What exhaust ??

[B6_Dolphin]

Sounds good , I noticed that it looks like it's not got a baffle in it ( db killer ) does it come with one or is it a race can ?

Neither the Stealth or the Supersport use db killers.  Both canister designs are straight-through, however, the Stealth has more internal baffling.

Since you can pair any of the current canister options with the mid-pipe, if you wanted to pick the quietest configuration, it would most likely be the Evolution in Stealth.

I've been riding with the Stealth canister for 4 years on my '05 FZ1, and while it doesn't objectionally drone during highway cruising (usually around 4-5k rpm), throttling it to pass a cager let's them know you're there.