This Shock Set provides a pair of assembled aluminum-body shock absorbers filled with high-quality silicone shock oil for a fast and efficient shock upgrade for your vehicleFeatures:High-quality anodized aluminum shock bodies - Tough molded shock caps, shock seal cartrigdes and preload adjusters - Strong 3mm stainless steel shock shafts for long-lasting durability - Tough composite shock rod ends, spring retainers and pivot balls - Smooth silicone o-rings- Supplied assembled - Ready to bolt on to your vehicle after fitting your choice of spring - Additional tuning preload spacers supplied SPECIFICATION: Length: 109mm (center to center) Internal Bore Diameter: 11mm Included Shock Oil: 500cSt Silicone Shock Oil Piston: 1.3mm x 2 hole pistonsIncludes:2 x Assembled Shock Absorbers 2 x 3mm Preload Spacer 2 x 5mm Preload Spacer 2 x 7mm Preload SpacerRequires:Springs such as #ARA330713