Made from high-quality CNC aluminum alloy, strong and sturdy The starter shaft kit is compatible with GY6 49CC 50CC Scooter Moped 139QMB P139QMB 4 stroke engine. Package Included a kick start lever shaft idle gear spring kit: starter gear, start clutch, kick pedal kit, idle gear, spring Easy to install: It is convenient and directly replaces the old or damaged for your scooters. Note: This kick start lever & gear assembly does not suitable for 80CC Scooter Moped