Sport 1100 - which exhaust crossover is this?

[Kristian]

I've been baffled by which crossover this very fine Japanese-market Sport is wearing; it appear to be a unique design where each header has a pipe that branches off in the flow direction to the other side. Never seen anything like it on a Guzzi. Reminds me of the old Ducati spaghetti systems with similar design.
https://www.youtube.com/watch?v=Yc57PUzluc4

[rocker59]

Yeah.  Cool stuff, there.  Nice exhaust.  Never seen it, but yes, same effect as the Ducati Performance or Staintune "spaghetti system" on a 1990s Ducati Supersport.

Probably some Japanese aftermarket accessory.  And, probably pricey!