |
| Case Type | Long Case Only |
| Belt Size | 729-17.5-30 |
| Common Wheel Size | Often used on 12" / 13" rear wheel scooters |
| Vehicle Types | Scooters, mopeds, select small ATVs and go-karts |
| Common Brands | TaoTao, Wolf, Ice Bear, Peace Sports, Bintelli, Roketa, and similar Chinese scooter brands |
Fitment Note:
GY6 50cc scooters can use different belt sizes depending on the engine case length and wheel setup. Always compare your original belt size before ordering.
Specifications
| Specification | Details |
|---|---|
| Product Type | CVT Drive Belt |
| Belt Model | 729-17.5-30 |
| Length | 729 mm |
| Width | 17.5 mm |
| Angle | 30° |
| Material | Fiber-Reinforced Rubber |
| Engine Compatibility | GY6 49cc / 50cc 139QMB / 139QMA |
| Case Compatibility | Long Case |
| Installation Position | CVT Transmission / Variator to Clutch |
Key Features
Designed for GY6 50cc Long Case Engines
The 729mm belt length is commonly used on GY6 50cc long case scooter engines, especially models with larger rear wheel setups.
Direct Replacement Size 729-17.5-30
Built to replace worn or damaged 729-17.5-30 CVT belts. Always match this number with the size printed on your old belt.
Fiber-Reinforced Rubber Construction
Made with reinforced rubber material to help resist stretching, cracking, and wear during normal scooter operation.
Smooth CVT Power Transfer
Helps maintain consistent contact between the variator and clutch pulleys for smoother acceleration and better riding response.
Suitable for Daily Scooter Maintenance
A practical replacement part for scooters with belt slip, poor acceleration, vibration, hard takeoff, or visible belt wear.
