I have a cr 85 .. 2003.. on my previouse piston the cylinder ring broke and a chip of it totaly effed up my whole piston and it left a scratch about 3 inched long from the top of my cylinder past the exhaust port.. it honestly looks like it wont do anything its not deep enough for your fingernail to get caught in it. but i do know that even the littlest hair line scratch can effect compression.. i wish i can throw up a pic of it but does anyone know of anyone who had some damage in there cylinder and is still usable . ide hate to buy a whole new cylinder.. and to hone it the guy said its going to be a pain to fix.. he said u can not bore out my cylinder i would need to get a sleeve let me know if this is wrong or any comments about this..
thanks .
thanks .