Rough Country - 262.20-5-inch Suspension Lift Kit w/Premium N3 Shocks for Chevrolet: 07-13 Silverado 1500 4WD; GMC: 07-13 Sierra 1500 4WD FEATURES: Runs 33-inch tires on factory 20-inch wheels; Provides highly sought level stance; High clearance crossmember design gives unmatched ground clearance; Requires no modification to the stock drivetrain or exhaust; 100% precision laser cut materials using the latest computer aided design process; No need to disassemble struts; Fabricated blocks are stronger and offer a longer lifespan than cast blocks; Includes application valved Premium N3 shocks NOTES: Requires minor cutting and drilling; Does not fit 2007 "Classic" models; Does not fit models with electric steering; Does not fit AWD models; 18-inch or larger wheels are required; Please view installation instructions for complete information on proper tire/wheel combinations KIT CONTENTS: Front: Lifted knuckles, front and rear crossmembers, upper strut spacers, brake line brackets, differential drop brackets, CV spacers, sway bar drop brackets, and lower skid plate; Rear: 4.5-inch lift blocks, u-bolts, and brake line bracket; Shocks: (2) Premium N3 Rear Shocks SPECS: Installation Time: 8-10 hours; Recommended Tire Size: 33-by-12.50; Weight: 173.44-lbs; Superseded: 262S FITMENT: Chevrolet: 07-13 Silverado 1500 4WD; GMC: 07-13 Sierra 1500 4WD