Traxxas Primary Gears T-Maxx. This is the replacement primary gear set for the Traxxas T-Maxx 4WD Radio Control Monster Truck. This gear set is installed on the primary gear shaft in the transmission. Replaces damaged or worn primary gears. Constructed of plastic.INCLUDED: One 28 tooth forward and one 22 tooth reverse gear
One 2x9.8mm steel drive pin
One 5x10x0.5mm Teflon washer
Diassembly of gearbox and installing primary gears on to primary gear shaft.