Basically, what Fast said...
I raced a CR80 in 2001 and part of 2001. I found that the stock suspension was good enough for me (I was then 148) and that the stock brakes were fine. The only changes I made was an FMF Fatty pipe and silencer, and had the stock hubs laced up to a 2.5 front and a 3.5 rear. 125cc roadrace tires fit perfectly.
Good luck and have fun.
I raced a CR80 in 2001 and part of 2001. I found that the stock suspension was good enough for me (I was then 148) and that the stock brakes were fine. The only changes I made was an FMF Fatty pipe and silencer, and had the stock hubs laced up to a 2.5 front and a 3.5 rear. 125cc roadrace tires fit perfectly.
Good luck and have fun.