The R1 Concepts Geo-Carbon drilled-and-slotted rotor for 1969–1983 Porsche 911 applications is listed for the rear left position. It combines the Geo-Carbon surface finish with a drilled-and-slotted pattern as specified, delivering the rear-left rotor configuration identified for that Porsche 911 fitment range without altering the listed orientation or application.
R1 69-83 Porsche 911 Rear Left Drilled & Slotted Geo-Carbon Rotor