Adapting to 17" CBR wheels?

[Rox_imp]

If you want to use a 17 in wheel for the purpose of better rubber where is also another option. Unless you're just wanting it for the alloy wheel asthetics.

I would suggest you go spoke. Get some EX hubs and lace them with tubeless rims. Go with a 17 maybe an 18 up front so you don't have to deal with speedo calibration.
Then get a 17" × 5" for the rear to accomodate a 180r17 tire. But with that you may need to get another swingarm. Gotta do measurements. Worst case you can get a wider swingarm from Webike but they're not cheap.

Then spacers for the chaindrive to align for the larger rim and wheel.

Pricy but it'll work. Your front end will line up at the calipers and rotors for certain.
The rear will also work..
Plus tubeless rims (maybe go black aluminum rim ) would look friggin sick.

Modding CBR rims if you're not a machinist or a savvy mechanic I wouldn't suggest. It's far more work than you think. I modded FZR600 rims to an SRX600 back in the day. Got it to work but the ordeal turned into a headache and a money pit.