The Fabtech 4-inch Ultimate lift system for 2011–2019 GM C/K2500HD and 3500HD uses factory front coil springs with a steel upper spacer to raise the vehicle while retaining correct caster via radius arm drop brackets. A trac bar relocation bracket recenters the axle without replacing the Pitman arm, speeding installation. Rear lift uses blocks and extended u-bolts and the kit supports 35-inch tires with inner fender trimming for street and light offroad use.
Fabtech 11-19 GM C/K2500HD/3500HD 4in Ultimate System w/Perf. Shocks