The FOX 2.5 Performance Series smooth-body IFP HTO shock for 2011–2019 GMC Sierra 2500/3500 HD front applications (0–1" lift) uses race-proven damping to improve ride and handling. It features a 2.5" impact-extruded 6061-T6 aluminum body, internal floating piston, Hydraulic Top Out piston, application-specific valving, rebuildable internals and a 5/8" hard chrome shaft for corrosion resistance.

Fox 11-19 GMC Sierra 2500/3500 HD 0-1in Lift Front 2.5 Performance Series Smooth Body IFP HTO Shock