Shock 2.0 IFP Rear 99-On Chevy HD 4-6in Lift

The FOX Factory Shock 2.0 IFP rear shock for 1999-and-newer Chevrolet HD trucks delivers precision damping control for lifted trucks running 4 to 6 inches of suspension elevation. Engineered for heavy-duty fullsize trucks, this monotube shock combines FOX's 2.0 Performance Series tuning with a smooth aluminum body and internal floating piston design to handle the demands of lifted truck ownership—from daily driving stability to off-road terrain challenges.

The IFP (internal floating piston) architecture separates pressurized nitrogen from the oil, maintaining consistent damping force throughout the stroke and preventing aeration that degrades performance over time. This monotube design reduces heat buildup during sustained use, critical for trucks frequently navigating rough terrain or towing loads. The clear anodized aluminum body resists corrosion from road salt and moisture exposure while maintaining a professional appearance. At 5.24 lbs per unit, this rear shock is engineered to meet the weight and performance demands of HD truck platforms without compromising ride quality or handling predictability.

This shock is purpose-built for truck owners who have lifted their GM fullsize trucks and require damping control matched to increased ride height and altered suspension geometry. Whether managing highway cruising, backcountry trails, or heavy-load hauling, the 2.0 Performance Series tuning provides the response consistency that prevents bottoming, reduces body roll, and extends component lifespan. Installation is a direct bolt-on replacement for OEM shocks on 1999–2018 Chevy HD models, making it accessible to owners seeking immediate performance improvement without extensive suspension modification.