EBC two‑piece SG Racing front rotors for 2021+ BMW M3/M4 (G80/G82/G87) without carbon ceramic brakes are a floating rotor assembly designed to reduce unsprung rotational mass and allow replacement of the wear-prone outer friction ring while reusing the center hub and bobbins. The vented 380mm discs with one‑piece hat aim to lower long‑term running costs by enabling outer ring replacement instead of full rotor replacement.
EBC Racing 2021+ BMW M3/M4 (G80/G82/G87) (w/o Carbon Ceramic Brakes) 2 Piece SG Racing Front Rotors