This part is listed by BMW as BMW part number 34212284811 (34 21 2 284 811) and is described as Brake Rotor, Left Rear for 2015+ F80 M3, F82 M4 and 2017+ F87 M2.
This is the authentic OEM Motorsport steel brake disc, Left (Driver Side) Rear, the same that came with the car as new. This can be used on all 2015+ M2/M3/M4 with the standard (cast iron) brake system. (Not for CCB option.)
SHW is the original manufacturer for the 2-piece lightweight floating brake discs found on nearly all BMW M and M Sport models. SHW's market-leading engineering and design has produced brake discs that are lighter, improving gas mileage and reducing pollution, and stays cooler even under extreme conditions and challenging environments. With headquarters and brake disc production in Germany, SHW is a Tier 1 supplier to several German brands including BMW and BMW M Gmbh, as well as other European and American brands. All SHW brake discs are TUV approved and made in Germany using the same foundries used for their original equipment rotors.
For questions, full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
2 Series
F87 (2016-2021) > M2 N55 (2016-2018)
3 Series
F80 (2015-2018) > M3 (2015-2018)
4 Series
F82 / F83 (2015-2020) > M4 (2015-2020)