Do the GiroDisc Porsche 992 GT3 rear rotors fit the GT4 RS?

Yes. The GiroDisc Porsche 992 GT3 rear rotors (A2-272) are confirmed fitment for the 992 GT3, GT3 RS, and 982 718 GT4 RS — all sharing the same rear rotor specification.

What are the benefits of 2-piece Porsche 992 GT3 rear rotors over OEM single-piece?

The GiroDisc Porsche 992 GT3 rear rotors use a 2-piece fully floating design that allows the iron ring to expand thermally without distorting the aluminum hat, maintaining dimensional stability and consistent pedal feel across repeated hard stops. The curved vane design also forces active cooling air through the disc, providing better thermal management than standard vane designs under track use.

What happens when the GiroDisc Porsche 992 GT3 rear rotor rings wear out?

When the rings wear out, only the rings need replacing — not the full assembly. Replacement rings (D2-272) bolt onto the existing reusable aluminum hat, making ongoing maintenance significantly more cost-effective than replacing full single-piece rotors.

Is there a matching front rotor for the Porsche 992 GT3?

Yes. GiroDisc offers two front rotor options for the 992 GT3 — A1-272 (standard hat) and A1-306 (36mm hat). Confirm your hat specification before ordering the matching front set.

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Description

GiroDisc 2-Piece Rear Rotors for 992 Porsche 911 GT3 and GT4 RS

Porsche 992 GT3 rear rotors from GiroDisc are a 2-piece, fully floating direct replacement for the OE rear disc on the 992 GT3 and GT4 RS; no modifications required; works with unmodified factory pads and factory calipers; bolts directly to the car. The GiroDisc Porsche 992 GT3 rear rotors are built to GiroDisc’s own metallurgical and engineering specifications across every component, manufactured in-house at their facility in Bellingham, WA, from domestically sourced materials.

Why Upgrade to GiroDisc Porsche 992 GT3 Rear Rotors?

The GiroDisc Porsche 992 GT3 rear rotors are machined from a proprietary high-carbon iron casting formulated to GiroDisc’s own specification, not an off-the-shelf casting, resulting in a rotor that sustains consistent friction characteristics under sustained hard use. The curved vane design is developed in racing to act as a centrifugal pump, forcing cooling air through the disc for active thermal management under repeated hard braking. The 2-piece fully floating design utilizes 12 high-strength alloy steel drive pins manufactured in-house to GiroDisc’s own specifications and cadmium-plated for long-term corrosion resistance that take the braking load while maintaining axial and radial float between the hat and disc. Anti-noise spring washers on the rotor side allow the rotor to grow with heat expansion while eliminating the rattle and noise associated with floating rotors, and the float allows the rotor to self-center between the pads. When the disc wears out, replace only the rotor ring; the aluminum hat is reusable, keeping long-term running costs well below full single-piece rotor replacement.

Porsche 992 GT3 Rear Rotors: Construction and Materials

The central hat section of the GiroDisc Porsche 992 GT3 rear rotors is machined from 6061-T6 aircraft-specification aluminum sourced in the USA, finished in black anodize. The disc is made from GiroDisc’s own proprietary cast iron, poured in the USA and machined from start to finish in-house at GiroDisc’s Bellingham, WA facility. Drive pins are class 12.9 cap-screwed with hardened washers and cadmium-plated high-strength alloy steel, manufactured in-house to GiroDisc’s own specifications.

Features

Direct OE replacement for the 992 GT3 and GT4 RS rear disc no modifications required
Works with unmodified factory pads and factory calipers
2-piece fully floating design with 12 high-strength alloy steel drive pins
Proprietary high-carbon iron rings poured and machined in-house in the USA
Curved vane design acts as a centrifugal pump for active cooling
Anti-noise spring washers eliminate rattle; rotor self-centers between pads
Reusable 6061-T6 aluminum hat black anodized finish
Drive pins cadmium-plated for long-term corrosion resistance
Replacement rings available separately (D2-272)

Applications

Porsche 911 GT3: 992 | 2022-present
Porsche 911 GT3 RS: 992 | 2023-present
Porsche 718 GT4 RS: 982 | 2022-present

Notes

Sold and priced per pair
Direct OE replacement no modifications required. Works with factory pads and calipers.
Replacement rings available separately (D2-272)
Matching front rotors available: A1-272 (992 GT3 standard hat) and A1-306 (992 GT3 36mm hat)
Stock photography may not depict actual product

Frequently Asked Questions

Do the GiroDisc Porsche 992 GT3 rear rotors require any modifications? No. The GiroDisc Porsche 992 GT3 rear rotors bolt directly to the car and work with unmodified factory pads and factory calipers. No caliper changes, bracket modifications, or additional hardware are required.
Do the GiroDisc Porsche 992 GT3 rear rotors fit the GT4 RS? Yes. The GiroDisc Porsche 992 GT3 rear rotors (A2-272) are confirmed fitment for the 992 GT3, GT3 RS, and 982 718 GT4 RS — all sharing the same rear rotor specification.
What are the benefits of 2-piece Porsche 992 GT3 rear rotors over OEM single-piece? The GiroDisc Porsche 992 GT3 rear rotors use a 2-piece fully floating design that allows the iron ring to expand thermally without distorting the aluminum hat, maintaining dimensional stability and consistent pedal feel across repeated hard stops. The curved vane design also forces active cooling air through the disc, providing better thermal management than standard vane designs under track use.
What happens when the GiroDisc Porsche 992 GT3 rear rotor rings wear out? When the rings wear out, only the rings need replacing not the full assembly. Replacement rings (D2-272) bolt onto the existing reusable aluminum hat, making ongoing maintenance significantly more cost-effective than replacing full single-piece rotors.
Is there a matching front rotor for the Porsche 992 GT3? Yes. GiroDisc offers two front rotor options for the 992 GT3 A1-272 (standard hat) and A1-306 (36mm hat). Confirm your hat specification before ordering the matching front set.

About GiroDisc

GiroDisc is a USA-based brake rotor specialist designing, manufacturing, and selling 2-piece fully floating brake rotors for performance road and track applications. All major components are produced in-house at their facility in Bellingham, Washington from domestically sourced materials — hats, rings, and drive pins all made under one roof to GiroDisc’s own specifications. Their rotors are engineered for drivers who demand race-ready performance with the everyday usability and serviceability that street-driven cars require.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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GiroDisc 2-Piece Rear Rotors for 992 Porsche 911 GT3 and GT4 RS [A2-272]

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GiroDisc 2-Piece Rear Rotors for 992 Porsche 911 GT3 and GT4 RS

Why Upgrade to GiroDisc Porsche 992 GT3 Rear Rotors?

Porsche 992 GT3 Rear Rotors: Construction and Materials

Features

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews