This pair of Traxxas Ultra Shocks (XX-long) comes with everything you need to complete one pair of rear shocks. The grey fiber composite bodies come pre-assembled and include a bottle of silicone shock oil. The X-ring technology provides the smooth and reliable response that only comes from oil-filled shocks. Traxxas Ultra Shocks are fully adjustable with the included pre-load spacers and also include seals, optional pistons, and powder coated red springs. 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.