Manufactured by McGaughys | 93047 | 1999-06 Silverado/Sierra Rear 4 Inch Kit, Includes Flip Kit And Raising Hanger, 2 or 4 wheel drive, McGaughys started off manufacturing suspension parts for classic Chevy cars but over the years they have evolved into a full line suspension manufacturer including Lowering Suspension, Lift Kits as well as Classic Car Suspension parts. Product information updated on 2023-05-17