It rips all right and that is only a Honda CR80 motor. The SwedeTech motor people claim over 30 HP out of 80cc. I have the same kart in Yellow and will be putting a CR125 on it. I am going to see about a new item that just came out and that is a 12 volt starter unit that bolts right to the motor and you use a motorcycle battery for juice. How nice that could be!!