I've got a loose one, but it may be a few days before I can get measurements. Saw a picture of your bike. Can you pull that one and measure it?

 

Of course, I was hoping to avoid that by asking, but it looks like I will have to.
Looking to put a 21 inch wheel up front. Axle size will help me with that.

 

Look at post 15 here: https://www.hondarebelforum.com/f78/1982-honda-cm250-c-disc-brakes-13055-2.html

 

Thanks man! Unfortunately, that list only goes to 97.

 

'96 - 2000 Rebels are all the same.

 

So the diameter is 15mm. Pretty sure all Rebels through 2016 have the same diameter axle.

 

Thanks, peeps! I was about to tear down the wheel and measure...