[John b]

Will i need to re jet my yz125 05 if i get a full pro circuit exhaust ?
Thread above to complicated for me anyone got an idea how much it would be ?

[Timmy511]

its dead simple mate, fit the pipe, run it, check the plug, if its not the right colour (light tan) re jet it!

If the plug is white, its needs to be richer, a bigger jet,

if its wet and black its too rich, lean it out with a smaller jet.

if this is to difficult for you to do, leave it stock and learn to ride it proper!

OR pay some money and have it jetted up on a dyno!

[spanky6]

Originally Posted by John b

Will i need to re jet my yz125 05 if i get a full pro circuit exhaust ?
Thread above to complicated for me anyone got an idea how much it would be ?

If you cant understand the above thread, then you got no chance.. YOU NUMPTY

[John b]

LOL kk
PLUG ? spark plug ?
Do you know anywhere what sells jets ?

[katoom250sx-f]

try a YAMAHA dealer? Bavins of Diss, Motoward ETC ETC ETC, basically any shop will get you jets for your carb though. Do you own a manual? If not go bloody get one and read it like the bible! It will help your fingers from typing endlessly on here

[fireblade#6]

from standard just go to a 480 main and your sorted.

ps listen or ignore the choice is yours but i had a pro circuit on mine and it was awful; no bottom and a hard hitting mid and top. definitely a pipe aimed at the expert riders.