Rough Country 1305 2.5" Suspension Leveling Lift Kit (Factory Cast Steel Control Arm Models) Fitment: Chevrolet: 07-18 Silverado 1500 4WD/2WD; GMC: 07-17 Sierra 1500 4WD/2WD Kit contents: front: lower strut mount extensions, strut Spacers, and hardware; rear: fabricated 2-inch Lift blocks, U-bolts, and hardware Benefits: easy bolt-on installation; maintains factory ride quality; increased ground clearance; levels front with the rear of the vehicle; fabricated blocks offer longer lifespan than cast blocks Tech notes: fits models with cast Steel factory control arms only; does not fit cast aluminum/stamped Steel factory control arm models; does not fit Auto ride/Auto Leveling models Item specifics: installation time: 3-4 hours; Backspacing: factory; recommended tire size: 285/70 R17; weight: 16.05-Lbs