911 RS/RSR Style Rear Bumper 9", 78-on Body Panels and Accessories_Windows and Related Accessories ): The specified diameter is

): The specified diameter is the outer diameter of the pipes connecting to the motor side of the headers

This pair of complete Porsche 911 RSR rear quarter panels runs from the engine-lid edge to the door and provides a 12 1/2-inch flare for wider rear wheels

and Carrera front fenders

Fitment: 1965-1989 Porsche 911 models

Their openings route cooling air toward the brakes

911 RS/RSR Style Rear Bumper 9", 78-on Body Panels and Accessories_Windows and Related Accessories ): The specified diameter isThis narrow body RS RSR style rear bumper replaces the impact bumper profile on 1974 1994 Porsche 911, SC, Carrera, and 964 models with 9 inch rear quarters or flares. Dimensions & details Rear quarter fitment: 9 inches Model fitment: 1974 1994 Porsche 911, SC, Carrera, and 964 Average weight: 9 lbs Factory assembly reference weight: 52 lbs Material option: Carbon fiber available