I wanted to remove my helmet lock since it was useless behind the saddle bags. I tried every allen and torx available but could not get the thing off!
Called my local stealer's head mechanic (very knowlegable) who told me the head was designed to be tightened only, so no one could use an allen/torx to steal you helmet! It couldn't be loosened/removed with wrenches.
Anybody else ever hear about this?
I cut the head off with a wafer-wheel on a metabo side grinder to get mine off.