Rough Country - 264.20-7.5-inch Suspension Lift Kit w/Premium N3 Shocks for Chevrolet: 07-13 Silverado 1500 4WD; GMC: 07-13 Sierra 1500 4WD FITMENT: Chevrolet: 07-13 Silverado 1500 4WD; GMC: 07-13 Sierra 1500 4WD 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: 6.5-inch fabricated anti-wrap lift blocks, u-bolts, and brake line bracket; Shocks: (2) Premium N3 Rear Shocks BENEFITS: Runs 35-inch tires on factory 20-inch wheels; Features application valved N3 series shocks; Unmatched ground clearance due to high clearance crossmember design; 100% precision laser cut materials used in latest computer aided design process; Disassembly of the front struts is not required; Provides highly sought level stance when complete; Requires no modification to the stock differential mounts, drivetrain, or exhaust TECHNICAL NOTES: Does not fit 2007 "Classic" models; Does not fit models with electric steering; Does not fit AWD models; Minor cutting and drilling is required; 18-inch or larger wheels are required; Please view instructions for complete information on proper tire and wheel combinations ITEM SPECIFICS: Installation Time: 8-10 hours; Recommended Tire Size: 35-by-12.50; Weight: 188.82-lbs; Superseded: 264S