MMR Performance | 2-Piece 370mm floating rear discs | BMW G8x

At PERON Automotive, we believe in braking systems that perform as well as they look—and the MMR Performance Rear Brake Disc Upgrade delivers exactly that. Engineered as a direct replacement for your factory OEM rotors, these two-piece floating discs are designed to provide significantly enhanced braking performance and cooling, with a weight-saving construction that’s track-tested and road-ready.

Each disc features directional internal cooling vanes that improve airflow across the rotor surface, promoting more even pad wear, reducing heat saturation, and resisting brake fade under demanding conditions.

Sold as a matched left and right-handed pair, these 370mm x 24mm rotors are ideal for enthusiasts looking to upgrade rear-end braking precision—whether paired with OEM front brakes or MMR’s matching 2-piece front disc upgrade.

Key Features:

• Direct-fit OEM replacement for plug-and-play installation

• Two-piece floating rotor design reduces unsprung weight

• 370mm x 24mm rotor size with left & right-handed orientation

• Directional cooling vanes for maximum heat dissipation

• Improves braking consistency, pad life, and thermal management

• Matched front 2-piece MMR discs available

Whether for spirited road use or track days, these rear discs are the perfect finishing touch to a balanced and reliable brake upgrade.