I rode a few miles with the new kit, install isn't for the faint hearted but it is as promised. Most noticeably hill climbing is improved, less noticable is top speed but that obviously improves as well. The bike I installed it on is 7 speeds and I find a better top speed in 6th or even 5th because of wind resistance. Dont have a speedo on that bike yet but I will clock top speeds. Very noticeable is how quiet the bike is without the left side chain, gear and tension roller.
You can start in low gear without pedaling by releasing the clutch but now instead of push starting it is pedal started. I would say that is the only negative for this system, but a small negative, I had no problems starting it.
Gas mileage, engine wear, noise and other factors all improve because you can find your optimum cruising RPM and let it stay there rather than wind it out at top speeds. Parts are all high quality so it seems this is a reliable solution and will make the 2 strokes a much better option for those bikes that have these engines.
Plus shifting is just dang cool!