I have had my 535d m sport for about three weeks now and its time to start making a few alterations!

I have been looking around for some subtle styling changes and seem to be coming back to the Hamann kit, front splitter, side skirts, not too sure about the rear end so may go with something different here but ultimately I would like to get a quad exhaust system in place.

Having seen plenty of pictures around, I am unable to find out where to get parts from. Can someone point me in the right direction.