Girodisc Rear Rotors for Audi RS5 B9 (2018-2023) - A2-149

If you're looking to upgrade your brakes without diving into a full-on big brake kit, let me tell you about the Girodisc system. It's a direct swap for your factory discs—no fuss, no modifications needed. Just bolt these bad boys right onto your ride, and they’ll fit seamlessly with your OE calipers. The beauty of this setup is that you keep your factory bias intact, which means your ABS will keep working like a charm.

Now, let’s talk materials. The central hat section of these rotors is crafted from U.S. sourced 6061-T6 aircraft aluminum. That’s some serious stuff—lightweight yet incredibly durable. The disc itself is made from a proprietary cast iron that’s poured and machined right here in the USA. You can feel good about supporting local manufacturing while getting a product that’s built to perform.

One of the standout features is the curved vane design. This isn’t just for looks; it’s been developed in the racing world to act like a centrifugal pump, pushing cooling air through the disc. So, whether you’re cruising down the highway or hitting the track, these rotors are designed to keep their cool.

The floating mount system is where things get really interesting. It uses 10 high-strength alloy steel drive pins, all made in the USA to Girodisc's own specs and cadmium plated for corrosion resistance. These pins handle the load during braking while allowing for some axial and radial float between the hat and the disc. This means you get a smoother, quieter ride. Plus, we’ve added anti-noise spring washers to keep any annoying rattles at bay when the rotors are cold. As they heat up, they expand, but you won’t have to deal with that dreaded noise that often comes with floating rotors.

Some quick notes:

• Once you’ve got the Girodisc system installed, replacing the cast iron rotor when it wears out is a breeze.
• These are sold and priced per pair, so keep that in mind when shopping.

As for fitment, these rotors are designed specifically for the Audi RS5 from 2016 to 2023. If you own a B9 RS5, you’re in luck with the a2-149 GiroDisc rear rotors.

In short, if you want to enhance your braking performance without going overboard, the Girodisc system is a solid choice. It’s all about keeping it simple while still getting that high-performance edge.