Bilstein Digressive Valve 2" Steel Body Shock w/ Ends are designed for Asphalt & Dirt Late Models and IMCA type Modifieds. Bilstein's industry leading digressive valving technology with their patented piston head design delivers a new level of control by damping slow suspension movements more effectively. Also, sharp bumps do not upset the chassis. Sealed, 46mm steel body, off the shelf digressive valvingsnap ring groove to accept coil over kit1/2" eyesCoil-Over Applications require Bilstein Coil-Over Kit sold separately.Pit Stop USA offers Bilstein SZ Series 1.81" (46mm) Steel Shock - Digressive Valve - 7" Stroke - 320 lb. Rebound, 80 lb. Compression S7Z6010 at low everyday prices. Be sure to check out all of our products from Bilstein Shocks including Bilstein Shocks Shocks and Bilstein Shocks Bilstein SZ Series Steel Shocks.