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  1. #1
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    HELP Trek 4300 Front/Suspension very stiff?

    Hi I'm new to this forum and just need a little help understanding my bikes suspension, I have 2007 Trek 4300 and I've noticed that its very stiff, and I don't understand the two dials on top? So if some one could help expain whats going on here I would really appreciate it.
    Thanks in advance
    Last edited by JrGenuine; 04-03-2013 at 04:45 PM.

  2. #2
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    One is a lock out and one is a rebound. Not much you can do with it. It's a basic entry level fork
    2007 Fisher Rig
    2011 Trek Paragon
    2013 Trek Madone 2.1

  3. #3
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    Yep.....its likely that the internals have gummed up over time. If you get no joy from lubing the stanchions (to get some oil down into the fork a bit) then your only recourse is a basic air fork.
    Rimmer - "There's an old human saying - if you talk garbage, expect pain"

  4. #4
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    Can you please tell me how I can lube the stanchions? and can you guys please tell me which is a lock out and which one is a rebound? I'll post a picture maybe you guys can explain.
    And second which air fork would you recommend?

    Really appreciate it, thanks in advance...
    Attached Thumbnails Attached Thumbnails HELP Trek 4300 Front/Suspension very stiff?-img_20130403_155545.jpg  

    HELP Trek 4300 Front/Suspension very stiff?-img_20130403_155550.jpg  

    Last edited by JrGenuine; 04-07-2013 at 07:32 PM.

  5. #5
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    The stanchions can be lubed by getting a narrow applicator (like a needle or very narrow and long cone), pulling back the rubber seals where the stanchion meets the outers and drip some oil in there. Then work the fork up and down a bit and leave for a few hours or overnight. You could do this a few times and that will probably be enough to let you know whether you're wasting your time.
    Rimmer - "There's an old human saying - if you talk garbage, expect pain"

  6. #6
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    Thanks, I will try it today. I really appreciate your advice.

  7. #7
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    Quote Originally Posted by AlexRandall View Post
    The stanchions can be lubed by getting a narrow applicator (like a needle or very narrow and long cone), pulling back the rubber seals where the stanchion meets the outers and drip some oil in there. Then work the fork up and down a bit and leave for a few hours or overnight. You could do this a few times and that will probably be enough to let you know whether you're wasting your time.
    Which lubricant should I use on my mountain bike's front hard spring suspension at walmart?

    Which basic trail and urban riding air suspension fork would you suggest?

  8. #8
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    The knobs on that fork are neither a lockout nor a rebound adjustment. They are both preload knobs. If the fork is too harsh, you want less preload. Turn the knobs counter clockwise to lower the preload. But given the age and relative inexpensiveness of the fork, the adjusting knobs are probably useless at this point.
    Last edited by blunderbuss; 04-06-2013 at 07:36 PM.
    Worked at Trek/Fisher dealer 2008-2013. Only a little biased.

  9. #9
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    Quote Originally Posted by blunderbuss View Post
    The knobs on that fork are neither a lockout nor a rebound adjustment. They are both preload knobs. If the fork is too soft, you want less preload. Turn the knobs counter clockwise to lower the preload. But given the age and relative inexpensiveness of the fork, the adjusting knobs are probably useless at this point.
    Any suggestions?

  10. #10
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    I miss-typed in my original post above and edited it.... Basically, if the suspension feels too harsh/stiff, try turning the knobs counter clockwise until they stop. If that doesn't help, then you're out of luck.
    Worked at Trek/Fisher dealer 2008-2013. Only a little biased.

  11. #11
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    Quote Originally Posted by blunderbuss View Post
    I miss-typed in my original post above and edited it.... Basically, if the suspension feels too harsh/stiff, try turning the knobs counter clockwise until they stop. If that doesn't help, then you're out of luck.
    So there's no point in oiling in your opinion? and theres nothing that can be done? so would you be able to suggest a air suspension replacement?

  12. #12
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    Re: HELP Trek 4300 Front/Suspension very stiff?

    Can't hurt to try it. For that fork, anything us better than nothing. Shock oil probably best for the stanchion, bushing interface. 3in1 is probably the common choice you may have on hand.
    A quick search will turn up some good choices in this forum.

    Sent from my DROID RAZR using Tapatalk 2

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