RDLN Adjustable Sheave Clutch Pulley; 139QMB
RDLN Adjustable Sheave Clutch Pulley; 139QMB
$50.52
10 in stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
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Product Details
Description
RDLN Adjustable Sheave Clutch Pulley; 139QMB
Key Details
- riginal Parts For Scooters SKU 151-276
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 | 1.9 lbs |
|---|---|
| Dimensions | 6.5 × 6.5 × 4.5 in |
Upgrade your CVT driven pulley with the RDLN Adjustable Sheave Rear Clutch Pulley for 139QMB and GY6 50–100cc engines. Brushed aluminum sheave body with six adjustable ramp grooves — three straight ramps for quicker off-the-line takeoff and three curved ramps for higher top speed. Includes center red-sealed bearing (6901RS), HK172518RS needle bearing, torque driver collar, adapter bushing, and hex nut. Also listed as OPS SKU 151-276.
- SKU: 1200-1279
- Brand: RDLN
- Clutch Seat Outer Diameter: 118mm
- Pulley Needle Bearing: HK172518RS
- Torque Driver Bearing: 6901RS (12mm inner diameter)
- Ramp Grooves: 6 total — 3 straight (quick takeoff) + 3 curved (top speed)
- Includes: Sheave assembly, torque driver collar, adapter bushing, hex nut
| Engine Codes |
|---|
| 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD, and other QMA/QMB variants |
If your 50cc-100cc engine code contains "QM" or "FM" it is likely compatible with this pulley.
Off-road use only. Not intended for use on public roads. Not legal for use in California on pollution-controlled vehicles. Check local laws before installing.
