Girodisc 316x20 Rear Brake Rotors for Subaru BRZ - Impreza WRX STI (2008–2017) - WRX w and Brembo calipers (2020)

The Girodisc D2-095 rear replacement braking surfaces (316 × 20 mm) allow you to replace the braking surfaces on your GIRODISC disc-on-cup brake system for your Subaru BRZ, Subaru Impreza WRX STI (2008–2017), Subaru WRX W, and Brembo calipers (2020), while retaining the compatible disc-on-cup assemblies after inspection. These cast iron pads maintain the floating mounting’s functionality and facilitate maintenance of a braking system subjected to repeated stress. Sold in pairs, without rotors.

The curved internal cooling fins channel air through the disc to dissipate heat during repeated braking. The floating mounting reduces stress caused by thermal expansion differences between the rotor and the caliper housing and helps the rotor center itself between the brake pads, maintaining consistent contact even when hot.

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

Specifications for Girodisc D2-095 tracks for compatible vehicles

• Brand: Girodisc
• PartNumber: D2-095
• Position: rear
• Sizes (diameter × thickness): 316 × 20 mm
• Vehicles and models: Subaru BRZ; Subaru Impreza WRX STI (2008–2017); Subaru WRX with Brembo calipers (2020)
• Braking surface: high-resistance cast steel
• Packaging: pair of rotors, one left and one right; rotors not included.
• Compatible rotors: rotors from the corresponding Girodisc set; check by part number; not universally compatible with OEM rotors.
• Mounting hardware: mounting kit included; replace the entire disc-to-hub mounting assembly during reinstallation.
• Related catalog part: A2-095.
• Internal ventilation: directional curved fins
• Minimum thickness: 18 mm
• Manufacturing of main components: United States

Vehicles compatible with Girodisc part number D2-095

• Subaru BRZ
• Subaru Impreza WRX STI (2008–2017)
• Subaru WRX with Brembo calipers (2020)

• Subaru BRZ: For Brembo calipers; rear pad brackets must be modified.
• Subaru BRZ: The metal brake pads on the OEM pads and certain aftermarket brake pads require adjustment to clear the brake disc mounting while retaining the parking brake. It is essential to follow the instructions and use pre-prepared brake pads when available.
• Subaru Impreza WRX STI (2008–2017): Rear pad brackets require modification.
• Subaru Impreza WRX STI (2008–2017): The metal brackets on the original equipment and certain aftermarket brake pads require adjustment to clear the brake disc mounting while retaining the parking brake. Be sure to follow the instructions and use pre-prepared brake pads when available.
• Subaru WRX w and Brembo calipers (2020): Performance Pack and White Series.
• Subaru WRX w and Brembo calipers (2020): The metal brake pads on the OEM brake pads and certain aftermarket pads require adjustment to clear the brake disc mounting while maintaining the parking brake. It is essential to follow the instructions and use pre-prepared pads when available.

Each application is specific to its brake system, calipers, and any requirements for brake pads or spacers. Check these requirements before ordering.

Girodisc D2-095 Mounting Requirements

• Subaru BRZ: For Brembo calipers; rear pad brackets must be modified.
• Subaru BRZ: The metal brake pads on the original equipment and certain aftermarket brake pads require adjustment to clear the brake disc mounting while retaining the parking brake. It is essential to follow the instructions and use pre-machined brake pads when available.
• Subaru Impreza WRX STI (2008–2017): Rear pad brackets require modification.
• Subaru Impreza WRX STI (2008–2017): The metal brake pads on the original equipment and certain aftermarket brake pads require adjustment to clear the brake disc mounting while retaining the parking brake. Be sure to follow the instructions and use pre-prepared brake pads when available.
• Subaru WRX w and Brembo calipers (2020): performance pack and White series.
• Subaru WRX w and Brembo calipers (2020): The metal brackets on the OEM brake pads and certain aftermarket brake pads require adjustment to clear the brake disc mounting while maintaining the parking brake. It is essential to follow the instructions and use pre-prepared brake pads when available.

Brake Pads and Brake Systems for Compatible Vehicles

Choose brake pads whose shape is compatible with the calipers, track, and/or D2-095 rotor, 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 a mounting compatible with the original hydraulic system.

Maintenance of the Girodisc mounting on compatible vehicles

When worn, replace the pads with the part number compatible with your existing rotors. Reusing a rotor 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 D2-095 for compatible vehicles

What are the sizes of the D2-095 tracks for my vehicle? The part number shown measures 316 × 20 mm and mounts to the rear axle. The track height, mounting bracket, and cups must also be compatible with the mounting.

Is the product sold in pairs? Yes. It includes a left and a right component for the same axle. The brake shoes are not included.

Do I need to replace my vehicle’s brake pads?Yes. Always install new brake pads with new brake discs or new braking surfaces. Use a compound suitable for cast iron and your intended use. The metal brackets on the original brake pads and on some aftermarket pads require adjustment to clear the brake disc mounting while maintaining the parking brake. It is essential to follow the instructions and use pre-prepared pads when available.

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 this 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 discs, and an instruction manual for installing new tracks on existing bowls. Consult the document that applies to your specific task before you begin.

Key Features of the Girodisc D2-095

• 316 × 20 mm size for rear braking on compatible vehicles.
• Internal ventilation via curved fins to dissipate heat.
• Replaceable tracks to maintain a two-part mounting.
• Left/right pair identified for mounting.
• Compatible with existing aluminum brake rotors to preserve the benefits of the two-piece mounting on unsprung and rotating masses.