- Traxxas 8067X front and rear bumper mounts for the TRX-4 Sport. Also includes offset rear bumper mount. Use Traxxas stock and hop-up replacement parts to get the most out of your Traxxas 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.