Introducing the ReadyLIFT SST Lift Kit system for 2007-2018 GM full-size SUVs, including Cadillac Escalade, Chevrolet Tahoe and Suburban, GMC Yukon, Yukon XL, and Denali 6-lug 2WD SUVs. This kit offers a 4.0" lift, achieved with tough 4.0" powder-coated steel strut extensions that attach directly to the factory strut without any modifications. It provides increased ground clearance for up to 33" tires on aftermarket wheels. Minor trimming of the inner fenderwell may be needed for 33x12.50 tires with aftermarket wheels. For 22x9.5 wheels with 5.5" backspacing, no fender modifications are required. A 17x9 +0 offset on a 285/70R17 will fit with no rubbing, but a 295/70r17 may need minor trimming. The kit includes a 100% DOM tubular upper control arm with OEM-style ball joints pre-pressed into a strong crown, retaining OEM geometry without spindle modifications. TCT polyurethane bushings are included. To lift the rear, 3.0" powder-coated steel coil spring spacers maintain the factory ride and provide a slight rake for towing or hauling. Longer rear sway bar end links and bump stop extensions ensure proper rear suspension function. Steel rear shock extensions keep the factory rear shocks in place. Please note that this kit is designed for use with aftermarket wheels. If you plan to use stock wheels and tires, a wheel spacer is required to prevent tire contact with the control arm during full locked turns. ReadyLIFT offers a billet Aluminum wheel spacer (10-3485) for factory wheels with stud pockets cast into the wheel next to the lug holes. Installation may cause rear axle shift, necessitating an adjustable rear track bar or drop bracket, and rear auto ride modifications. This kit is not compatible with rear airbag suspension and is backed by ReadyLIFT's Limited Lifetime Warranty.