The Timbren Suspension Enhancement System for 2017 Ford F-350 Super Duty rear adds progressive hollow rubber springs that cushion road impacts and firm up under load to prevent rear sag when towing or carrying heavy cargo. The simple bolt-on kit installs without airlines or drilling and is low maintenance. Rated for an 8600 lb rear capacity, it improves handling, reduces squat and comes backed by a lifetime warranty.
Timbren 2017 Ford F-350 Super Duty Rear Suspension Enhancement System