The inner end of the boot has a CV joint band on it. On mine the crimp was on the back side and I could not get to it. Use channel locks or vice grips to rotate the band until you have access to the crimp.
I used a punch to stretch the crimp out then unhook the band. Didn't think to take a picture until after the deed was done, but you get the idea.
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Hot Tip: When replacing the band use Honda part # 95018-46250, BAND, AIR CLEANER CONNECTING TUBE (46). This band is easy to put on and take off for next time!
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Some aftermarket steering racks use zip ties, and I have seen people use worm drive hose clamps. These are not recommended with the plastic boot. They can leave a gap for dirt / water to get in. As a temporary measure I have a zip tie holding mine together until Amazon delivers the clamp. The air cleaner band is made to seal all the way around to keep dirt out of the engine, good enough for a steering rack.
Reassembly tip: remember to put a little grease in the groove between the boot and the steering rack body to make sure the boot seals.