While Jaguar was certainly at the leading edge of technology by fitting disc brakes in the fifties, many improvements have been made since. Our Wilwood brake conversion kits employ lightweight alloy calipers for a reduction in un-sprung weight and large gains in pad area. Supplied with all necessary adapters, hardware and streetable brake pads. A great complement would be a set of braided stainless brake lines. Kit includes four-piston calipers, mount brackets, hardware and brake pads. Does not include rotors. For XK-150 rotors, order part number 06-0024; for Series I E-Type rotors order 06-95010. This kit will not show as being in stock but no worries; it is assembled from individual pieces when ordered.