Manufactured by Air lift | 59103 | SlamAir rear overload system, fits 88-13 GM 1500, 73-03 F150 and 69-01 Ram 1500 with 2 to 4 inch rear drop, SlamAir Adjustable Air Springs for Lowered Trucks (Lowered 2-4 in.) Application Type: Rear Kit , SlamAir fits most lowered trucks with a 2, 4, or 6 inch drop, including trucks with flipped axles and notched frames. Each kit includes everything you need to install the system, and our end caps are made of an ultra high-strength nylon composite which is Product information updated on 2023-08-21