Over the years, deposits form inside your rubber brake lines, creating a hard brake pedal and sticky calipers. The permanent cure is to install a set of our stainless brake lines. They are teflon-lined to prevent mineral build-up and braided stainless steel to reduce line flex! (sold in sets of four.) make sure you thoroughly bleed the system with some of our great ate blue brake fluid. make sure you specify your model when ordering. Excellent brake hose for racing.