Williejamehufff
10-19-2012, 01:11 PM
Hey guys, I recently bought an 84 Atc 250r. I was wondering if anyone out there has put in a kit. I was wondering about the comparison from stock to a bigger bore. what you noticed in power etc. I'd also like to know how much boring you guys did. I 've seen 250cc to 305 cc but that's the largest I've found. Naturally I want all the power I can get. But I'd also like to watch my money if at all possible.