If you're sporting F-250/350, there comes a point in time where your stock rear shocks won't cut it. For better handling, control, and smoother driving experiences on and off the road, the Bilstein 5100 Series Rear Shock serves as a great upgrade/replacement. The Bilstein 5100 series has a lot going for it with design and construction elements that add noticeable performance enhancements. Out of the box you're treated to a velocity sensitive digressive piston design that offers consistent and fade free performance! Put all together, you are treated to a front shock that can withstand just about any and all environments.