dooweb2 Posted December 17, 2004 any tips for 03 xr/crf 80 ?do the plastics swap out? Hi just got my son an 03 xr /crf 80. how should it be jetted, open air box, uncork the stock exhaust. what mods did you guys do that worked well what were a waste?any dyno sheets out there. do the plastic from the crf just bolt onto 03 xr.I did a search already nothing came up. hes coming off of a klx 110. which is probably faster but hes not tall enough for a ttr 125 and needs to learn to master a clutch. Share this post Link to post Share on other sites