Bike is a 2021 Giant Fathom 2
This (now chewed up) collar seems to be seized to the axle and is preventing me from removing the axle so I can change the rotor. I've hammered a bunch from the other side by putting a socket that is the same diameter as the axle and trying to hammer through. All that is doing is spreading apart the arms of the fork and I'm worried it'll mess the fork up if I keep going.
I'm looking for recommendations of how to loosen this collar, as well as what the name of the collar is so that I can replace it after all this is done.
by DitchDoc_037