D1-220 Girodisc BMW F8X, G8X 400mm Front Replacement Rings
Upgrade the stopping power of your BMW M car with Girodisc D1-220 400mm front replacement rings. These precision-engineered rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Cast from Girodisc’s proprietary high-carbon iron alloy, they deliver outstanding heat management, fade resistance, and consistent braking response for street, track, or competition use.
Vehicle Fitment
Compatible with:
• BMW F80 M3 / F82 M4 / F83 M4 Convertible (front)
• BMW G80 M3 / G82 M4 / G87 M2 (front)
Note: Designed exclusively for Girodisc 400mm two-piece front rotor systems. Not compatible with OEM one-piece or carbon-ceramic rotors.
Features
• Sold as a left/right pair with complete floating hardware kit
• Direct replacements for Girodisc 400mm two-piece front rotors
• CNC-machined from high-carbon cast iron for superior heat capacity
• Directional curved vanes improve airflow and cooling
• Maintains factory brake bias and ABS calibration
• Precision-balanced and track-ready
• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands
Specifications
• Diameter: 400mm
• Position: Front
• Material: High-carbon cast iron
• Mount type: Floating two-piece system
• Includes: Two rotor rings and new hardware kit
• Sold/priced per pair
Girodisc D1-220 BMW Front Replacement Ring FAQs
Can I use these with BMW’s carbon-ceramic brake package? No. These are for Girodisc steel rotor conversions only and will not fit OEM carbon-ceramic hats.
Do these work with factory M compound calipers? Yes. The D1-220 rings maintain exact rotor offset and diameter to work perfectly with OEM four- and six-piston M calipers.
Are they quieter than stock rotors? Yes. The Girodisc floating design allows better heat expansion control, reducing cracking noise and vibration over time.
What are the advantages over BMW’s OEM rotors? Girodisc rotors are lighter, rebuildable, and deliver superior thermal consistency — ideal for repeated hard stops at the track.
Enhance your BMW M’s braking performance with Girodisc D1-220 400mm front replacement rings — the ultimate upgrade for precision, endurance, and smooth braking under pressure.
