If U seek for a better exhaust, consider the Shark DSX-10. It has an EC-conformity label and comes with the mounting bracket especially designed for the Svartpilen 401. I ordered mine yesterday and hope to receive it end of week – will post pictures and soundfiles then. Current pricing here in Germany is 380 Euros.
I’m planning to give this a go too, once my bike has passed it’s running in service. Gotta get some stainless steel rivets, looking for some anodised black ones as I think they’ll look better on the exhaust end cap.
American dude, who dremmeled out the DB killer of his stock exhaust. Claims it sounds better than any aftermarket exhaust. Not sure about that, especially if you use a decat pipe, but sounds much much better than with the DB killer in it.