OEM NEW GENUINE PART FEATURES 2.25" OD Stainless Steel Body 2.0" OD Billet Aluminum Piston 7/8" NitroSteel BlackPiston Rod Polyurethane Mounting Ends 2.25" OD Aluminum Reservoir w/-6 Stainless Steel O-ring Hose Extended Length ? E27.05 Collasped Length ? C17.39 Stroke Length ? S9.66 Top Mount ? EB1 Bottom Mount ? EB1 Dirt Logic 2.25 Resi Shock Dirt Logic 2.25?s are designed to replace factory shocks with a larger, more robust configuration. The 2.25 size is what separates it from other replacement take apart shocks for a superior ride, both on and off road. Shocks are pretuned for each Fabtech suspension, accounting for larger tires, providing the finest all around damping.