If you're serious about performance and track days, the Girodisc A1-151 rotors are a game changer for your Porsche 996 GT3 or GT3 RS (2002-2005). Designed as a direct replacement for the OEM discs, these rotors bolt right onto your factory calipers without any modifications, ensuring a seamless fit and maintaining your car's factory brake bias and ABS efficiency.
One of the standout features of the Girodisc A1-151 is its lightweight construction. Weighing in at approximately 21.0 lbs compared to the stock rotors at 25.6 lbs, you'll notice a significant reduction in rotational and unsprung weight. This means quicker acceleration and improved suspension response—essential for those who push their cars to the limit.
The rotor's central hat is crafted from U.S.-sourced 6061-T6 aircraft-grade aluminum, ensuring durability and performance. The rotor itself is made from Girodisc's proprietary cast iron, which is poured and machined in-house right here in the USA. The innovative curved vane design acts as a centrifugal pump, efficiently channeling cooling air through the disc to prevent overheating during intense driving sessions.
The Girodisc A1-151 features a floating mount system, utilizing 10 high-strength alloy steel drive pins, designed and manufactured in the USA. These pins are cadmium plated for corrosion resistance and are secured with class 12.9 cap screws and hardened washers. This setup not only supports the braking load but also allows for axial and radial float, ensuring the rotor self-centers between the pads. To minimize noise, the pins are equipped with anti-noise spring washers, eliminating any rattling while allowing for thermal expansion.
“After installing the Girodisc A1-151 rotors on my 2004 Porsche 996 GT3, I noticed an immediate improvement in braking response. The weight reduction made a difference on the track, and I no longer worry about brake fade during long sessions.”
“These rotors fit perfectly with my stock calipers, and the installation was straightforward. They look great and perform even better!”
Upgrade your Porsche 996 GT3 with Girodisc A1-151 rotors and experience the performance difference firsthand.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Porsche 911 | 2004-2005 | GT3 |

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 ImprovementAs 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 BestGirodisc 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 LooksTheir 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 RacingIf 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.