KRC's 5" Coil Over Shock Kit fits most Modified race cars, IMCA, UMP, etc. This kit works well with 11", 13", 15", & 16" inch springs. Acceptable to 4 link, swing arm & 2 link suspensions. Kits include anodized aluminum components (top, threaded bottom, sleeve, and diaper pin). KRC Steel Coil-Over Adjustment Wrenches are available separately (#KLU8840 & #KLU8842).Pit Stop USA offers Kluhsman Racing Components 5" Coil-Over Kit - Fits Bilstein Shock 8820 at low everyday prices. Be sure to check out all of our products from Kluhsman Racing Components including Kluhsman Racing Components Bilstein Coil-Over Kits and KRC Bilstein Coil-Over Kits.