About this itemUse Traxxas stock and hop-up replacement parts to get the most out of your Traxxas RTR vehicles.This product is made from high quality materials and designed for long-lasting performance.This is replacement hardware for use on Traxxas vehicles; Consult your user's manual for exact parts listings.45-tooth, 48 pitchUse Traxxas stock and hop-up replacement parts to get the most out of you Traxxas RTR vehiclesThis product is made from high quality materials and designed for lasting performanceThis is for use on RC vehicles such as the Traxxas ; Consult your user's manual for exact parts listings