Our bolt-on, Performance Series Coil-over IFP shock is loaded with advanced technology and a long list of Features that set it apart. The precision, metal impact extruded aluminum Body increases cooling capacity and is rust resistant. The vehicle-specific upper mount includes a composite bushing that isolates noise and vibration. Locking, spring preload rings that allow easy ride height and preload adjustment retain a top quality racing coil, selected to deliver the optimal spring rate. Performance Series Coil-Over IFP shocks bolt on with no modifications and are designed to level your truck front-to-rear. Applications are available for stock and lifted trucks that re-use the stock shock. Inside is an internal Reservoir with Internal Floating Piston (IFP) mono-tube design separates the shock oil from the high-pressure, nitrogen-charged gas chamber. The IFP eliminates oil aeration allowing maximum performance from the factory-tuned, precision Valving. The easy-to-install, Performance Series 2.0 Coil-over IFP provides a comfortable on-road ride and predictable off-road handling in even the toughest conditions. Features Performance Tuned For Vehicle Specific Application, Aluminum Body Dissipates Heat Faster Than Steel, IFP Separates Oil From High-Pressure Nitrogen Gas, Black Anodized CNC Machined Aluminum Components Series Performance Travel 4.59 Front Lift Height 0-2 Body 2.0 inch Impact extruded and CNC machined 6061-T6 clear anodized aluminum one-piece Body resists rust over time Body Plating Clear-anodized for a durable finish Components Black-anodized, CNC-machined 6061-T6 billet aluminum Shaft 5/8 Inch hard chrome plated heat-treated alloy steel Piston Race-developed high-flow Piston design Valving Application specific Valving to maximize performance Seals Redundant sealing pack system main seal, wiper seal, scraper seal Bearings Large diameter, heavy-duty spherical Extended Length 21.19 Compressed Length 16.6 Top Mount TM Bottom Mount Eyelet