Final Drive Shaft For 139QMB 139QMA 49cc 50cc 195mm Gearbox Output Shaft Replacement Part For Chinese Scooters Moped Go Kart And ATV Drop-In Ready Durable 4-Stroke Upgrade With Easy Install

Drive Shaft for 139QMB/139QMA 49cc/50cc Scooters, 195mm
✔️ 195mm length, 19 splines, 26mm shaft diameter, aluminum

Designed as a drop-in upgrade and replacement for 139QMA/139QMB engines, this final drive shaft is built for Chinese scooters, mopeds, go-karts, and ATVs. It fits vehicles with a right-hand swinging arm and twin rear shocks and replaces worn or broken shafts.

✅ Long gearbox output shaft for right-side swinging arm vehicles
✅ Length: 195mm, Splines: 19, Center diameter: 26mm
✅ Smooth end diameter: 17mm, Material: aluminum
✅ Weight: 0.42kg, Model: GY6 50cc, Engine: 139QMA/139QMB
✅ Cert: ISO9001, Origin: Mainland China

💡 What is a drive shaft for 139QMB/139QMA scooters and why replace it?

A drive shaft is a handy power-transfer component that transmits engine torque to the gearbox, enabling wheel motion. - compatibility with 139QMB/139QMA and GY6 50cc engines
- restores drive power in scooters, mopeds, ATVs
- aluminum construction for durability and light weight
- ISO 9001 certified manufacturing ensures consistent quality
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