I'm also looking for a set of pipes. I've got a full yoshi on a 99 zx6r and it's always been a wicked sound.
Now the Katoom 990 is in need.
I agree with Treillw I'm after the best sounding set of pipes. NOT tinny! Nice and deep. A bit of a tearing sound.
Another thing. Can someone put up the sound of a KTM 990 with Akras, wings.etc BUT not at idle! Honestly who listens to their bike idling?
I've narrowed it down to three manufacturers, Leo Vince (look great, sound good on others), Akras and Wings.
Don't suppose any of these three do full systems? (Does anyone apart from GPR?)