BMW M3 (2021-) G80 Girodisc 370mm 2 Piece Rear Rotors

Girodisc Rear 2-Piece Rotors – BMW G87 M2 / G80 M3 / G82 M4 (A2-282)

Description

Upgrade your rear braking performance with the Girodisc A2-282 2-Piece Floating Rear Rotor Set, designed specifically for the BMW G87 M2, G80 M3, and G82 M4 platforms. Engineered for high-performance street driving and track use, these lightweight rotors replace the factory cast-iron units with a modular, two-piece design that reduces unsprung mass and improves cooling.

Girodisc rotors are CNC-machined in the USA using premium materials, combining a high-carbon alloy cast iron rotor ring with a billet 6061-T6 aluminum center hat. The result is a high-performance braking solution that enhances handling, reduces fade, and offers long-term cost savings with replaceable rotor rings.

Key Features

• ✅ Fitment:

  • BMW G87 M2 (2023+)

  • BMW G80 M3 (2021+)

  • BMW G82 M4 (2021+)

• 🔧 Rotor Type: Rear, 2-piece floating design

• 📏 Rotor Size: OEM-matched 370mm x 24mm

• ⚙️ Construction:

  • High-carbon cast iron rotor rings

  • CNC-machined 6061-T6 billet aluminum hats (black anodized)

• 🔩 Mounting: Floating bobbin drive system with anti-noise spring washers

• ❄️ Cooling: Directional internal vanes for superior heat dissipation

• 🇺🇸 Made in the USA

Performance Benefits

• 🏁 Track-Ready Performance: Improved heat management and reduced fade under repeated heavy braking

• 💨 Weight Reduction: Significantly lighter than OEM one-piece rotors, reducing rotational and unsprung mass

• 🔧 Serviceability: Rebuildable design allows the rotor rings to be replaced independently of the hat

• 💎 Perfect OEM Fitment: Direct bolt-on with factory calipers and hardware

In the Box

• 2x Girodisc A2-282 Rear 2-Piece Rotors (Left & Right)

• Pre-installed hardware

• Installation guide

Note:

• Designed for use with OEM calipers

• Recommended to pair with high-performance brake pads and stainless steel lines for maximum braking potential

• Front rotor set (Girodisc A1-280) available separately