They're 12's

 

Do you happen to know what kind of rear fender he has on his bike, is it a Yaffe Chupa?

 

It's Sinister bags and rear fender. The bike has parts from pretty much everyone. Yaffe, Sinister, Klock Werks. He's got a set of Jim Nasi side covers sitting in the box waiting to be painted soon. Probably going to swap to a 23" up front, trike trees and different front fender soon.

 

They look pretty cool. How wide are they? They look wider than the fairing.

 

I don't have an exact measurement but could measure them later tonight if needed. The tips of the bars stick out a little but when going down the road your hands are still behind the fairing.