[Lefty]

Well hate to be the bearer of bad news but a Peace Sport 50cc is only capable of 30-33 mph. So wanting to reach 50mph you are better off getting a 150cc which out of the crate will do 50mph. For your 50cc to just reach 40mph will take at least a 72cc-83cc Big Bore Kit. The speedos on the scoots are way off showing 20% or more higher speed than it really is going. I know your new at this but someone has to tell you the right poop. Many will claim unrealistic numbers but ask them to prove it and they cannot so take them as a grain of salt because that is how people spend a lot of time and money and cannot reach some of the speeds some claim. Just telling It like it is BRO, I know what speeds a scoot can do by what is on there, 50s or 150s. The 250s not much you can do with those as far as performance parts so there is not to much with those most go fast enough for their size.
Lefty