motorized Bike top speed of 34 mph

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1. what cc engine is it eg 80cc or 66cc
2. I just did that on my mtb.... Beat that
3. Mine has a top speed of 48mph with only a strait pipe muffler and race carburettor 
4. H so fast can it be 
5. I've  done that speed using a 27 tooth sprocket. The motor doesn't scream so much and the bearings will definitely last longer.
6. Down hill lol
7. Interesting it appeared to be all stock and you got 54 KPH I have basically the same setup except I have the Nt 2 speed carb I haven't got my speedometer yet but I think I can easily break that after I break it in of course since mine is still brand new only has a few minutes run time
8. it's proabably because the engine has not been fully broken in. just keep driving it and you should notice it having more and more power after a while and drive it for like 30 min rides and it'l start picking up speed and running better 
9. I got a 66cc kit and it only does like 22 mph how can I get it to go faster
10. when i had mine i got it well over 40 with notihng done to it.
11. How heavy are these things? I would want to put this on a RTS city bus to go around town easy.
12. about 2-2.3
13. The motors that top out at 35mph are 66cc motors. Most states limit you to 48cc without a license, but state laws are meant to be broken, right?
14. any idea how much horsepower it puts out? 
15. i clocked mine in at 30 in a flat straight-away not even broken in and im about 240 pounds hahah