Suitable for: Traxxas TRX4, DEFENDER, BRONCO, TACTICAL UNIT, FORD, SPORT models, all RTR and KIT models. The sporty original 39T gearwheel is not suitable. Traxxas part number 8053Note Only 32 P 12 T-19 T can be installed on the engine gear (the product list includes a 13 T steel engine tooth).
eBay