The Wilwood D31 rear brake kit for 1984–1989 Porsche 911 includes 11.42in drilled rotors and flex lines, finished in red. Intended for direct-fit rear axle use on those model years, this kit provides the specified rotor diameter and included hydraulic lines as a packaged replacement or upgrade for period 911 rear braking systems where the dimensions match.
Wilwood 84-89 Porsche 911 D31 11.42in. Rear Brake Kit w/ Flex Lines - Drilled Rotors (Red)