For Jeep Wrangler JK 4-Door 2WD/4WD 2007-2018 High-pressure nitrogen charged twin-tube shock absorber with high durability. Rubber bushings for better absorption. 18mm Chromed Hardened Piston Rod. 32mm Diameter Sintered Iron Piston. 50mm Shock Body help Heat dissipation. Precision Welding. Improve your on and off-road ride. Powder coated surface:provides superior corrosion resistance. High Tensile Strength Carbon Steel for optimal durability and fitment. Chromium-silicon cold-wound structure with high tensile strength and resilience Increased Ground Clearance – help your vehicle handle bumps and other obstacles on the road better.