2001-2010 GMC Sierra 2500HD Extended Length Pro Comp Shocks 4WD 4x4 Energy Suspension high-silicon steel which has been

high-silicon steel which has been hardened and tempered to aid in spring shape retention

The IFS Pickup was manufactured using 2 different types of rear axles

2x Rear Lift Coil Spacers

and look of your off-road Ford F150

2001-2010 GMC Sierra 2500HD Extended Length Pro Comp Shocks 4WD 4x4 Energy Suspension high-silicon steel which has been2x Front ProComp Extended Shocks 2x Rear ProComp Extended Shocks Installation Instructions Supreme Suspensions is proud to carry Pro Comps upgraded shock series to replace your factory shocks when you install your lift kit. These are top of the line Nitrogen charged shocks that are engineered with performance in mind. They are a twin tube construction with a hardened piston rod vs. the factory single tube construction and contain a 10 stage velocity