MMX 2-piece 370mm floating rear discs and rotors for BMW G8x M2, M3, M4
Upgrade your BMW G8x braking with MMX 2-piece 370mm floating rear brake discs and rotors. These rear discs run up to 30% cooler than OE and increase cooling efficiency by up to 30%, giving you stronger, more consistent stopping power on fast road and track while resisting fade, warping and cracking.
Why choose MMX 370mm floating rear discs for your BMW M2, M3, M4
- 370mm x 24mm 2-piece floating design that allows the disc and hat to expand radially and axially under heat, massively reducing the common causes of warping and cracking seen on single-piece discs.
- Runs up to 30% cooler than OEM and increases cooling efficiency up to 30% for repeatable performance and confidence lap after lap and mile after mile.
- 72 directionally curved internal vanes pump cool air through the rotor to dissipate heat fast and keep the braking system stable.
- Left and right-hand specific rotors for optimised airflow and consistent cooling across both sides, unlike many OEM rear brake discs.
- Trademark MMX grooves enhance initial bite, sweep away gas and debris, and help maintain a clean pad face for balanced brake feel and longevity.
- 6061-T6 aircraft specification aluminium centre hat mated to a proprietary rotor alloy engineered to withstand extreme braking temperatures while holding form.
- Long-lasting vs factory discs thanks to the efficient 2-piece floating construction and improved heat management.
- Pad friendly: works brilliantly with factory pads in real-world road use. For heavy track use, consider a dedicated track pad compound. Compatible with OEM or aftermarket performance pads.
- Perfect match to MMX front replacement discs with matching grooves and matching performance for a balanced brake upgrade front to rear.
Fitment
Designed for BMW G8x platform:
- BMW M2 G87
- BMW M3 G80, G81
- BMW M4 G82, G83
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Real results you can feel
We have run these MMX 2-piece 370mm floating rear rotors on our own cars and customer builds and the feedback is consistently positive: stronger bite, better pedal feel and noticeably improved heat control on spirited drives and track days, with excellent durability in all conditions.
Fitting and support
Professional installation recommended. For fitting, book with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Technical summary
- Size: 370mm diameter x 24mm thickness
- Type: 2-piece floating rear discs and rotors
- Vanes: 72 directionally curved internal vanes
- Centre hat: 6061-T6 aluminium
- Rotor material: proprietary alloy
- Orientation: left and right-hand specific
- Cooling performance: up to 30% cooler vs OE, up to 30% increased cooling efficiency
- Pad compatibility: OEM and aftermarket performance pads
If you are searching for BMW G8x rear brake discs, BMW M3 rear rotors, BMW M4 rear discs, BMW M2 rear rotors, 370mm rear brake upgrade, 2-piece floating rear discs, grooved slotted rear brake discs, performance rear brake kit for BMW G80 G81 G82 G83 G87, this MMX rear rotor upgrade is the solution for fast road and track performance with OEM-like refinement.