choper

I got a pit bike engine thats olny one speed and i was hoping to get a kit to make it 4, 5 maby even 6 speed. The engine is a 2007 139fmb 110cc. If anyone know where i can find an upgrade kit please let me know. Thanks.

Seen this on CL and thought you guys might be interested, it looks to be some what all original. I dont have enough money for it so thought ill let you guys know about it before someone grabs it. Old School Mini Bike