Description
Is your 50 – 100cc 139QMB engine revving super high, but you’re not seeing faster top end speed Depending on your setup, RDLN’s performance Gear Set 17/49 could net you as much as another 7 mph.
Specifications:
- Material Type: Steel
- Requires pressing the gears off the shaft
- Total Weight: 540g
- Gear Width: 12cm
- Gear Height: 8cm
- Final Drive Gear Ratio: 2.88 (stock is normally 3.41 – 3.71), meaning less torque, but higher acceleration
NOTE: This requires pressing the gears off the shaft.
Compatibility: This product fits 50 – 100cc 139QMB engines and those engines with the following codes.
139QMB-based 50cc / 80cc engines with the following engine codes:
| 139QMA | 139QMB | 1P39QMB | 1P39QMA-2 |
| YN139QMB | JJ1P39QMB | 139FMA-2 | BD1P39QMB |
| BN139QMB | 147QMD | Other QMA models | Other QMB models |
Don’t see your engine listed If the engine code includes “QM” or “FM”, this product is compatible with your vehicle.
About RDLN: RDLN is a premier line of aftermarket performance upgrade systems and components for scooters.RDLN products are engineered to significantly improve the function, performance, and reliability of your vehicle with the ultimate goal being an optimal balance of price, power, and performance. RDLN’s extensive field-testing network ensures each product exceeds customer requirements and expectations every time.RDLN delivers full-throttle performance at uncompromised quality.
This product is intended for off-road use only.
This product is not intended for use on public roads or land.
This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.
*Performance upgrades are considered racing parts and are not covered by warranty.
