Anyone used them? How do they sound?

 

slighty louder then stock.
Youtube is a good place to hear pipes / slip ons.

 

You have to get the older ones if you really want some better sound. Otherwise, if it's sound you're after, I'd stay away from them. The V&H SO's give much better sound and are made by the same people. They're just not considered 100% street legal. But then again...pretty much no after market pipes are!

 

A lot better than stock, but not as good as most other aftermarket pipes.

 

SE II's sound much better.