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  1. Engine/EFI/Drivetrain
    So I have a 2014 Trx400x that I just finished installing a 440 big bore kit and a stage 2 cam. All new gaskets and seals. The rebuild went smoothly no hiccups got the bike back together and after some tweaking got it running rough with the stock jetting. It ran rough and after about 2 minutes...
  2. Engine/EFI/Drivetrain
    I just rebuilt the top end on my 400 ex. Was burning lots of oil. It had white brothers exaust and k&N air filter, 38 pilot and 160 main jet. I bored the bike .20 over and put in a high comp 11.1 wiseco piston. I also put in stage 2 hotcams. Now, I already changed my main jet to a 172 which...
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