Fox 2011+ GMC Sierra 2500/3500 HD 4-6in Lift Rear 2.5 Performance Series Smooth Body IFP HTO Shock

Fox is well-known for their race-proven suspension technology, and this 2.5 Performance Series shock brings that expertise to your lifted truck. If you're running a 4 to 6-inch lift on your 2011-2025 Chevrolet Silverado 2500 HD or 3500 HD, or its GMC Sierra counterpart, this rear shock is built to handle the demands of both daily driving and tougher terrain.

This shock features a 2.5-inch impact-extruded aluminum body, which is corrosion resistant thanks to its Type II clear-anodized plating. Inside, the high-flow velocity-sensitive damping adjusts to the terrain, providing a comfortable ride on the pavement and predictable handling when you head off-road. The internal floating piston (IFP) and hydraulic top-out (HTO) piston work together to manage fluid and prevent aeration, ensuring consistent performance. It's also fully rebuildable and re-tunable, meaning you can adapt it to your specific needs or refresh it for continued service.

The 5/8-inch hard chrome shaft adds durability, and the application-specific valving is tuned to maximize performance for your lifted truck. This shock is designed to fit right and work with your existing suspension setup for a lifted vehicle.