Well they have the rear Avon chrome

You have no idea the issues that I might have doing that.
 
One story to show my mechanical luck.

I decided I could put a fender rail on a Harley, I mean it's only five bolts right? Well I got the four on that fit it to the fender but I could not install the nut on the threaded bolt at the front. There was very little room for my fingers( and as the Mouse has said i have a lot of finger experience) doing dentistry of course. but I just was having a tough time. I dropped it nearly a hundred times for 40 minutes then had to admit I was not able to do it. I took it over the the Harley shop and they said no problem. It took them an hour for the one nut. It turns out the threads of the screw were fouled by primer paint so they had to take off the wheel and re-thread the bolt.

I was vindicated. I'm not totally mechanically incompetent, just partially.
 

And one additional important factor: all new Rockets here in Europe are mostly still under warranty!
 
Do they make one for the front with same tread pattern. ??
 
Excedra Max comes in 130/70R17 as the largest front size unfortunately. For a plethora of reasons I don't recommend using it on an R3.
 
The whole brand mixing thing, I think it's widely misconstrued.

There are definitely some oddball behaviors possible when mixing V profile tires with hemispherical shaped tires though, particularly it can be off putting with a sharp V rear and rounded front.

On the 2.5 I'd be using the Emax rear and Avon 140/75 front, combined they tip tip in a touch slower than both avons, but faster than Metzlers.