2000 - 2004 Nissan Xterra ( ALL Models ) - 4 Piece Front and Rear Shock / Strut Set Gravitywerkz Suspension's Shocks / Struts by Sensen have high-quality carbon steel rods with a hardened chrome finish and superior Japanese-made NOK seals. Backed by a LIMITED LIFETIME WARRANTY ALL Struts and Shocks are precision robotic Welded and are individually tested before leaving the factory Premium Powder-coated finish for long lasting corrosion and rust protection ISO 9001 and ISO / TS 16949 certifications exceed quality management standards. Consistent quality is rooted in a state-of-the-art manufacturing process You are not taking a risk on a product that hasnt been tried and tested. With a 27 year history of manufacturing quality shocks & struts and are used as an OEM supplier to domestic China for Volvo, Audi, and Volkswagon