Ford was the only vehicle manufacturer to use Dana Twin Traction Beam® Independent Front Suspension Axles which can be found on 1980-1997 model year Ford 4x4s. The Twin Traction Beam® IFS Axle line includes the coil spring Models 28 and 35 found in Bronco II, Explorers and Ranger pickups, the Model 44 which was used in fill size Broncos, F-150 (coil springs), and light duty F-250 pickups (leaf springs), and the leaf sprung 4500 to 4600 pound rated Model 50IFS axle in heavy GVW F-250 and 1980-1985.5 F-350 trucks.
