It is smooth as silk at any speed... I blew the speedo cable off years ago at 205 miles... But I'd say very best screaming wide open down college hill laying on the gas tank it might get like 58.5 or so.. We've clocked it at 56.. It needs new gears and a rebuild on the motor but these motors run forever and the body looks like hell from wrecks and neglect and abuse. I never finished putting it together the last time. Has a tool box now and never screwed the lid on. :doah: ... I just run it an say piss on it anymore.. I've put so much effort into the retarded thing.. And it seams to look GREAT for about one day then a bird flies into it or something and it looks like crap again.. Rotate tires, sprocket and chain every 1,500 miles... Oil change when it runs out... and drive it.. :lol: I call it the Stupidcycle, lately....... Sewercycle, Scrapheap.. I like Scrapheap.. Best describes it... THAT and if it says Scrapheap all nice on the side of the tank... Maybe I'll less likely to find window lickers at the gas station telling me.. :drool: I USED TO HAVE ONE JUST LIKE THAT!!!!!! :drool:..... :glare:...... Dumb:001_9898: .. :lol: