SKU: 86518264062

Girodisc Rear Steel Disc Conversion – 390mm – Porsche 991 GT3 / GT3 RS / GT2 RS / 718 GT4 RS

Sale price$885.13 Regular price$983.48
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Pay in installments of $245.87 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Girodisc Rear Steel Disc Conversion – 390mm – Porsche 991 GT3 / GT3 RS / GT2 RS / 718 GT4 RSReplace Rear Carbon Ceramics Without Compromise This Girodisc rear steel disc conversion kit also referred to as iron rotors is a direct fit replacement for the factory 390mm PCCB (carbon ceramic) rear discs found on high performance Porsche GT models. Whether you're saving your OEM ceramics for resale or want predictable, fade free braking on track, this conversion delivers lasting performance and cost efficiency. Sold priced per pair. Why Convert

Replace Rear Carbon Ceramics Without Compromise

This Girodisc rear steel disc conversion kit — also referred to as iron rotors — is a direct-fit replacement for the factory 390mm PCCB (carbon ceramic) rear discs found on high-performance Porsche GT models. Whether you're saving your OEM ceramics for resale or want predictable, fade-free braking on track, this conversion delivers lasting performance and cost efficiency.

Sold/priced per pair.


Why Convert from PCCB to Steel Discs?

Ceramic discs are excellent for occasional fast road use, but steel rotors offer distinct advantages under more demanding conditions:

  • Better thermal stability for track days and competition

  • Improved brake pedal feel and control

  • Reduced long-term maintenance costs

  • Compatible with motorsport pad compounds like Ferodo DS3.12, Endless ME20/22, or PFC 08/11

🔧 Note: For optimal performance and brake balance, we strongly recommend converting front and rear discs together.


Key Features

  • 2-piece floating steel rotors

  • Lightweight, anodised 6061-T6 aluminium hats

  • Directional curved vane cooling for consistent performance

  • 390mm diameter – direct replacement for OEM PCCB rears

  • Fully CNC machined in the USA

  • Retains full compatibility with OEM yellow calipers and brake lines

  • Ideal for fast road use, endurance racing, and circuit driving

  • Once the Girodisc kit is installed, you’ll only need to replace the disc/rotor when worn. New hardware is included with replacement discs, and the aluminium bells do not require replacement.


Compatibility

  • Porsche 991.1 / 991.2 GT3

  • Porsche 991.1 / 991.2 GT3 RS

  • Porsche 991.2 GT2 RS

  • Porsche 718 Cayman GT4 RS

⚠️ Only suitable for vehicles originally equipped with PCCB rear brakes. Not compatible with models that came with steel brakes from the factory.


Front Conversion Also Available

This rear kit is designed to be used in conjunction with the matching 410mm Girodisc front conversion kit, available separately...

Girodisc Front Steel Disc Conversion – 410mm – Porsche 991 GT3 / GT3 RS / GT2 RS / 718 GT4 RS


Recommended Supporting Upgrades

  • High-friction pads (e.g. Ferodo, Endless, PFC)

  • Stainless steel brake lines

  • Motorsport brake fluid (e.g. Endless RF-650, Motul RBF 660)

  • Full Clubsport braking packages available on request

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86518264062

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Reviewed in the United States on May 25, 2026
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SBJ
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Reviewed in the United States on May 3, 2026
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KK
New York, US
★★★★★ 5
Economical, easy to install, and does the job!
Style: BE-182 1-Pack
First, depending on your car model, replacing your cabin air filter is VERY easy. With that out of the way, the shop wanted to charge almost 65 dollars to replace my cabin air filter. Decided to just buy one and do it myself. The only downside of waiting is that the air inside the car is not as fresh/clean when you're running your air. Anyways, you can usually get these kinds of filters between 20-45 dollars from auto part shops depending on the brand and features. I've used this brand and filter for the past 3 replacements on my car and they last just as long and filter just as well from my experience. No issues installing, and does in fact do a good job of filtering outside odors. Highly recommended for the price!
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★★★★★ 5
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Packaged very well, perfect fit and the quality looks great. Well worth the price.
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