Performance tuned for vehicle specific application; aluminum body dissipates heat faster than steel; multiple internal damping zones; external reservoir system dissipates heat fast; black anodized cnc machined aluminum components\nKit: 18-ON Jeep JL; Rear; Internal Bypass; 3.0 Series; P/B; 9.8in.; 2-3in. Lift; DSC\nJeep Wrangler JL: 2018 - 2020