I have to add....I had a Kawasaki H-2 two stroke triple and drag raced it a little. It wasn't about bigger pistons, it was about better pistons, porting, higher compression (via milled heads), bigger carbs (couldn't afford Lectrons, I think they were 36mm Mikunis/flat slides weren't in production yet) and three expansion chambers with tiny end baffles. I also remember adding a couple of cross members to the frame and S+W rear shocks. I've had so many bikes but I think I went 11.2 at its fastest (118mph trap speed comes to mind). Of course I rode it to the track then the next day would be up in the twisties! Things were so simple back then! Raydog