Adjustable coilover construction 2.5" diameter (OD) stainless steel shocks with Eibach coil springs Billet aluminum pistons with NitroSteel matte black piston rods Available with optional reservoir including a -8 stainless steel O-ring hose Sold as a pair For really aggressive damping off-road, you'll want Fabtech Dirt Logic 2.5 coilover shocks. Fabtech devoloped these coilovers using their years of desert racing experience to provide you with exceptional performance and damping under the most aggressive off-road driving conditions. Fabtech offers Dirt Logic 2.5 coilover shock absorbers in both a reservoir and non-reservoir style with an adjustable coilover construction. They even have a remote reservoir style that includes reservoir frame mounts for select applications that may not have room for a piggyback style shock. All Fabtech Dirt Logic 2.5 coilover shocks feature a 2.5" stainless steel body with a 2.25" billet aluminum piston and Fabtech's exclusive .875" NitroSteel matte black piston rod. For the coil portion, Fabtech uses Eibach coil springs. The piston keeps the oil & nitrogen gas separated which prevents fading and maintains consistent ride quality. Mounting is pretty simple due to the spherical ball mounting ends and the fact there is no drilling, cutting, or other modifications needed. Dirt Logic 2.5 series coilover shock absorbers are tuned specifically for your lifted truck and they are serviceable shocks, so you can be sure these will last you a lifetime. Order a set for your truck today!