surg

  1. zackbrappp44

    2001 kx125 bogging on bottom end and surging on top

    I have a 2001 kx125 this is running what pro Circuit recommend for jetting (I have a platinum pipe), but the bike seems to run rich in the low rpms and then up top it seems to have sudden surges once in a wile when I do a pull. I don’t want to ride the bike if it is going to damage the motor...