Girodisc A1-220 Front 400mm 2-Piece Floating Slotted/Grooved Brake Discs/Rotors Pair for BMW M2 Competition/CS F87, M3 F80, M4 F82 F83 – Direct Fit 400x36mm Performance Track Day Vented Upgrade, OEM Caliper Compatible

Girodisc two piece grooved floating front rotors for BMW F87 M2 Competition, F80 M3, F82 F83 M4 - Part No. A1-220

Unlock confident, repeatable braking on fast road and track with this premium front rotor set from Girodisc. Designed for the F8x platform, these 400 mm split construction rotors bring sharper bite, rapid heat control and rock solid pedal feel while retaining your factory calipers and pad shape. Made in the USA with a proprietary cast iron ring and lightweight 6061-T6 aluminium hats, they cut unsprung mass and deliver outstanding thermal stability for the S55-powered BMW chassis.

Why enthusiasts choose this Girodisc front rotor kit

• Direct fit for the OE 400 x 36 mm iron front brake system on M2 Competition F87, M3 F80 and M4 F82 F83
• Two piece floating architecture for better heat management and consistent pedal travel under hard use
• Directional internal vanes act like a pump to move air through the disc for superior cooling
• Grooved faces help refresh pads, maintain friction and clean the contact surface during aggressive driving
• Protective zinc plating resists corrosion and keeps the rings looking smart behind your wheels
• Hats CNC machined from 6061-T6 aluminium to reduce rotational mass and improve response
• High strength plated drive pins with spring hardware to control noise when cold and allow controlled float when hot
• Serviceable design lowers running costs - replace the rings and reuse the hats when worn

Real world results you can feel

We run Girodisc on our own cars and have supplied and fitted countless sets for customers. Owners consistently report stronger initial response, excellent fade resistance on circuit days and dependable stopping power on fast B-road drives. It is a proven upgrade that inspires confidence without the expense of a full big brake kit.

What is included

• 1 x matched pair of Girodisc front two piece floating grooved rotors
• Pre-assembled with aluminium hats and floating hardware

Specifications

• Diameter: 400.0 mm
• Thickness: 36.0 mm new, 34.0 mm minimum
• Overall height: 65.5 mm
• Type: Two piece floating, vented with directional vanes
• Face: Grooved with protective zinc finish
• Materials: Proprietary cast iron rings, 6061-T6 aluminium hats
• Sold as a pair

Fitment

• BMW M3 F80 Saloon
• BMW M4 F82 Coupe
• BMW M4 F83 Convertible
• BMW M2 F87 Competition and M2 CS (S55)

Important: Intended for vehicles equipped with the original 400 x 36 mm iron front brake setup. If your car has the carbon ceramic package or a different front brake size, please check with us before ordering.

Compatibility check before dispatch

For absolute peace of mind we verify compatibility prior to shipping. Add your UK registration or the last 7 digits of your VIN at checkout so we can confirm fitment for your F80 F82 F83 or F87.

Professional fitting and support

Installation available at MJ Modifications in Warwickshire. For a fitting quote, email info@mjmodifications.co.uk and our team will be happy to help.

Part number

A1-220

Complete the setup

Match these fronts with the corresponding Girodisc rear two piece rotors for a balanced upgrade across the axle.

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