Girodisc 2-piece front rotors for every application in this range, in one listing. Choose your car in the Application drop-down, then choose Full rotors with hats (complete assemblies, ready to install) or Replacement rings only if you already run Girodisc hats.
Application guide
| Application | Full rotors (pair) | Rings only (pair) | Notes |
|---|---|---|---|
| 992 GT3 – iron brakes | A1-272 – $1,950 | D1-272 – $1,130 | Direct replacement, factory pads, no modifications. |
| 992 GT3 RS – iron brakes (36 mm thick) | A1-306 – $1,950 | D1-291 – $1,130 | 36 mm thick front rotor for the 992 GT3 RS. |
| 992 GT3 / GT3 RS with PCCB → iron conversion | A1-276 – $1,950 | D1-154 – $1,130 | Converts carbon-ceramic to iron on the factory calipers. Use the 991/992 GT3 iron-brake pad shape (PCCB pads are taller than this friction band). |
| 992.1 GT3 Cup | A1-287 – $1,750 | D1-287 – $1,030 | Replacement front rotors for the 992.1 GT3 Cup. |
| 992 Turbo, 992.1 Carrera S / 4S / GTS, 992.2 S / 4S / GTS with PCCB → iron conversion | A1-156 – $1,950 | D1-154 – $1,130 | 410 mm iron conversion on the factory PCCB calipers. Use the 991/992 GT3 & Turbo iron-brake pad shape. |
| 992.1 Carrera S / 4S, 992.2 Carrera / C4 / T – 350 mm iron (direct fit) | A1-032 – $1,350 | D1-032 – $880 | Direct bolt-on replacement for the factory 350 mm front rotors. No modifications. |
| 992.1 Carrera / C4 / T – 330 mm iron, upsized to 350 mm (spacers & bolts included) | A1-203 – $1,350 | D1-203 – $880 | Slightly larger than the factory 330 mm disc; caliper spacers and longer bolts are included to reposition the caliper. |
Correct fitment depends on the brake package your car left the factory with (rotor diameter, iron vs. PCCB / carbon-ceramic, caliper colour). If you are unsure, contact PHD Racing with your VIN before ordering and we will confirm the part number.
Girodisc 2-piece floating rotors
- Iron friction ring on a 6061-T6 aluminum hat – cuts unsprung and rotating weight vs. the one-piece factory disc.
- Curved, directional cooling vanes act as a centrifugal pump, pulling air through the disc under repeated hard stops.
- Pin-drive float system with anti-noise spring washers: the ring grows with heat and self-centers without the cold rattle of a race-style floating rotor.
- Rings cast from Girodisc's own high-carbon iron and machined in-house in Bellingham, WA; hats machined from US-sourced aluminum.
- Keeps the factory calipers, brake bias and ABS behaviour. Sold in pairs, directional (left/right).
- Serviceable: when the rings wear out, order the Replacement rings only variant and keep your Girodisc hats. Replacement rings fit Girodisc hats only.
Product photos are supplied by Girodisc and are representative of the product family; hat design and ring size vary by application.
