This is the left rear Euro-spec brake rotor used on the E39 M5.
Motorsport rotors have a two-piece design with a floating iron friction ring riveted to an aluminum hub. This reduces unsprung weight and allows the friction ring to expand and contract when heated/cooling as well as transfer less heat into your hub. They happen to look great too and emphasize the performance of your M car.
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:
5 Series
E39 (97-03) > M5 (00-03)