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  1. Help FMF FATTY/FMF SHORTY JETTING 17 yz125

    thanks for the help guys, didnt have to re jet the bike ran better than stock more throttle response recommend it if you have a 125
  2. 2010 yz125 oil gas mixture.

    go with what your manual says I run 32:1 in my 125, if your bike dies down play with your air mixture screw and idle screw
  3. yz125 gear oil

    I use 85wt in my 125
  4. Help FMF FATTY/FMF SHORTY JETTING 17 yz125

    Need help I have 17 yz125, vr4 reeds, FMF FATTY AND SHORTY, 93 octane with 32:1 yamalube, stock jets I ride in Southern California. bike runs great no bogs at all with stock pipe and shorty, Im about to put on a FMF fatty and I bought a JD Jetting kit cause I have been reading on the forums a...