Add an aggressive stance and appearance to the 1970-1981 F-body. This spring set lowers the front of the vehicle approximately 1" (part # RK200-11) or 2" (part # RK200-12) for a lower center of gravity, and improved handing. The progressive rate spring design provides superior handling, and improved ride quality. These springs have been designed to work even better in conjunction with REKUDO shocks, front sway bar, and lowering leaf springs. Black finish. Sold in pairs.