Push a JCW hard on track and the one-piece factory front discs start to judder, glaze and crack. The MMX Performance 2-Piece 335mm Front Rotor Set keeps the OEM JCW diameter and bolts straight on, but swaps the solid disc for a true floating rotor built for repeated heavy stops.
Your factory calipers stay, so the upgrade is simple and the pedal feel stays consistent lap after lap.
MINI JCW 2-Piece Floating Front Rotors
A proprietary high-carbon iron friction ring with directional grooves rides on a CNC-machined 6061-T6 aluminum hat through floating bobbins. The ring expands freely under heat instead of warping, and cooling improves by up to 30% over OEM.
What's Included
- 1 x pair of 2-piece floating front rotors, left and right directional (335 x 30mm)
- Floating bobbin hardware, pre-installed
- All required fitting hardware
Brake pads not included.
Key Features
- 335mm x 30mm, matches the OEM JCW front diameter
- 2-piece floating construction with bobbin mounting
- High-carbon iron ring with directional grooves
- CNC-machined 6061-T6 aluminum center hat
- Up to 30% improved cooling efficiency over OEM
- Part number: MMR31-1410F
Vehicle Fitment
Fits MINI F-Series John Cooper Works models with the OEM 335mm front brake:
- MINI F55 / F56 / F57 John Cooper Works (2015-2024)
Installation Notes
Rotors are directional, left and right. Professional installation is recommended, followed by pad bedding.
- Remove the front calipers, carriers and OEM rotors.
- Fit each MMX rotor to the correct side, checking groove direction.
- Reinstall the calipers with fresh pads and torque to MINI specification.
- Bed in the pads before hard use.
