2.0 Steel ShockBody: Smooth-bore, clear coated, zinc plated, honed seamless alloy bodies.Components: Black anodized 6061-T6 billet aluminum.Shaft: 1/2" hard chrome plated heat treated alloy steel. Piston: Race-developed Linear and Digressive piston design.Seals: Redundant sealing pack system main seal, wiper seal, scraper seal.Oil: Specially formulated for ultimate performance at variable temperatures.Mounting: 1/2" spherical bearing.Maintenance: 100% racer rebuild able.