Glixal ATMT1-166-2 GY6 50cc 55mm kick start shaft with idle gear sets for 139QMB 1P39QMB Chinese Scooter Moped ATV Go Kart Engine Kick Start Shaft Overall Length: 55mm (45mm Shaft Length) Kick Start Shaft Tooth: 20T Idle Gear Splines: 8 Please compare your part with our picture before you place the order