Off Roading Forums banner
atc 250r
1-1 of 1 Results
  1. Performance ATV Mods
    Got a 86 trx250r. - high compression head gasket .01 (or is it .001) thickness. its paper thin - ported and polished - v-force 3 reeds - fmf gold exhaust When its cold it screams but when it gets hot I think its preignitioning. The plug looks fine - but i haven't been pushing it like a want...
1-1 of 1 Results