Finish the conversion at the back of the car. The MMX Performance 2-Piece Carbon Ceramic Rear Rotor Set replaces the factory iron rear discs on G8X M cars with carbon ceramic, bolting straight to the OE calipers and hardware.
Pair it with the MMX carbon ceramic front rotor set (MMR30-1603F) for a full iron-to-CCB conversion.
Carbon Ceramic Rear Rotor Conversion for G8X M Cars
Each 370 x 24mm disc weighs 4.45 kg, 46% lighter than steel. The cross-drilled face helps evacuate gas and pad material, and the 2-piece floating design lets the ring expand radially and axially under heat, so it resists warping and cracking.
What's Included
- MMX 2-piece carbon ceramic rear rotor set, 370 x 24mm (MMR30-1604R)
Key Features
- Direct bolt-on replacement for the OE iron rear discs
- 370mm x 24mm, 4.45 kg per disc, 46% lighter than factory steel
- Cross-drilled rotor face for gas and pad evacuation
- 2-piece floating design with anodized black hat
- 1-year MMX warranty against defects in materials and workmanship
- Part number: MMR30-1604R
Vehicle Fitment
Fits G8X M cars equipped with the factory iron brake system:
- BMW G80 M3 Sedan (2021-2026)
- BMW G82 M4 Coupe (2021-2026)
- BMW G83 M4 Convertible (2022-2026)
- BMW G87 M2 (2023-2026)
Installation Notes
Professional installation is recommended. Use pads suited to carbon ceramic discs and bed them in properly.
- Remove the rear calipers and factory iron rotors.
- Clean the hub faces and fit the MMX carbon ceramic rotors.
- Reinstall the calipers with CCB-compatible pads and torque to BMW specification.
- Bed in the pads following the pad manufacturer procedure.
