There's been a lot of mixed emotions with this company and considering more people complain then praise, I wanted to share my story of success.
I ordered M5Tech front bumper, M5 rear bumper, M5 fenders, carbon fiber front lip, and Dual exhasut/Quad tips.
This is for 2010 528xi(So yes the exhaust fits fine for those that always questions the XI version)
I have 0 experience with body work though I'm a pretty handy guy..All pieces to this project have what I consider perfect fitment.. After struggling a bit with the first fender cuase I didnt know what I was doing, I was able to get teh hang of it and put everything together very nicely.
They prepainted everything...This is including the fenders which were metal, while the rest is poly.. everything was an absolute perfect match.
So I approve of this company.
In regards to the M5 fenders because I couldnt' find much information. They are pretty much OEM e60 fenders with the vents...If they were OEM M5 then you would need no liner too.. It may be flared a tiny bit at the top but nothing you're gonna notice.. Keep that in mind before spending the 600 like I did.. though I have no regrets.
here's a picture of the front. I'll post the rear soon as I take a good enough picture that I approve of.