Give your 2011-2020 GM 2500/3500 4WD the ultimate off-road shock by installing the Bilstein 25-196481 5160 Series Shock Absorber. This monotube shock features high gas pressure for longer life and a self-adjusting disc valve that rapidly reacts to changing road conditions to give you truck supreme handling on and off-road. The 5160 series shocks have a remote reservoir for greater shock oil capacity for better heat dissipation. Specifications:Â Part Number: 25-196481 Series: 5160 Series Drive Type: 4WD Position: Rear Descriptor: Rear Lifted Height: 0-2" Quantity Needed Per Vehicle: 2 (Sold Individually) Finish: Zinc Plated Reservoir: Yes Body Design: 46mm ID Smooth Body (Non-Coilover) Measurements:Â Collapsed Length (IN)16.54 Extended Length (IN)28.09 Collapsed Length (MM)420.0 Extended Length (MM)713.5 Applications: Silverado 2500 HD 2019-2011 Silverado 3500 HD 2019-2011 Sierra 2500 HD 2019-2011 Sierra 3500 HD 2019-2011 Note: Lift height is suggested by mfg. Due to the many different aftermarket suspension systems it is recommended that a measurement is taken for proper application. Sold individually.