man when my mopeds were stock i remember when 35pmh was cool. now with the crazy shit i have done and the money invested my 70cc free spirit cruises at 55mph magnum MK II goes about 48 , my motomarina sebring with 60cc kit goes about 45-50, and my casal will do about 45 with the muffler off. so in othere words performence mods are the way to go. my mopeds are still holding up strong after thousands of miles of travel with larger kits on them. but when the free spirit was stock with a one speed engine it could go 40 with a biturbo and 14mm bing carb. the targa i had would go 40-45 with biturbo sebring would do 35.
oh yeah the avanti super sport is a pretty fast bike stock it will go 45 with no mods.