will it fit?

I would say no, but if you have enough time, money or skill anything is possible.
 
Most all bags will fit - ya just gotta figure it out!
Seriously, not really a big deal to do, even with hard bags.
 
What sort of bags? I suspect that it would take a bit of feckling to make OEM R3T panniers fit a R3C.
 
They are the standard R3T hard bags that come with it. I am selling them and the guy asked me if they would fit. I have no idea
 
No. Well, no and yes - no, insofar as the mounting rails and such goes. The rear-end of the R3T is redesigned from the stock in order to make it narrower and is entirely different compared to the other R3's - including a narrower 180 tire - and the rails that the bags are mounted on are integral in holding up the rear end of the mufflers etc. I also severely doubt the same mount points/bolts in the same locations exist on the R3 anything-else, without having one to look at.

Short answer is no. I'm sure mounts could be fabricated, but it would be no easier than any other bags and possibly harder (plus, frankly, the R3T bags aren't that great, too small and narrow but it was probably the best they could do on a Rocket).
 
If you can mount Easy Brackets to to the backs of those bags, they should fit.
 
Yes they can be mounted but your going to run in to the cans/muffler due to the angle. You would need to lengthen the cross bar. So changing the cans and a little of engineering all is possible. Practical and cost is a WHOLE DIFFERENT THING. MTCW