The R1 Concepts Geo-Carbon drilled and slotted brake rotor fits the rear left of 1991–1999 BMW 328is models. With a drilled-and-slotted face and Geo-Carbon finish identified in the product name, the rotor assists in managing heat and clearing pad residue during typical road use. It serves as a position-specific replacement to restore an even braking surface and preserve consistent rear braking response.
R1 91-99 BMW 328Is Rear Left Drilled & Slotted Geo-Carbon Rotor