l used to have a kawasaki kx 65cc now l got 80cc but in a 125cc size
i ride it all the time. no one in my class is into crossers do you crossers are cool for my age.
by the way its a 2003 model

fine bike

hell yeah its great!

i recently sold my dragster.big big big mistake.

Hold onto it mate
you will be thankful later!

if your 13 its time to move to a 250f, unless your like competing for the supermini title at lorretta's. lol

l made the mistake of staying on a 125 when l was 13 because when l was 14 l had already outgrown my 125 and was too heavy for it. my friend started off on a 250f when he was 12! and is still riding it and it still pulls him. l have to get a 450 now.

but if you can not get a 250f right now. l would get a 125 kit for that 85 and bore it out.

What bike you should move to totally depends upon how big a 13 year old you are so perhaps post how tall and how much you weigh. At 13 there can be a world of difference to how big you can be. If you are going to be very tall you could look at 4 stroke 250cc is but if you are on the small size you would be best to stick with the 85cc 2 strokes or the crf150r

Keep riding why not, Just do what feels best im 13 and l just moved up from a 230 to a crf 250 r and it hammers but l dont race so l wouldnt know much about that.