ok since there isnt much info on these i figured id put it out there for anyone considering these. i didnt take pictures of them when i got them but first impressions where, short beefy skirts with large windows located at a higher placement then wiseco an overall good looking piston.
my bike currently is .40 over stock cylinders with no porting whatsoever. vforce 2 reeds with reed spacers, timing plate +4, stock carbs main jet at 290, occasionally switch between pods and box, cpi pipes, coolhead with 19cc domes. +1 tooth front sprocket.
a buddy of mine has a very similar setup to mine with regular pistons so i have a pretty equal comparison. my riding style is mostly open road riding and trails.
so far i have put about 10-15 hours on the bike, always making sure to let my bike warm up before revving/riding it. there is a distinct stronger top end pull over the stock piston bike but still has enough strength to lug through trails without having to keep it in the powerband. overall nice power without sacrificing low end.
lining up against each other it is pretty even, i attribute this to me needing to learn how to launch on pavement with brand new knobby tires.. however if were rolling i pull on him every time.
so far no complaints. ill keep this thread up to date, until i swap out my top end to aftermarket.