The Wilwood D31 rear brake kit for 1969–1983 Porsche 911 is supplied with 11.42in rotors and flex lines, finished in red. Sized for the rear axle of the specified model years, this kit bundles the rotor diameter and required hydraulic line hardware to provide a direct-fit rear-axle replacement or upgrade for period 911 braking systems where those dimensions are correct.
Wilwood 69-83 Porsche 911 D31 11.42in. Rear Brake Kit w/ Flex Lines - Red