This will be my first build. Well I guess you can say half ass build because I am gettin my bike customer made from someone else and sent to me. Then I will put the motor on myself and also try and mod my motor to my liking. My question for everyone is this: what would be the fastest and most reliable 4 stroke engine? I know speed is not something the 4 stroke has but I was just wondering if there might be a faster one on the market. Also can I get a gallon tank or do they only come with 1/2 gallon tanks? I am also open to any advice or criticism. Like I said. My first bike and in need of help.