ReadyLift 4" SST Lift Kit for 2014–2018 GM Silverado/Sierra 1500 (2WD/4WD & Z71) — compatible with aluminum or stamped steel UCA, not for cast steel UCA

• 4-inch SST lift designed for 2014–2018 GM Silverado/Sierra 1500 4WD & Z71 models, precise fit with factory aluminum or stamped steel upper/lower control arms (not compatible with cast steel UCA).
• New ultra-strong TCT free-floating pivot bushings are self-lubricating, dramatically reducing friction for smoother steering and longer bushing life.
• Redesigned differential drop system uses machined billet circular spacers and a rugged skid plate to achieve proper axle drop without interfering with the rear electric steering rack.
• Heavy‑duty GM 2500HD‑style ball joints are incorporated into the tubular steel upper control arms for superior durability under load and aggressive driving.
• Premium TCT UCA inner bushings and washer backing spacer sleeves maximize bushing life and maintain precise alignment under load and articulation.
• Wheel and tire compatibility: supports up to 33x11.50 tires on aftermarket wheels with 5.25" backspacing; if using OE wheels with larger tires, use ReadyLIFT 1/2" billet wheel spacers or CNC spacers (10-3485) to prevent contact at full lock; Auto 4 Hi feature not recommended.
• Comprehensive kit with mounting hardware, control arms, differential drop components, spacers, and bushings; kit weight approximately 57 lbs with packaging dimensions around 18" x 8" x 15" for planning and shipping.