HP2 in place of later calipers- confirmed, it's a bolt on.
 

There was a long string of posts a few weeks back about what calipers to use. Well, I just finished replacing my late style calipers with a set of HP2's. Happy to say it's an easy bolt on at least for my allroad.

I did have some problems getting fluid to flow in the RF caliper, but my initial shake down drive around the block confirms what others have said- What a much better pedal feel! And that's with some air still in the RF. Can't wait to see how it works after a second bleed and bedding in.

For the allroad I needed to use the allroad rubber brake lines since they're about 4" longer to go with the height adjustable suspension. But for an A6, you don't need to worry about that. Heck, changing the calipers isn't a lot more work than changing the pads in the later style calipers.

that's all.

Very Nice, not sure why Audi stopped using the HP-2's I had them in my 01 and liked them.

good to know - should be posted to Stoney's FAQs.

Great to hear! Especially after all the debate!

Good to know. The HP-2s are probably good enough for anything, but I ordered the Stoptechs

Not a bad choice. Your original post started the whole debate so....
 

glad we both ended up with what we wanted. If the HP2's don't do enough, I can always still go with Stoptechs. But at least this was cheap- under $300 with ATE Super Blue and brake clean.

Thanks for starting the debate.

Heat-related rotor warping issues, I believe.

Oh, yeah, the new ones didn't have any heat issues at all! NOT!
 

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Yea, my allroad is on it's 4th set of rotors... with the later style calipers...
 

And my old A6 2.8 went through 4 sets of rotors in 60,000 miles, with the crappy single piston calipers.

Cool! See if you can find some SS lines that will fit - the improved feel is worth the $$, IMO.