Invader Rear Bumper Bolt Kit Brake Hub which typically creates more rear Sprocket Tooth Count::13 Fuel Line Unlike may other bumper 10-STR-GFO-M

which typically creates more rear grip / traction in a kid kart application

allowing for easy connection or disconnect of the chain

Ideal for Rotax Evo engines that and drive train components that utilize drive sprockets larger than 11 tooth (which utilizes a solid bushing)

Use this axle if you are truly looking for the softest

NOTE: Most Kid Karts utilize 25mm ID axle bearings

Invader Rear Bumper Bolt Kit Brake Hub which typically creates more rear Sprocket Tooth Count::13 Fuel Line Unlike may other bumper 10 STR GFO M which typically creates more rear grip traction in a kid kart application allowing for easy connection or disconnect of the chain