Rough Country - 70519-54-inch Curved LED Light Bar Upper Windshield Mounting Brackets (GM Pickup/SUV) for Chevrolet: 07-13 Avalanche 1500 4WD/2WD, 07-13 Silverado 1500 4WD/2WD, 07-14 Silverado FEATURES: Compatible with Rough Country's 54-inch Curved CREE LED Light Bar Kit (#72954); Compatible with other 54-inch curved aftermarket lights with a 5/16-inch or 8-mm post NOTES: This bracket kit was designed to fit a Curved LED light 53.625-inches long from mounting surface to mounting surface; Does not fit 54-inch straight light bars; Requires minor drilling KIT CONTENTS: (2) Mounting brackets, (2) gaskets, and hardware SPECS: Installation Time: 1-2 hours; Weight: 1.7-lbs FITMENT: Chevrolet: 07-13 Avalanche 1500 4WD/2WD, 07-13 Silverado 1500 4WD/2WD, 07-14 Silverado 2500 HD 4WD/2WD, 07-14 Silverado 3500 HD 4WD/2WD, 07-13 Suburban 1500 4WD/2WD, 07-13 Tahoe 4WD/2WD; GMC: 07-13 Sierra 1500 4WD/2WD, 07-14 Sierra 2500 HD 4WD/2WD, 07-14 Sierra 3500 HD 4WD/2WD, 07-13 Yukon 4WD/2WD, 07-13 Yukon XL 1500 4WD/2WD