The Wilwood D31 rear brake kit for 1969–1983 Porsche 911 includes 11.42in rotors and flex lines, finished in yellow. Sized to fit the rear axle of those model years, the kit provides the rotor diameter and necessary hydraulic line hardware as a packaged rear-axle replacement or upgrade for classic 911 braking applications where the dimensions match.
Wilwood 69-83 Porsche 911 D31 11.42in. Rear Brake Kit w/ Flex Lines - Yellow