Removed from kart to install cr125. Dont know much about it. I can say appears to be very clean and the rest of kart was fully functional and very well taken care of. Kart came in package deal with couple tag karts. Just happen to have a rebuilt cr engine and im just a weekend warrior. Not competitive. Man who sold me the kart said needs new piston but lower end was still fresh. I cant even find anyone who has even heard of pavesi around me so just sticking with what I know, Honda 2 stroke. From what I understand these are very competitive race engines. Not for play. Asking $600 for the package. May be willing to separate out parts.