The Bilstein B6 4600 Series (33-253213) is a high-performance monotube gas pressure shock absorber designed specifically for the rear of 2015-2016 Ford F-150 trucks. Engineered as a direct fit upgrade to the original shocks, it provides improved stability, precise handling, and superior comfort for both highway and light off-road use. This shock absorber utilizes a velocity-sensitive, digressive piston that reacts instantaneously to changing road conditions. Components included in this unit: - 1 x Rear Shock Absorber (Part No: 33-253213) - Installation Bushings and Washers Note: If purchased as a pair or set, please refer to the specific kit SKU. This listing is for a single rear shock absorber.