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Engine/EFI/Drivetrain

Discuss engine, fuel injection, air intake, and drivetrain modifications here
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TRX General Discussions

If you want to talk about the Honda TRX and it does not fit into a more specific section down below, post it in here.
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Maintenance / Important Information

Maintenance Questions, Installs, Recalls, How-to's, Tips, etc
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New Member Introductions

If you are new to the site, please introduce yourself in here. You will find that our community is very friendly! If you have questions on how to use the site, this is the place to ask.
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Suspension/Steering/Chassis

Discuss major suspension, steering stem, chassis and similar modifications here
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Trending Discussions All Trending Discussions →
  1. TRX300 no or weak spark

    TRX General Discussions
    Hi all, I have a 1989 TRX300 4x4 which I am having spark issues with. At first I thought it was the ignition coil and have replaced that with a brand new one but still nothing. next step was the CDI. With the spark plug removed I can only get a weak spark when the starter button is first...
  2. Neutral safety switch?

    TRX General Discussions
    2007 trx90. The green neutral indicator light recently stopped coming on even when in the neutral position... After clicking the shifter up and down a few dozen times I can get it to come on and only then will the quad start. Is this a neutral safety switch issue or could it be something else
  3. Carburetor Basics ( Thanks to Saber6)

    Maintenance / Important Information
    Many people believe that carbs are very complex, but with a basic understanding of how carbs work, you will have no problem with performing your own carb adjustments. First off, there's 2 basic fuel related problems. You either have a rich mixture, or a lean mixture. A rich mixture is...
  4. 400ex PROPER VALVE ADJUSTMENT (i know theres a sticky, but something was left out)

    Maintenance / Important Information
    Here is a VID i made of what the right exhaust may look like if you dont take the decompression mechanism into consideration when adjusting... Here is the proper procedure, its also in my VID description.. THE CORRECT PROCEDURE TO ADJUST THE VALVES: 1. Remove the spark plug and both allen caps...
  5. New member/ looking for some input help

    New Member Introductions
    I have a 2004 trx400ex I just rebuilt the motor put a big bore 440 kit on it with stage 3 hot cam, ported intake an exhaust with after market header with fmf slip on..... this beast rips but my problem is in 5th I can’t ride it out my bike cuts out like it’s starving for fuel or getting to much...
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