The R1 Concepts Geo-Carbon drilled-and-slotted rotor for 2008–2020 Subaru WRX STI rear right is a replacement rotor combining a Geo-Carbon surface treatment with drilled and slotted machining. The treated braking surface is intended to aid heat and debris management for steadier pad contact and is offered specifically for the rear-right wheel position.
R1 08-20 Subaru WRX Sti Rear Right Drilled & Slotted Geo-Carbon Rotor