Engine Mount Torx bolt size?

[haroldo_psf]

I need to remove the crash bars currently on my 2000 885i, because they have been "tested" and a tab is broken, so they need replacing.

I went to remove it yesterday, and my T50 torx bit was too small for the one torx bolt holding this three bolt engine mount bracket on the left side of the bike where the crash bar mounts to. What size is that bolt? Is it a T55 or T60?

[Timbox2]

T55, and thats the easy bit, holding the 17mm nut at the back is the awkward part, though the one you are on about isnt too bad, the front ones on mine are a bitch