'03 EC300 rear caliper options
 

With the help of a lot of member's input, I learned that my '03 front caliper was frozen, and I found both a Nissin rebuild kit AND an XL600 option as a bolt-on replacement. Ordered both.

Is there a Honda option for the REAR caliper, also? Haven't pulled that one off yet, but it's lever and braking action are the same as the front, so my $$ says that one's frozen also.

And this time, please don't flame me for considering a (probable) Asian knock-off. I'll rebuild the original Nissin, but if a bolt-on cheapy exists, I'll buy that, too.

Rear calipers haven't changed much in decades- i have a spare nissin rear caliper from a 2003 CR250r in stock in case the orginal craps out. Ebay - $25 i think.

About that rear caliper: It looks to me like the rear axle/wheel needs to be removed, otherwise there's no way to slide the caliper along the rear guide pin & past the disc? Correct?

Yes wheel must be removed