Naraku Heavy Duty Crankshaft 16 Tooth | 139QMB Engines Performance Brakes and Pug scooters and bikes

and Pug scooters and bikes running 139QMB (50cc 4-stroke) engines with 64mm valves

never force the light housing from the outside

In the event of a tip-over or crash

Thickness: 4mm

Original Parts For Scooters SKU 146-28

Naraku Heavy Duty Crankshaft 16 Tooth | 139QMB Engines Performance Brakes and Pug scooters and bikesThe Naraku Heavy Duty Crankshaft is a premium OEM quality replacement for 50cc 4 stroke QMB139 engines. Built to Japanese and Taiwanese OEM standards, it features heavy duty pre pressed bearings for extended service life and durability a significant step up from low cost Chinese alternatives. Matches the original crank dimensions for a direct drop in fit, and works equally well as a standard replacement or as the foundation for a Big Bore build.