This set is 64mm and came off a running bike that ran amazing the intake and exhaust are ported I was going to bore out to 64.25 and run them but went another rout looking for 250 plus ride
Can text pics also
http://s1309.photobucket.com/user/junkyarddog1/media/image_zps4ec1461c.jpg.html?sort=3&o=0
http://s1309.photobucket.com/user/junkyarddog1/media/image_zpsb3df3879.jpg.html?sort=3&o=1
http://s1309.photobucket.com/user/junkyarddog1/media/image_zps6de1677c.jpg.html?sort=3&o=2