Rough Country - 1297BOX6 - Kicker Bar Kit for 6-inch Lifts for Chevrolet: 01-06 Silverado 1500 HD 4WD, 01-10 Silverado 2500 HD 4WD, 01-06 Silverado 3500 4WD, 07-10 Silverado 3500 HD 4WD; GMC: 01-06. FEATURES: Adds rigidity to the front end for off-road use NOTES: Only fits Rough Country 6-inch kits KIT CONTENTS: Kicker bars, mounting brackets, and hardware SPECS: Installation Time: 2-3 hours; Weight: 13.25-lbs FITMENT: Chevrolet: 01-06 Silverado 1500 HD 4WD, 01-10 Silverado 2500 HD 4WD, 01-06 Silverado 3500 4WD, 07-10 Silverado 3500 HD 4WD; GMC: 01-06 Sierra 1500 HD 4WD, 01-10 Sierra 2500 HD 4WD, 01-06 Sierra 3500 4WD, 07-10 Sierra 3500 HD 4WD