Girodisc 380mm Front 2-Piece Floating Rotors for BMW F8X M2, M3 & M4 (Blue Calipers)

Girodisc 380mm Front Floating Brake Rotors – BMW F8X M2, M3 & M4

Take your BMW's braking performance to the next level with the Girodisc A1-186 380mm Front 2-Piece Floating Rotors. Designed as a direct replacement for the factory front brake discs on F8X models equipped with blue M Sport brake calipers, these premium rotors deliver outstanding stopping power, improved cooling, and reduced rotating mass for both spirited road driving and demanding track use.

Unlike oversized big brake kits, Girodisc's lightweight two-piece rotor system retains the factory calipers, brake bias and ABS calibration while significantly improving heat management and braking consistency. Installation is completely bolt-on with no modifications required.

Motorsport-Inspired Two-Piece Construction

Each Girodisc rotor combines a precision CNC-machined 6061-T6 aircraft-grade aluminium centre hat with a proprietary high-carbon cast iron friction ring. This lightweight construction reduces unsprung and rotational weight while delivering exceptional strength and thermal stability under repeated heavy braking.

The rotor ring features a curved directional vane design, engineered to maximise airflow through the disc. Acting as a centrifugal air pump, the vane configuration efficiently removes heat from the braking surface, reducing brake fade and helping maintain consistent pedal feel during high-performance driving.

Advanced Floating Rotor Technology

The Girodisc floating assembly utilises 10 high-strength alloy steel drive pins that securely connect the rotor ring to the aluminium hat while allowing controlled radial and axial movement.

This floating design offers numerous performance benefits:

• Allows thermal expansion without stressing the rotor
• Reduces the likelihood of warping and cracking
• Maintains consistent brake pedal feel
• Improves rotor alignment between the brake pads
• Delivers reliable braking performance under repeated heavy use

Special anti-noise spring hardware is incorporated into the mounting system to eliminate the rattling often associated with floating rotors while still allowing unrestricted thermal expansion during aggressive driving.

Serviceable Design for Lower Running Costs

Unlike conventional one-piece brake discs, Girodisc's modular design allows the cast iron friction rings to be replaced independently once worn. The original aluminium hats can be reused, reducing long-term maintenance costs while preserving the benefits of the lightweight two-piece rotor assembly.

This serviceable design makes Girodisc rotors a popular choice for enthusiasts, track day drivers and professional motorsport teams alike.

Features

• Genuine Girodisc A1-186 front rotor kit
• 380mm front rotor diameter
• Direct bolt-on replacement for OEM front brake discs
• Designed for BMW F8X models with Blue brake calipers
• Lightweight 6061-T6 aircraft-grade aluminium hats
• Proprietary high-carbon cast iron friction rings
• Curved directional cooling vane design
• Fully floating two-piece rotor construction
• 10 high-strength alloy steel floating drive pins
• Anti-noise spring hardware for quiet operation
• Maintains factory brake bias and ABS functionality
• Replaceable friction rings for reduced servicing costs
• Ideal for fast road, track day and motorsport use
• Sold as a pair

Vehicle Fitment

Compatible with BMW models equipped with Blue factory brake calipers and iron brake discs, including:

• BMW F87 M2 (N55)
• BMW F80 M3
• BMW F82 M4
• BMW F83 M4 Convertible

Important:

• Not compatible with M2 Competition models.
• Not suitable for vehicles equipped with Gold Carbon Ceramic Brake (CCB) calipers.
• If your vehicle has Red, Silver or Gold factory calipers, a different Girodisc rotor kit is required. Please verify your brake system before ordering.

Why Choose Girodisc?

Girodisc is trusted worldwide for producing premium motorsport-inspired brake components that combine OEM fitment with race-proven engineering. Their two-piece floating rotor systems provide improved cooling, lower weight, exceptional durability and long-term serviceability without compromising factory braking balance.

Whether you're upgrading your daily-driven BMW, preparing for track days or building a dedicated performance car, Girodisc front rotors deliver the confidence and consistency needed under the toughest braking conditions.

Package Contents

• 2 × Girodisc 380mm Front Floating Rotors
• CNC-machined aluminium centre hats (pre-assembled)
• Floating mounting hardware
• Ready for installation