ReadyLIFT SST Lift Kits are the best way to lift your 4WD truck equipped with rear top overload leaf springs and has the new style radius arm front suspension. Made with black e-coated steel, ReadyLIFT 3.0" Lift coil spacers will not deteriorate or decrease ride height over time and allow you to retain the use of your factory front coil spring. The best part is your 4WD truck will ride great, just like it did stock! The new 69-1331 SST Lift Kit front coil spacer designed exclusively for the new style radius arm suspension trucks provides 3" of lift which gives clearance to add up to 35" wheels and tires. NOTE: This kit will NOT fit 2012 and older model 3500 trucks with the older suspension design. This kit consists of 3.0" lift thick steel front coil spring spacers and steel rear coil spring spacers engineered to properly support the heavy duty rear coil springs. New generation polyurethane front bump stops retain your factory travel and new front shock extensions allow you to keep your new OEM shocks. To lift the rear, we include our popular 1.0" tall OEM-style cast iron rear lift blocks with new U-bolts and hardware. Cast iron rear blocks are the only safe rear block construction for heavy duty trucks. ReadyLIFT spacers are guaranteed to maintain a smooth ride without adding more pressure on the stock suspension components. Thanks to innovative engineering, ReadyLIFT kits cost thousands less than a traditional lift kit and only take about 1-2 hours to install. ReadyLIFT Lifetime Warranty Included! All ReadyLIFT products are backed by a lifetime warranty for as long as you own your vehicle and includes all necessary parts, hardware, detailed installation instructions, and two color decals.