Is there a good way to remove headless bolts?

My lock cylinder was ruined from an attempted theft over a year ago. I got a replacement from the same model and my self-repair is being blocked by these two headless bolts under the ignition.

Guides aren't easily available because of the sensitive nature of replacing the ignition. The ones I can find say to cut a notch in the bolt (and the housing) to get traction with a screwdriver.

While I could do this, I am concerned it would harm the value of the bike. I have the original keys and documentation that I am the owner. I'm considering just taking it to a shop or dealership to keep everything on record.

  • Those are tamper proof bolts, once removed they should be replaced with new ones, they have a head on them that breaks off when tightening. – Moab Mar 26 '19 at 21:19

I always managed to use a tapered punch to turn them - these were customers cars so no damage allowed...

Once they started turning a pair of needle nose pliers worked.

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  • This is the kind of thing I was thinking. Can this be done without taking the assembly off the bike? – 5AM Mar 23 '19 at 19:21

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