Girodisc BMW F8X 368mm Rear Replacement Rings
Bring your BMW’s braking performance back to peak condition with Girodisc D2-186 rear replacement rings. Designed as direct replacements for Girodisc two-piece 368mm rotors, these precision-engineered rings restore the balance, cooling, and bite that performance driving demands—whether on the street or at the track.
Vehicle Fitment
Compatible with:
• BMW F80 M3 (2015–2018)
• BMW F82 M4 (2015–2020)
• BMW F83 M4 Convertible (2015–2020)
• BMW F87 M2 Competition (2019–2021)
• BMW F87 M2 CS (2020–2021)
Note: For vehicles originally equipped with iron rotors. These rings attach directly to Girodisc aluminum hats using the included floating hardware kit.
Precision-Machined for High Performance
Each Girodisc rotor ring is cast from a proprietary high-carbon iron alloy and machined entirely in the USA. The directional curved vanes draw cooling air through the rotor for exceptional temperature control under hard braking. This design minimizes fade, maintains pedal feel, and extends pad life—perfect for both road and track environments.
Features
• Direct replacements for Girodisc 368mm rear rotors
• Compatible with BMW F8X M3/M4 and F87 M2 Competition & CS
• Proprietary high-carbon cast iron construction
• Directional curved vane design for optimal cooling
• Machined, balanced, and finished in the USA
• Includes complete floating hardware kit
• Sold/priced per pair
Specifications
• Diameter: 368mm
• Position: Rear
• Material: High-carbon cast iron
• Includes: Two rotor rings and new hardware kit
• Made in the USA
• Sold/priced per pair
Girodisc D2-186 Replacement Ring FAQs
Do these fit factory BMW rotors? No. These are designed exclusively for Girodisc two-piece rotor assemblies and will not fit OEM rotors.
Are these track-ready? Yes. Girodisc rotors are engineered to deliver consistent performance and cooling during high-speed, high-temperature driving.
Is new hardware included? Yes. Each pair ships with fresh floating hardware for secure installation.
When should I replace the rings? Replace when the rotor surface is below minimum thickness or cracks extend to the outer edge.
Rebuild your braking system with Girodisc D2-186 rear replacement rings—precision-engineered for BMW M performance and proudly made in the USA.
