Description:

This 49cc scooter crankshaft is the most popular one used by the off brand 50cc scooter manufacturers.. Overall Length: 247mm , Thread Size (tapered side): M10x11.5mm , Thread Size (spline side): M12x15mm , Bearing Outer Diameter (tapered side): 42mm , Bearing Outer Diameter (spline side): 47mm , Number of Splines: 26 , Thin Gear=17th Thick Gear=16th. This scooter Crankshaft fits most QMB139 (GY6-50), 49cc models.. E-Ton (Eton)# 813466 Direct Fit , Tomos Nitro 50 # 12191-BE2-A000Common applications include: Alta 50cc Alta-49 (Jonway) (Vin: TCB) , E-Ton 50cc Sport (ESport) (Vin: TCA).