GiroDisc E46 M3 / E8X Z4M Front Rotor Set - 345mm

These GiroDisc 2-piece rotors are a direct replacement for the BMW E46 M3 with the 345mm setup found on Competition Package (ZCP) and CSL models. Weighing in at 17.5 lbs per rotor, these fully floating assemblies help shed unsprung weight and rotating mass from the front axle of the vehicle. The rotor rings are machined from a proprietary casting made of high-carbon iron formulated to GiroDisc’s specifications. This superior metallurgy results in a rotor that holds up better, and the 48 curved vanes act as a centrifugal pump pulling air in through the hub to effectively cool the rotors under hard use. The 2-piece design means a reusable hat which can be attached to new rings (part number D1-012) when they need to be replaced. All major components including the hats, rotor rings, and drive pins are manufactured in-house at our facility in Bellingham, WA from domestically sourced materials. The hat is made from 6061-T6 aluminum and coated in a black anodize finish. The drive pins are mad