Hi guys, i am looking at purchasing a pitbike for the first time. I will use it around my 5acre block just for a bit of fun, i am 5'10 and 90kg.I was looking at a pitpro 140cc mid size or 140cc big bore whats the difference, or would a different brand be the way to go ! (Atomiks).Any advice would be most welcome, my budget is around $1200. 
