Rear Brake Rotor, DFC - G20, G22, G26, G30, G12, X3, X4, Z4, Supra

This one-piece cast front 345x24 brake disc is a direct replacement for the factory equipment on 2022+ G42 M240i, 2019-2024 G20 M340i, 2021-2024 G22/G23/G26 M440, 2020-2023 G30 540i, 2018-2024 G01 X3 M40i, 2019-2025 G02 X4 M40i, 2019-2023 G05 X5 40i, and 2019-2025 G29 Z4 M40i models.

Replaces the following BMW brake rotor part numbers:
34208853554 (34-20-8-853-554)
34216860925 (34-21-6-860-925)

About DFC 1-Piece Rotors: Single-piece cast brake rotor with GEOSPEC silver coating on the hat and vanes to prevent corrosion and improve appearance. The factory BMW rotor is a 2-piece assembly (iron disc with an aluminum hub). BMW advertised the lighter weight as a way of lowering emissions and improving fuel economy. There is likely no performance difference between them but the single-piece cast disc will be slightly heavier compared to stock.