2015 zx6r 636 engine. Made 125 hp at the wheel on 2wheeldyno's dyno. 5000 miles. Still in bike can show it running from cold. Thin head gasket and timed cam gears. Undercut transmission up and down(700$) for smoother shifting and upgraded shift spring and shift star. Oil changed every weekend. Has maybe 3 race weekends on it. Can ship at buyers expense. Located in Bremerton, Wa. Message me or text 504-251-2985 if you would like to purchase.