ReadyLIFT 4.0 SST Lift Kit for GM Silverado/Sierra 1500 4WD (2007–2013) — 4.0" Front Lift with 3.0" Rear Lift

• Front lift delivers a robust 4.0" increase using powder-coated steel strut extensions that attach directly to the factory strut, with no irreversible modifications and a 100% DOM tubular Upper Control Arm featuring OEM-style ball joints to avoid spindle alterations.
• Rock-solid wheel and tire compatibility: supports up to 33" tires on aftermarket wheels, with proven fits such as 33x11.50 on 22x9.5 wheels (5.5" backspacing) and 285/70R17 on 17x9 wheels (+0 offset); a minor trim may be needed for 295/70R17.
• Precise front-end geometry and protection: CNC-machined 6061-T6 billet aluminum differential drop brackets keep axle angles optimal, paired with a powder-coated plate steel differential skid plate for added protection.
• Rear lift and ride-preserving design: 3.0" OEM-style cast iron rear lift blocks with u-bolts to maintain correct pinion angle, plus steel rear shock extensions to preserve factory shock position and ride quality.
• Warranty and durability: backed by ReadyLIFT’s Limited Lifetime Warranty, reflecting confidence in long-term performance and durability.
• Important compatibility notes: designed for aftermarket wheels with 5.25" backspacing; if using stock wheels with larger tires, a CNC-machined billet aluminum wheel spacer (10-3485) is required; not compatible with AWD Denali or 2013 Z71 4WD trucks with Rancho front struts; for 2007–2011 Z71, precise measurements are required; not designed for off-road use.