Traxxas 4676 Spur gear, 76-tooth (48-pitch) (for models with Torque-Control slipper clutch) Optional Traxxas spur gears allow you to increase or decrease the final drive ratio and tune for different applications Tough nylon construction for high-power applications One gear per package For models with Torque-Control slipper clutch 76-tooth, 48-pitch Use Traxxas stock and hop-up replacement parts to get the most out of you Traxxas RTR vehicles This product is made from high quality materials and designed for lasting performance This is for use on RC vehicles, consult your user's manual for exact parts listings