Go onto Fleabay and pick up an Arai GP-5x, the only arai to get 5*'s in sharp testing. Got one and is as good as my chaser. Only drawback is the choice of visors and pinlock/fog city availble. looks a bit like a car helmet but is the bike version with larger visor. Only avaailble as old stock now.
The orger from sheffield with the blade for sale had an XL, for sale, on here, not long since. Search and thee shall find.
EDIT -
http://forums.sv650.org/showthread.p...highlight=arai
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"You know, Scotland has its own martial arts. Yeah, it's called Fuk-U. It's mostly just head butting and then kicking people when they're on the ground"
The Stoppy King