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Girodisc 2-Piece 380mm Rear Rotors for Porsche 991 GT3, GT3RS, GT2RS, 991.1 GT3 - A2-146

Alright, so if you’re looking to upgrade your braking game on your Porsche 991 GT3 or GT3 RS, let me tell you about the Girodisc system. This isn’t just some flashy add-on; it’s a solid, direct replacement for those OEM iron rotors. No need to mess around with modifications here, and you can keep using your factory pads—something that’s pretty rare with other aftermarket options. Just bolt it right on, and you’re good to go with your OE calipers.

What I really appreciate about these rotors is the weight savings and performance boost without going overboard with a big brake kit. You won’t lose that factory bias, and your ABS will still work like a charm. It’s a win-win when you want to keep that factory feel but gain some serious stopping power.

Now, let’s talk materials. The central hat section is crafted from U.S.-sourced 6061-T6 aircraft-grade aluminum—yeah, it’s the good stuff. The disc itself is made from a proprietary cast iron that’s poured and machined right here in the USA at Girodisc. They’ve designed these rotors with a curved vane setup, which is all about channeling cooling air effectively. It’s like having a mini centrifugal pump working for you every time you hit the brakes.

One of the neat features is the floating mount system. It’s got 12 high-strength alloy steel drive pins, which are also made in the USA to Girodisc’s own specs and cadmium plated for corrosion resistance. These pins handle the braking load while allowing for some axial and radial float between the hat and disc. Plus, they’ve added anti-noise spring washers to keep things quiet when the rotors are cold. This means no annoying rattles, and the rotors can self-center between the pads as they heat up.

Fitments:

  • Porsche 991 GT3 | GT3RS | GT2RS with OEM Iron Rotors
  • Porsche 991.1 GT3 with OEM Iron Rotors

Notes:

  • Once you’ve got the Girodisc system installed, swapping out the cast iron rotor when it’s time is a breeze.
  • If you pair it with performance pads and high-temp fluid, you’re looking at a killer setup to combat overheating or warping.
  • If your car came with OEM center lock wheels, make sure to choose the center lock drive pin option.
  • These are sold in pairs, so keep that in mind when you’re ordering.

So, if you’re serious about your GT3 or GT3 RS, these Girodisc rotors are a no-brainer. They’ll give you the performance you crave without sacrificing what makes your Porsche feel like a Porsche.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle Make/Model
Porsche 911 2014-2016 GT3
Porsche 911 2016 GT3 RS
Porsche 911 2018-2019 GT2 RS

Girodisc Banner

Who is Girodisc?

Girodisc is an aftermarket company that was founded in 2003 in Costa Mesa, California. It specializes in high quality brake components and initially catered to one of the best cars in the world, Ferrari. They later expanded their product offering by offering their products to various vehicle platforms. Today, they have become one of the fastest growing companies in the industry.

Continuous Improvement

As the company continued to grow, they relocated to a bigger facility in Bellingham, WA in a 17,000 square foot facility. It is equipped with the latest manufacturing tool available along with a dedicated rotor casting tool and a brake dynamometer. This helps them ensure that each product that comes out of their facility meets their high standard.

The Best of The Best

Girodisc offers some of the best brake components in the market and is known for its two-piece brake rotors. These are bolt on parts that fit directly on the vehicle. They only use the best material available which helps them create the best products.

Performing As Good As Good As It Looks

Their products are designed to have both form and function. Their rotors are made to improve brake ventilation and its cooling capability. It is also lighter which helps reduce unsprung weight. It comes in a variety of color finishes and slot patterns depending on your preferred style.

Purchase Girodisc Products at Vivid Racing

If you are in search of quality brake components and upgrades for your vehicle, then Girodisc is the brand for you. They have brakes designed for both street and high performance applications. To know more about Girodisc, visit Vivid Racing and check out their list of products that would fit your specific needs.



Purchaser acknowledges the Product is for off-road racing use only. The nature of off road racing involves significant risk, and the conditions under which the Product is used and types of use of the Product are many depending on factors such as installation and use. Due to the inherent risk of the activity in which the Product is used, the Purchaser understands and agrees the Seller provides a limited warranty for the Product, specifically, the warranty is limited to the following specification: less than .0015” runout and less than .0003”disc thickness variation.

If Purchaser provides Seller with written notice of any condition inconsistent with the specification set forth above on or before six (6) months from the date of delivery and complies with the return requirements set forth in Section 6, then Seller will, at its election either:
  • Provide a replacement Product, or
  • Refund the purchase price.
This limited warranty does not cover, and Seller will not pay for, or provide, labor or materials that which may be necessary to remove a Product or install a replacement Product. This warranty is limited to the exchange of the Product or return of the purchase price.

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