Interactive exhaust valve

[the Ferret]

I think in some markets it has one.

My machine has this fitted, a while back I took the end cover off the silencer to investigate and it is operated by cable from a servo positioned by the collector box. Not sure what will happen if an aftermarket silencer were fitted, guess you leave the servo operational without the cable. Might check with Staintune on that, as one of their silencers is on my wish list. Can take pictures if required.

Not required but pics would be appreciated so we can all see where it is and what it looks like on the CB. I don't see anything in the pic Randy posted.