GY6 50cc (139QMB) Rear Brake Cable (78")

Rear Brake Cable for GY6 50cc and 139QMB Engines

This rear brake cable suits GY6 and 139QMB scooters that use rear drum brakes. It takes the place of the factory cable and helps keep braking dependable. It falls under the GY6 50cc scooter parts range, so owners can swap it out without much trouble when the time comes. The cable measures 78" overall, which matches the length needed for a correct fit and operation.

Compatibility and Use

This cable works with a range of 50cc and 80cc engines that carry 139QMB-type engine codes, including 139QMA, 1P39QMB, and YN139QMB. It also fits 125cc, 150cc, and 169cc engines built on the 157QMJ engine codes. When your engine code includes "QM" or "FM," this part is likely to be the right match for your scooter.

When to Replace Your Brake Cable

Replace the brake cable if you notice fraying or a drop in how well the brakes respond. Checking it regularly is a simple way to keep your scooter running safely. Swapping out a worn cable can bring back strong braking and make riding safer.

Specifications

• Size: 78"
• Position: Rear
• Fits: GY6 50cc (139QMB) and 80cc engines with rear drum brakes

Fitment

Fits:

• GY6 50cc engines (139QMB-based, engine codes 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD, other QMA and QMB models), with rear drum brakes
• GY6 80cc engines (139QMB-based, same engine codes as above), with rear drum brakes
• GY6 125cc, 150cc and 169cc engines (157QMJ-based, engine codes 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, other QMJ, QMK and QMI models), with rear drum brakes

How to choose: Make sure the cable's 78" overall length matches your original rear brake cable, and confirm that your engine code contains QM or FM.

Shop more: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Brake Parts · Scooter Cables & Throttles · Scooter Parts