Suspension arm guards, front (2)/ guard spacers (2)/ hollow balls (2)/ 3X16mm BCS (8) Use 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.