The R1 Concepts Geo-Carbon drilled-and-slotted rotor is a replacement brake rotor combining a Geo-Carbon surface with drilled and slotted machining to help control heat and support consistent pad contact. It is specified for 2021–2025 Ford E-450 Super Duty rear-left applications, provided as the matching wheel-position rotor for that chassis and side.
R1 21-25 Ford E-450 Super Duty Rear Left Drilled & Slotted Geo-Carbon Rotor