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These GiroDisc replacement rotor rings service the exact hat, diameter, thickness, annulus, and mounting interface identified below. Similar-looking rings are not interchangeable, so every dimension and the required hat system must be confirmed before ordering.
Key Features
- High-Carbon 72 Series Alloy: Stress-relieved and cryogenic treated for dimensional stability resists warping at high temperatures.
- Lightweight Design: Each ring weighs 6.8 lbs versus OEM 9.5 lbs per side shedding 5.4 lbs total unsprung mass per axle.
- Precision Machined: Balanced to 0.5g tolerances ensure vibration-free operation with stock or aftermarket pads.
- Slotted Surface: Narrow slots clear gases water and debris for immediate pad bite and reduced fade during track or spirited road use.
- Replaceable Friction Ring: Modular design allows ring swaps without new hats extending rotor life cost-effectively.
- CNC machined in USA from aerospace-grade materials.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2004-2017 | Subaru | WRX STI | Rear replacement rings for compatible GiroDisc hats |
| 2020 | Subaru | WRX | Performance Package or Series.White with Brembo brakes |
Specifications
| Brand | GiroDisc |
|---|---|
| Manufacturer Part Number | D2-007 |
| Product Type | Replacement Brake Rotor Rings |
| Position | Rear |
| Fitment Type | Vehicle specific |
What's Included
The replacement ring set and only the mounting hardware GiroDisc states is supplied for this exact part number
About GiroDisc
GiroDisc designs and manufactures serviceable two-piece brake rotors, replacement rings, and related brake components in Bellingham, Washington. Selection remains exact-part-number and brake-configuration specific.
Related GiroDisc Products
- GiroDisc 2020 Subaru WRX (w/Brembo Calipers Performance Pkg) Slotted Front Rotors
- GiroDisc 2020 Subaru WRX (w/Brembo Calipers Performance Pkg) Slotted Front Rings
- GiroDisc 04-07 Subaru Impreza WRX STI (Requires Trimmed Rear Pads) Slotted Rear Rotors
Browse the GiroDisc collection for related brake components.
Frequently Asked Questions
Will this fit my 2004-2017 Subaru WRX STI?
That year, make, and model range is listed, but the exact trim, axle position, rotor dimensions, caliper, brake package, and every application note must also match.
Will these rings fit factory or another brand',s hats?
Do not assume so. Most GiroDisc replacement rings are designed only for the specified GiroDisc hats unless the listing explicitly identifies a factory, Brembo, StopTech, or PFC interface.
Should the old mounting hardware be reused?
Use only the hardware method GiroDisc specifies for this exact ring. Some kits include new hardware, while factory-hat applications may require reuse or separately sourced hardware.
Installation Instructions
Replacement-ring service involves safety-critical brake hardware. Follow the current GiroDisc assembly instructions, confirm the exact hat interface and ring direction, use only approved hardware, torque fasteners in the required sequence, check runout and clearance, and complete the specified bedding process.
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