Oversize; requires custom large rotor brake caliper lift brackets / caliper mounts. 330mm (13") OD; 5mm thick; 56.3mm ID; 8mm (5/16") counterbored mount holes; 3.25" BCD. Mount style B. Fits OEM or accessory cast & laced wheels with 3.25" bolt circle mount holes. Replacement reference 41500022 (left only) & 41500068 (right only); 41500172. Note: All Galfer brake rotor designs are symmetrical. This allows left or right side installation without optical issues. Galfer Cubiq® discs are the lightest discs in the entire range; achieving a reduction of up to 40% compared to the original discs. They enhance cooling and ensure even wear of the brake pads; positioning themselves as the most "high tech" discs in the custom category. The floating version features a stainless steel core (AISI 420). Both have cathodic electrocoating treatment to prevent corrosion. Note: This are larger diameter than stock brake rotors. These require custom caliper lift brackets / caliper mounts like Killer Custom''s 587890 / 587891 for Touring or spacers when running axial calipers