Thanks MRBMWX5,

As far as fit , I went to a Remus dealer website and matched the part numbers for this exhaust to other fitaments..ie 3.0 motor etc. That is where I recieved my fitament information.
You might want to do a check for yourself just to double check. Also, it fit straight on to my X5 with no problems at all, I did it in about two hours.
I do not think warranty is an issue, but you can always contact your dealer and ask.
Thanks for looking!