Upgrade your F-250/350 to the Bilstein B6 4600 Rear Shock Absorber and get a better overall driving experience. Featuring a digressive piston that absorbs harsh impacts, soaks up rough roads and reduces dive/squat when braking. With an aluminum body, you can be sure that this unit will last as long as your truck does. Built with heavy duty quality, this shock absorber is designed to last! The Bilstein B6 4600 series remote reservoir rear shock absorber provides maximum damping control, even when your vehicle is in motion. For better handling, control, and smoother driving experiences on and off the road, the Bilstein B6 4600 Rear Shock Absorber serves as a great upgrade/replacement!