That's my bike. I used it for 2 month - with rear avid BB7. Now I wonted to test it with magura, but... Also, - other problem here. with chain. - If it install "straight" - its impossible again - if add one link - that wheel -goes out from drop-outs. - one way to resolve it - add half link, or install usual teensioner. Towler, - what do you mean?