ReadyLIFT 6 Inch Big Lift Kit - With SST - Not for use on Trail Boss, AT4, AT4X, ZR2, Diesel or Denali models.

44-3965 - 6"F-5"R Big Lift Kit - GM Silverado/Sierra 1500 4WD Note: Not for use on Trail Boss or AT4 / AT4X models. The 44-3965 lift kit utilizes the very best in ReadyLIFT engineering with boxed steel front/rear cross members and full width front skid plate constructed of thick 3/16" plate steel. New 1/4-inch boxed plate steel differential drop brackets feature a double gusset and boxed center rib to take the abuse of front differential torsional twisting. Our 6" lift kit features heavy-duty angled and offset top mount strut extensions that realigns the struts to optimize shock performance and minimize wear. A specially designed lower mount strut pre-load spacer offers the added benefit of a slight increase in spring rate to better handle the larger wheels and tires that will find their way onto this new lifted truck. To lift the rear, new 5" tall fabricated steel rear blocks with integrated bump stop landings have been added as well as new Bilstein 5100 series rear shocks. Recommended max tire with no trimming: 20x9 0 offset - 35x12.50 tire.*Max with trimming: 20x10 -18 offset - 35x12.50 or 325/60R20*Trimming requirements for larger than recommended wheel/tire include front valance, front felt liner edge, rear felt liner edge and front rear well edge mud flap. NOTE: Use of Auto 4 Hi feature not recommended. NOTE: Not for use on Adaptive Ride Control or Multimatic™ vehicles. NOTE: This GM 1500 kit is NOT COMPATIBLE with vehicles equipped with rear composite mono-leaf springs. The mono-leaf is easily identifiable – the U-bolt is round/circular around the top of the leaf spring. This kit only works with vehicle equipped with traditional steel leaf springs – identified by ‘square’ U-bolts.