Rebuild kit, oil-filled shocks (O-ring, bladder, piston, shaft guide, E-clips, shock cap, shock rod end) 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.