Originally Posted by Alan l.
As for the rear bar look into the F07 550GT or the F10 M550dX.
Both of them offer thicker bars based on my research so far. I think the stock rear bar is 14mm and the m550dx is 16mm and the 550GT is 18mm!
You the man, that is a good call on the 550GT. I've been trying to source the M550D bar, but the 550GT looks to be the largest.