Girodisc BMW Brake Rotors & Discs

G8X Slotted Front Rotors Non-CCB

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T#:22789637

Part#: A1-282

In Stock at Vendor

$ 1,350.00 USD

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$ 1,350.00 USD

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BMW G8X Two-Piece Slotted Rear Brake Rotors (370x24mm)

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T#:29765778

Part#: A2-282

In Stock at Vendor

$ 1,350.00 USD

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$ 1,350.00 USD

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Reduce unsprung weight and increase braking performance!

Front 2-Piece Brake Rotors - Pair - 400mm

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T#:11268520

Part#: A1-220

In Stock at Vendor

$ 1,450.00 USD

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$ 1,450.00 USD

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The Girodisc system is a direct replacement iron rotor for the OEM Carbon disc, no modifications are necessary. The disc will bolt directly to the car and work with OEM calipers and pads perfectly. The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc. The rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads. Once the Girodisc system is in place, simply replace the cast iron rotor when needed.

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BMW E9X M3 GiroDisc 2 Piece Rotors - Front

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T#:29566632

Part#: A1-157

In Stock at Vendor

$ 1,250.00 USD

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$ 1,250.00 USD

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Rear 2-Piece Brake Rotors - Pair - 380mm

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T#:11268521

Part#: A2-220

In Stock at Vendor

$ 1,400.00 USD

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$ 1,400.00 USD

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The Girodisc system is a direct replacement iron rotor for the OEM Carbon disc, no modifications are necessary. The disc will bolt directly to the car and work with OEM calipers and pads perfectly. The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc. The rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads. Once the Girodisc system is in place, simply replace the cast iron rotor when needed.

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GiroDisc 345x28mm Two-Piece Slotted Front Rotors - E46 M3 ZCP/CSL ...

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T#:26671603

Part#: A1-012

In Stock at Vendor

$ 1,150.00 USD

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$ 1,150.00 USD

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GiroDisc presents its 2-piece rotors tailored for BMW's E46 M3 Competition Package (ZCP) and CSL models, providing a direct replacement for the stock 345mm rotors. These rotors redefine performance, weighing only 17.5 lbs per rotor, compared to the factory 19 lbs, resulting in a significant reduction of unsprung weight and rotational mass at the front axle.

Crafted from a proprietary high-carbon iron casting to GiroDisc’s exacting standards, these rotor rings offer unparalleled durability. Featuring 48 curved vanes acting as a centrifugal pump, they draw air through the hub for optimal cooling even during intense usage.

The 2-piece construction allows for a reusable hat, offering ease of maintenance. Replacement is simplified by attaching new rings (part number D1-012) to the existing hat.

Each essential component, from the hats to the rotor rings and drive pins, is meticulously crafted in-house at GiroDisc's Bellingham, WA facility, using domestically sourced materials. The hat is made from 6061-T6 aluminum with a sleek black anodized coating, while the drive pins are crafted from a robust steel alloy and plated with cadmium for enhanced corrosion resistance.

These rotors seamlessly integrate with common aftermarket caliper setups and stock sliding calipers found on ZCP and CSL models, including compatibility with Brembo calipers from Porsche 996 and Megane RS swaps.

Specifications:

Diameter: 345mm
Thickness: 28mm
Weight: 17.5 lbs per rotor assembly

With race-ready float ensured by spring clips and Belleville washers, these rotors deliver high performance on the track while maintaining street-friendly characteristics with no noise from loose hardware. Experience the pinnacle of braking excellence with GiroDisc's E46 M3 rotors.

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