GiroDisc BMW F8X M2, M3, M4 380mm Front Rotors - GiroDisc A1-186
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GiroDisc BMW F8X M2, M3, M4 380mm Front Rotors

GiroDisc
GIRA1-186
A1-186
Brake Rotors - 2 Piece
13 Units In Stock
$ 1,349.99
$ 1,349.99

This GiroDisc two-piece brake rotor set is engineered for the exact brake configuration shown below. Its reusable aluminum hats and replaceable cast-iron friction rings reduce service waste while preserving the factory caliper relationship when the application notes are followed.

Key Features

  • Two-Piece Design: 6061-T6 aluminum hat with high-carbon ductile iron friction ring reduces rotating mass by 4.8 lbs per rotor compared to OEM 29.3 lbs.
  • Precision Engineering: 380mm OD 36mm thickness 82mm height with floating hardware for thermal expansion and zero distortion.
  • Corrosion Protection: 300 series stainless steel drive buttons and bushings ensure long-term durability in harsh conditions.
  • Direct Replacement: Bolt-on fit retains OEM caliper pads and hardware compatibility for 2014-2020 F8X chassis.
  • 72 Curved Vane Slotted Rotor: Directional slots clear brake gases improve pad bite and manage heat for repeated high-performance stops.
  • Includes all Girodisc hardware bolts and bushings for complete assembly.

Fitment

Years Make Model Application
2016-2021 BMW M2 F87 exact brake package required
2015-2018 BMW M3 F80 exact brake package required
2015-2020 BMW M4 F82 or F83 exact brake package required

Specifications

Brand GiroDisc
Manufacturer Part Number A1-186
Product Type Two-Piece Brake Rotor Set
Position Front
Fitment Type Vehicle specific

What's Included

The axle set, assembled hats and friction rings, and only the hardware GiroDisc supplies for this exact part number

About GiroDisc

GiroDisc designs and manufactures serviceable two-piece brake rotors, replacement rings, and related brake components in Bellingham, Washington. Selection remains exact-part-number and brake-configuration specific.

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Frequently Asked Questions

Will this fit my 2016-2021 BMW M2?
That year, make, and model range is listed, but the exact trim, axle position, rotor dimensions, caliper, brake package, and every application note must also match.

Can I use my factory calipers and brake pads?
Many GiroDisc rotor sets retain the factory calipers, but some iron conversions require a different pad shape or compound. Follow the exact application note for this part number.

Are these rotors sold individually or as a pair?
GiroDisc commonly sells these assemblies as an axle pair, but confirm the quantity shown for this exact part number before ordering.

Installation Instructions

Follow the current GiroDisc instructions and vehicle service information. Confirm the brake package and rotor direction, clean mounting surfaces, inspect hubs and calipers, torque all fasteners to the specified values, verify clearance, and complete the required pad-bedding procedure before normal use.

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