The Timbren Suspension Enhancement System for 2004 Ford F-150 STX RWD rear improves load handling and ride control using a rubber cushion that absorbs road shocks and automatically adapts to uneven loads. It's a simple bolt-on solution with no airlines or fittings to maintain. Rated for a 7000 lb capacity and suited to severe service, it reduces sagging, improves handling and carries a lifetime warranty.
Timbren 2004 Ford F-150 STX RWD Rear Suspension Enhancement System