None of the C4 UrS4/S6 sedans or avants that came to NAmerica (US and Canada) came with HP2 brakes (we only got Girling G60 front brakes). My "new" German-market 94 S4 V8 avant has HP2s. I was installing winter wheels and snow tires today and was looking at the calipers. I concluded that they are siginificantly different than anything I am familiar with (G60s, Boxster monobloc and Big Red/Black Porsche/Brembos (all of which, in that order, have been on my 93 UrS4 AAN sedan.)). For instance, I think I am seeing triple square socket head bolts (!!??). I did a quick search of the S2Forum for an HP2 Re and Re but found nothing (which is surprising to me). I did find some HP2 photos in Thuppu's UrS4 avant thread. But even then, I don't really understand how they work. As a result, I am looking to be "schooled" on HP2s.
Here is some info (Thuppu's photo and info from my good friend, Kate, the friendly part person):
Here is some info (Thuppu's photo and info from my good friend, Kate, the friendly part person):
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