Rough Country - 1272BOX4 - Kicker Bar Kit for 4-6-inch Lifts for Chevrolet: 99-06 Silverado 1500 4WD; GMC: 99-06 Sierra 1500 4WD FEATURES: Adds rigidity to the front end for off-road use NOTES: Only fits Rough Country 4-inch and 6-inch kits KIT CONTENTS: Kicker bars, mounting brackets, and hardware SPECS: Installation Time: 2-3 hours; Weight: 14.7-lbs FITMENT: Chevrolet: 99-06 Silverado 1500 4WD; GMC: 99-06 Sierra 1500 4WD