Traxxas 7463 rebuild kit, GTR long/xx-long shocks (X-rings, bladders, pistons, Piston nuts, shock rod ends, hollow balls) (renews 2 shocks) 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.