- Oct 4, 2003
My 97yz125 seems to be down on power, well it still power wheelies in 1st-3rd but seems weak compaired to my friends 01yz125. Its all stock, everything. Im pretty sure the carberation is also(it seems real close but ill verify it w/ a plug chop soon). Im going to replace the top end soon, could that have anything to do w/ it? It has good bottom end and decent power all over but still not like my friends 01. If it was the top end would it effect the bottom end or top end? Also what mods does this bike respond best to? and if i had it ported by EG for more mid to top would it be like all top end or could i have it just a tad more than stock?