Description
Maximize rear braking efficiency and cooling performance on your BMW G8X M2, M3, or M4 with MMR Performance’s precision-engineered 2-piece floating rear rotor set. These 370mm rotors are a direct replacement for your OEM setup, offering up to 30% improved heat dissipation while maintaining full compatibility with factory and performance brake pads.
Key Features:
- 370mm x 24mm 2-piece floating rotor design
- Rear fitment for OEM calipers
- Compatible with both OEM and aftermarket brake pads
- Left-hand and right-hand directional disc set
- 6061-T6 aerospace-grade aluminum center hats
- Proprietary alloy rotor rings for high-temperature resistance
- 72 internal directionally curved vanes for maximum airflow and heat dissipation
- Floating bobbin mounting system to reduce warping and extend rotor life
Fitment Compatibility:
Engineered for BMW G-Series M-Cars including:
- BMW G87 M2 (2023–present)
- BMW G80 M3 (2021–present)
- BMW G82 / G83 M4 (2021–present)
Engineered for Performance & Longevity:
MMR's two-piece floating design allows the rotor and hat to expand independently as they heat up, minimizing thermal stress and the risk of cracking or warping. The lightweight construction reduces unsprung mass and rotational inertia, contributing to sharper handling and more responsive braking.
The rotors feature MMR’s signature groove pattern, which enhances initial bite and keeps the pad surface clear of dust and debris — ensuring consistent pedal feel and extended pad life.
Advanced Cooling System:
Each rotor includes 72 precision-engineered internal vanes designed to pull air through the disc from the center outward. This airflow acts as an internal pump, significantly improving cooling and reducing brake fade during high-load conditions.
Unlike OEM rotors, MMR’s setup includes dedicated left-hand and right-hand rotors to maintain consistent directional airflow and optimize thermal management under aggressive driving conditions.
Street-Ready & Track-Compatible:
These rotors are fully compatible with factory brake pads for daily and spirited driving. For those who frequent track days, a high-performance pad upgrade may be beneficial, but MMR rotors are engineered to work effectively with a wide range of pad compounds.
Note: Matching front rotors are available separately to complete your braking system upgrade.
