Indeed the exhausts appear to be work in progress. But maybe this set on the green one is not the latest development. These look to me very similar to the exhausts on the geneva launch and the Milan design week pictures. If you look at the exhaust on the latest vid
posted in the 3w section you see some extra features, I think they are;
-pick-ups for lambda sondes between the cilinder and the bends.
- A cat on the straight section just behind the front wheel.
- A silencer (obviously).
I think that version could be closer to the production model than the (loud) pipes on the green meanie?
Just my 2p. Cheers J