fast bike motor engine

  1. K

    Looking to buy first bike engine kit and i need help deciding which is the best?

    Okay, so im new here and apologize in advance if im posting on the wrong part of the forum. I'm 5'7" and weigh about 160lbs. Im also i speed demon. Im looking for an engine kit from a reliable company that can offer me support and parts when i need it. I'll be riding it as my main mode of...
  2. F

    helloooooo

    ya just wanted to say hi... put on my 2 stroke engine on a trek mountain bike and works fine as of right now. I put a 34t sprocket on it and it goes around 40 mph. And what else can i do to the bike to make it go even faster:)xct2