GiroDisc 97-09 Audi S4 (B5/B6/B7) 300mm Slotted Rear Rings

These GiroDisc 300mm rear rotor rings are made specifically for the 1997-2009 Audi S4 models, covering the B5, B6, and B7 chassis generations. If you're looking to upgrade your braking system for improved performance and durability, especially during spirited driving or track use, these slotted rotor rings are a solid choice. They are designed to replace your factory rear rotors, offering a significant improvement over standard cast iron discs.

What sets these GiroDisc rings apart is their construction and design. They are made from a high-carbon iron alloy that is known for its strength and resistance to heat checking, a common issue with performance braking. The rings are slotted, which helps to dissipate heat and gasses that build up between the pad and the rotor surface. This slotting pattern is crucial for maintaining consistent braking performance, especially under heavy load, by preventing pad glazing and keeping the rotor surface clean. The floating design of the rotor ring allows for thermal expansion without inducing stress into the rotor assembly, which helps prevent warping and cracking over time. This floating system also ensures that the rotor ring can move independently of the hat, further reducing stress and improving overall brake longevity.

When installing these rotor rings, you'll typically be reusing your existing rotor hats and hardware, as these are sold as replacement rings. This makes the installation process more straightforward, assuming your original hats are in good condition. It's always a good idea to inspect your rotor hats and hardware thoroughly before reassembly. These GiroDisc rings are a direct replacement for the factory rotor size, ensuring a proper fit and function with your existing brake calipers and mounting hardware. For those pushing their Audi S4 to its limits, these slotted rear rotor rings offer a noticeable improvement in braking feel and fade resistance.