Girodisc BMW F8X M2, M3, M4 Rear Rotors
Unlock the full braking potential of your BMW with Girodisc’s 368mm two-piece rear rotor upgrade for the F8X M2, M3, and M4. These lightweight, high-performance rotors are a direct bolt-on replacement for factory units, delivering sharper response, reduced fade, and better cooling whether on the street or at the track.
Precision Engineering Meets Race-Proven Performance
Each Girodisc rotor is meticulously crafted in the USA using a floating two-piece design. The hat section is CNC-machined from 6061-T6 aircraft-grade aluminum, while the rotor rings are cast from Girodisc’s proprietary high-carbon iron alloy. The curved vane internal design works as a centrifugal pump, pulling air through the rotor to maximize cooling efficiency during repeated high-speed stops.
Features
• Direct replacement for OEM 368mm rear rotors – no modifications needed
• Lightweight 6061-T6 billet aluminum hats with anodized finish
• Proprietary cast iron rotor rings, cast and machined entirely in the USA
• Floating mount system allows controlled expansion for improved durability
• Anti-noise spring washers eliminate rattle while maintaining proper float
• 48 curved directional vanes for superior cooling and consistent performance
• Reduces unsprung and rotational weight for enhanced handling
• Sold/priced per pair
Vehicle Fitment
BMW M2 (F87, non-Competition)
BMW M3 (F80, all trims)
BMW M4 (F82/F83, all trims)
Compatible with vehicles using factory 368mm rear iron rotors and blue calipers. Note: M2 Competition and models with carbon-ceramic brakes require a different rotor size.
Girodisc A2-186 Rear Rotor FAQs:
Are these rotors compatible with the M2 Competition? No. The M2 Competition uses a larger 380mm rotor setup. These rotors fit the standard M2 with 368mm rears.
Do I need new pads with these rotors? It’s recommended to install new pads when upgrading rotors to ensure optimal bedding and performance.
Will these affect ABS or traction control? No. Girodisc rotors are manufactured to precise OEM dimensions, ensuring full compatibility with all factory electronic systems.
Are Girodisc rotors rebuildable? Yes. Once installed, you can replace just the iron rings when worn—no need to purchase complete new assemblies.
Enhance your BMW’s braking confidence and precision with Girodisc 368mm rear rotors. Designed for both daily driving and track use, they deliver performance you can feel every time you hit the brakes.
