Lifan 110cc 4 Speed Manual Kick Start Pit Bike Engine, Used In C90 & Monkey Bike
These are a 4 speed manual kick start air cooled 4 stroke engine. it ran perfectly for the 1,939 mls of the trip. Speeds were mainly between 43-50mph. It is still as quiet as a mouse and used no oil (I did have an oil cooler fitted).