R1 2012-2021 BMW 428I xDrive Coupe/Conv Front R1 Carbon Alloy GeoMET Dimpled & Slotted Rotor

R1 Concepts is known for making well-built brake components that offer a step up from stock. This particular rotor is a great example, featuring a Hi-Carbon Alloy construction for better thermal stability and reduced noise. The GEOMET coating helps protect against rust and corrosion, keeping your braking system looking good and functioning properly for longer. You'll also notice the dimpled and slotted design, which helps to dissipate heat and gases more effectively than a plain rotor, leading to more consistent stopping power, especially during harder braking situations. This rotor fits a wide range of BMW models, including the 230i, 330i, and 428i, making it a solid option for many drivers looking to improve their braking performance.

The dimples on the rotor surface help to break up the boundary layer of air, allowing heat to escape more easily. The slots, on the other hand, help to sweep away brake dust and gases that can build up between the pad and the rotor surface. This combination means you get a more reliable and responsive brake feel, whether you're navigating city streets or tackling winding roads. The Hi-Carbon Alloy material itself is a step up from standard cast iron, offering improved strength and resistance to warping under heat.