MMX two-piece slotted 370x24 rear rotor set for BMW F80 M3, F82/F83 M4, F87 M2 and M2 Competition

Transform the stopping performance of your BMW M with MMX two-piece floating rear rotors in 370 x 24. Engineered for the F8x platform, these vented slotted rears deliver lower operating temperatures, stronger bite and consistent performance on fast road and track days. Expect up to 30 percent lower temps versus stock with around 30 percent greater cooling efficiency for dependable, repeatable braking when you push hard.

The lightweight aluminium bell and floating steel ring work together to manage heat expansion, helping prevent the warping and cracking you often see on single-piece cast discs. Pedal feel stays reassuring, fade is kept at bay and real-world service life is extended. Match them with the MMX fronts for a perfectly balanced package front to rear.

Key reasons to choose MMX 370 x 24 rear rotors for your F8x

• Application: BMW F80 M3 saloon, F82 M4 coupe, F83 M4 convertible, F87 M2 and M2 Competition
• Two-piece floating construction controls heat growth for stability and durability
• 36 curved internal vanes actively pump air for rapid heat rejection
• Left and right handed rotors to optimise airflow and temperature control
• Slotted friction faces for sharp initial response, pad deglazing and confidence in the wet
• 6061-T6 aircraft-grade aluminium hat for strength and thermal management
• High performance rotor alloy designed to handle extreme braking temps and hold its shape
• Direct bolt-on with factory calipers and lines on F8x cars
• Compatible with OEM pads and popular performance pad compounds for mixed use
• Designed to pair with MMX front discs for a complete M-car brake upgrade

Real performance gains you can feel

• Lower peak temperatures for reduced fade during spirited drives and on circuit
• More consistent pedal pressure and stopping power lap after lap
• Significantly reduced risk of heat-related distortion compared with one-piece discs
• Longer service life in daily and performance use

Cooling technology explained

Directional internal vanes draw cooler air from the centre and expel heat as the rotor turns, acting like a pump. Because each side is specifically handed, airflow is maximised on both corners, keeping temperatures stable and performance consistent. The slotted face further helps with gas evacuation and pad refresh for dependable bite.

Vehicle fitment

Designed for the BMW F8x platform rear axle:

• BMW F80 M3
• BMW F82 M4
• BMW F83 M4 Convertible
• BMW F87 M2 and M2 Competition

Please confirm your existing rear disc size is 370 mm x 24 mm before ordering.

Installation and support

Professional fitting recommended. MJ Modifications in Warwickshire can supply and install. For a fitting quote or advice, email info@mjmodifications.co.uk.

Tried, tested and loved

We run these MMX two-piece 370 x 24 rears on our own builds and for customer cars. Owners report sharper bite, improved modulation and reliable fade resistance with factory pads on fast road, and superb stability with track-focused compounds when used on circuit.

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