Girodisc Audi B5 S4 with Alcon, StopTech BBK Front Rotors

These are lightweight two piece rotors that are made specifically to be used on the B5 S4, or B6/B7 S4/A4 with the Stasis/Alcon or Stoptech 355x32mm big brake kits. This is a complete replacement of the hat and rotor so you no longer have to source replacements through the defunct Stasis.
The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilises a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.
The rotor and hat have a floating mount system, which utilises 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.
Once the Girodisc system is in place, simply replace the cast iron rotor when needed.
Sold/priced in pairs.
***These rotors only fit the B5 S4, C5 A6s and Allroads with the 2.7TT motor. This kit will not fit C5 A6s, RS6s, or Allroads with the 4.2L V8.***

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