Girodisc Rear Brake Discs 380x34 for Ferrari 458 Challenge (2010–2016) – 488 Challenge (2015–2019)

The Girodisc A2-183 rear brake discs, measuring 380 × 34 mm, enhance braking endurance during sustained use on the Ferrari 458 Challenge (2010–2016) and Ferrari 488 Challenge (2015–2019). Their cast-iron rotors and aluminum hubs form a floating assembly designed to manage thermal stresses and facilitate the replacement of rotors under wear. Sold in pairs, with one left-side and one right-side rotor.

These discs are intended for the rear axle of compatible vehicles in the configuration specified below. They retain the compatible mounting calipers; any required spacers and brake pad specifications must be followed.

The curved internal cooling fins channel air through the rotor to dissipate heat during repeated braking. The floating mounting minimizes stresses caused by thermal expansion differences between the rotor and the housing and helps the rotor center itself between the brake pads, maintaining consistent contact under heat.

The hub is made of 6061-T6 aluminum. The high-strength steel drive pins are cadmium-plated to resist corrosion. Spring washers minimize cold-mounting noise while allowing the necessary compression for the floating mount.

New brake pads must be installed with new rotors or brake discs. Their shape and compound must match the mounting, cast iron, and intended use; follow the specific requirements for this part number and perform the prescribed break-in procedure.

On compatible vehicles originally equipped with carbon-ceramic rotors, this pair provides a conversion solution to high-quality cast-iron track rotors. It allows you to remove and store the expensive original carbon-ceramic rotors to preserve them during heavy-duty use, while reusing compatible calipers. Use new brake pads suitable for cast iron and adhere to the pad shapes and any spacers specified by the part number. Replaceable brake pads reduce the cost of replacing braking surfaces in heavy-duty applications and offer a choice of linings to tailor bite and pedal reaction to the intended use.

Specifications for Girodisc A2-183 rotors for compatible vehicles

• Brand: Girodisc
• PartNumber: A2-183
• Position: rear
• Sizes (diameter × thickness): 380 × 34 mm
• Vehicles and models: Ferrari 458 Challenge (2010–2016); Ferrari 488 Challenge (2015–2019)
• Braking surface material: high-resistance cast steel
• Packaging: Pair of complete rotors, one left and one right with disc bells.
• Hub: 6061-T6 aluminum
• Construction: two-piece floating mounting design
• Catalog part number: D2-183. Verify compatibility with the caliper generation before replacement.
• Internal ventilation: directional curved fins
• Number of internal fins: 72
• Minimum thickness: 32 mm
• Manufacturing of main components: United States

Vehicles compatible with Girodisc part number A2-183

• Ferrari 458 Challenge (2010–2016)
• Ferrari 488 Challenge (2015–2019)

• Ferrari 458 Challenge (2010–2016): Use D1001-shaped brake pads with a compound designed for cast-iron rotors. The original carbon-ceramic brake pads are not suitable.
• Ferrari 488 Challenge (2015–2019): Use D1001-shaped brake pads with a compound designed for cast-iron rotors. The original carbon-ceramic brake pads are not suitable.

Each application is subject to its specific brake system configuration, calipers, and any requirements for brake pads or spacers. Please verify these conditions before ordering.

Girodisc A2-183 Mounting Requirements

• Ferrari 458 Challenge (2010–2016): Use D1001-shaped brake pads with a compound designed for cast-iron rotors. The original carbon-ceramic brake pads are not suitable.
• Ferrari 488 Challenge (2015–2019): Use D1001-shaped brake pads with a compound designed for cast-iron rotors. The original carbon-ceramic brake pads are not suitable.

Brake Pads and Braking Systems for Compatible Vehicles

Choose brake pads whose shape is compatible with the calipers, track, and/or A2-183 rotors, and whose compound is suitable for sport driving or track use. The Endless, pagid Racing, or Ferodo Racing ranges may be considered after verifying the appropriate part number.

For intensive use, we recommend compatible aviation-grade flexible hoses and high-performance brake fluid that meets the vehicle’s specifications, along with proper bleeding and fluid replacement. This recommendation complements the mounting, which is compatible with the original hydraulic system.

Maintenance of the Girodisc mounting on compatible vehicles

Replacing only the pads helps keep the calipers in good condition. Reusing a caliper for up to three pad replacements is subject to inspection of its condition, its mounting components, and the mounting instructions; this number does not constitute a guaranteed service life. Use a new mounting component each time you replace the pads.

FAQ — Girodisc A2-183 for Compatible Vehicles

What are the sizes of the A2-183 discs for my vehicle? The part number shown measures 380 × 34 mm and is mounted on the rear axle. The diameter alone is not sufficient: also check the brake system type and mounting requirements.

Is the product sold in pairs? Yes. It includes a left and a right disc for the same axle. Both discs come with their disc bells.

Do I need to replace the brake pads on my vehicle?Yes. Always install new brake pads with new rotors or new brake pads. Use a compound suitable for cast iron and your use. Use D1001-shaped brake pads with a compound designed for cast iron braking surfaces. The original carbon-ceramic brake pads are not suitable.

How do I identify the left and right sides? Girodisc rotors come with a label attached to each rotor: LEFT for the left side and RIGHT for the right side, as viewed from the direction of travel. On a left-hand-drive vehicle, “LEFT” corresponds to the driver’s side and “RIGHT” to the passenger side. Follow these labels and the instructions. On models with curved internal fins, the rolling direction depends on this internal ventilation; the surface grooves alone are not sufficient to determine the side.

How do I break in the mounting on my vehicle? Follow the Girodisc procedure and the brake pad manufacturer’s instructions to build up an even transfer ply. The PDF documents below detail installation and break-in.

PDF Documents for Mounting and Break-in

We have included two PDF documents below: an instruction manual for installing and breaking in the rotors, and an instruction manual for installing new tracks on existing rotors. Consult the document that applies to your specific task before you begin.

Key Features of Girodisc A2-183 Bowl Brake Discs

• 380 × 34 mm size for rear braking on compatible vehicles.
• 6061-T6 aluminum rotor and floating mount to manage thermal stresses.
• Internal ventilation via curved fins to dissipate heat.
• Replaceable brake pads to maintain a two-piece mounting.
• Left/right pair identified for mounting.
• Aluminum housings to control the unsprung mass and rotating mass of the conversion kit.