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  1. New Member Introductions
    Hello all, new member here. Hey I have been following these forums for a while and figured this would be the place to ask about what main jet/ pilot jet i should start with. Mod list below 1991 honda trx250x 80mm big bore cylinder JE piston (11.5:1 compression) Hot cam port and polished head...
  2. Repair & Maintenance
    I have a 2004 400ex. It has a White Brothers Full Exhaust. I have a uni foam air filter on it with the air box lid on. Carb has a 155 main and 42 pilot jet. Everything else is stock however I have the air/fuel mixture at 3 turns as it runs better there than any other position I tried. Everything...
  3. Honda TRX
    I just bought a 2004 400ex that has a full White Brothers Exhaust. (pipe and muffler) It has all stock engine components and a stock carb and I want to run it with a closed lid on the airbox and a Two-Stage Foam Uni Air Filter. What should my jetting look like? I am new to this so any tips are...
1-3 of 3 Results