The Timbren Suspension Enhancement System for 2009 Ford F-150 Platinum 4WD rear suspension is a rubber-spring upgrade that absorbs road shocks and reduces rear sag when towing or carrying heavy loads. Rated to 8600 lbs, the bolt-on kit installs with basic hand tools and requires no airlines or fittings. Hollow rubber springs provide a progressive rate, increasing support as weight rises to maintain stability and improve handling.
Timbren 2009 Ford F-150 Platinum 4WD Rear Suspension Enhancement System