Hey guys what's up. Been working on this for a lil while. 64cc makita chainsaw on a 20 inch mongoose bike. Geared for top end. Does about 40 mph. Love riding it. Turns heads where ever I go. If you want specs and have questions on how I built it message me. I also have a facebook page dedicated for all my projects. It's called Single Cylinder Customs. Find it on there. There's more pics and vids of the bike and my other projects on that page.