Brembo 08-13 M3 (E90/E92/E93) Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Slotted Type-1-Black

The 380x28mm, two-piece rotor design in this Brembo GT Big Brake Kit is a key feature for high-performance braking. This setup uses a floating rotor system, where the cast iron friction ring is mounted to a billet aluminum hat. This design helps manage heat expansion and reduces the risk of rotor warping under heavy use, which is crucial for track days or spirited driving. The kit is specifically built for the 2008-2013 BMW M3 models (E90, E92, and E93 chassis).

This kit includes Brembo's 4-piston GT calipers, known for their solid construction and consistent clamping force. The calipers are paired with Type-1 slotted rotors, which help to vent gases and debris away from the pad surface. This improves braking performance by maintaining a cleaner contact patch between the pad and rotor, especially during repeated hard stops. The cast iron friction rings are substantial, measuring 380mm in diameter and 28mm thick, providing ample thermal mass to absorb and dissipate heat.

When installing a big brake kit like this, it's important to ensure you have adequate clearance within your wheels for the larger calipers and rotors. The black finish on the calipers offers a clean, aggressive look behind the wheel spokes. This kit is a significant upgrade over the factory braking system, designed to handle the demands of performance driving and provide a more responsive and reliable pedal feel.