Last updated 2021-01-20, BDS Suspension , BDS:123426 , This kit will fit F350's including Dually truck with the 4.5 rear axle , 2017+ Ford F350 Super Duty Recoil traction bar mount kit for 4.5 inch axle tubes , RECOIL Traction Bars BDS Suspension introduces a revolutionary spring loaded traction bar system engineered to improve traction and limit axle wrap without negatively affecting suspension travel or ride quality. These next generation RECOIL traction bars