G5 Gearbox Parts - A G5 gearbox uses 10 teeth on the small sprocket on gearbox and 22 teeth on rear sprocket mounted to the rear wheel.  The rear sprocket is the ratcheting type that allows the scooter to freewheel. 

 Notice:  If you have a Viper scooter that came with a metal front mud cover than you have a G6 gearbox and not a G5.  Please refer to G6 gearbox parts.