GiroDisc 2-Piece 400mm Slotted Front Rotors - BMW M3 / M4 (G8X, carbon ceramics)

These GiroDisc rotors replace the factory 400 mm carbon ceramic front discs on G8X cars with fully floating two-piece iron rotors. They bolt up to the factory calipers, and the only other change is the pads. Many owners go this way to run cheaper consumables on track rather than wearing down expensive ceramics.

What you get

• High-carbon iron rotor rings cast to GiroDisc's own specification for durability under hard use.
• 72 curved internal vanes that pump air from the hub outward to cool the ring.
• 6061-T6 aluminum hats with a black anodized finish. The hat is reusable, so later you only buy new rings.
• Cadmium-plated high-strength steel drive pins for corrosion resistance.
• Made in Bellingham, Washington, with hats, rings and pins produced in GiroDisc's own shop from US-sourced material.

Good to know

• For cars that came with factory carbon ceramic brakes. You will need pads in the iron-rotor shape that fit the carbon ceramic calipers.

Brand: Girodisc · Part #: A1-322

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.