ReadyLIFT Suspension offers a budget-friendly lift solution for 2011-2019 Chevy and GMC 2500HD and 3500HD truck owners. The 69-3422 SST Lift Kit is a bolt-on option that raises the front of your truck by up to 3.5 inches. It includes heavy-duty tubular steel Upper Control Arms designed to match your truck's strength. The kit also features ReadyLIFT forged torsion keys for an adjustable lift while maintaining the factory ride along with CNC-machined differential drop spacers for 4WD trucks. For the rear lift it includes 2.0" cast iron rear lift blocks with longer U-bolts and hardware suitable for SRW 3500HD trucks with factory tow package rear springs or dual rear wheels. Additionally the kit provides robust tie-rod end assemblies to replace weak factory versions addressing a common GM truck issue. This comprehensive solution allows for up to a 34" tall tire and is compatible with 2011-2019 3500HD trucks with Single Rear Wheels and Factory Tow Package Leaf Springs or Dually Rear Wheels. Please note that longer front shocks are required but not included in kit 69-3411 and it's recommended to use ReadyLIFT SST3000 Performance Front Shocks designed specifically for this lift kit. Optional ReadyLIFT SST3000 Performance Rear Shocks are also available separately.