The Timbren Suspension Enhancement System for 2004 Ford F-150 STX 4WD rear adds load-support and shock absorption through a rubber, self-adjusting cushion that bolts in without drilling or airlines. It helps reduce trailer sway and suspension settling while improving ride quality. Rated to 7000 lbs for severe service and towing, it eliminates sagging and comes with a lifetime warranty for long-term use.
Timbren 2004 Ford F-150 STX 4WD Rear Suspension Enhancement System