I recently sent out my sons rm125 to be bored and ported by Mr. Gorr. Are there any pipe recommendations out there? Also can we get away with the stock pipe for a little while or would that be killing our newly found power?
P.S. mid to top porting/race fuel/mx & sx racing
Thanks
Don't know if this will help but I ride a 310KX bored and ported by Eric. I have tried a PC pipe a FMF gnarly pipe and a 99 and 02 stock pipes and on my bike the stock 99 pipe works the best overall.So i would think the stock pipe will work OK. Good luck Ed