I had Alcons brakes on my Audi B6 S4 and really though they were great and so much better than stock. I had RBF600 fluid used with them and the Carbotech XP8 pads all around. I had both front and rear. Front was 6 piston with 355 discs and rear was discs and pads. Also has SS lines put in. After that the piggy S4 really stopped quite well and the brakes never faded or overheated. But you must follow their bedding procedures to the letter. Key point is not to stop with brakes applied after the initial bedding,
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