hi guys, I recently bought a 2008 Sportsterand it has these accessory fins installed near the spark plugs. I can see that it looks like a couple of capscrews were used to attach them. I want to remove them, but I am cautious about just loosening these capscrews in case it affects something else. I'm perplexed about how these things are attached. I can't find any information about them or references to them anywhere.
Can anyone shed any light on this please?

Can anyone give me some clues what allen key will undo these.............not the actual size...........but will it be metric, SAE, AF, whitworth.