What bikes use a 30.8mm seatpost??- Mtbr.com
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  1. #1
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    Listen! What bikes use a 30.8mm seatpost??

    I can't find ANY and I have searched the web for like 2 hours. So please tell me your bike uses a 30.8mm seatpost! If yours does:

    1.) Have you upgraded your seatpost?
    2.) What brand/model seatpost did you upgrade to? Did you upgrade to a 30.9mm?
    3.) Do you still have your stock seatpost laying around somewhere? I WANT IT.

    Thanks,
    Andy
    Quote Originally Posted by anthonys
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    I am no longer a hardtailkid. 2012 Trek Remedy 9!

  2. #2
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    Get a smaller one and use a shim! Good luck finding a 30.8 seatpost, might have better luck winning the lottery!!!!

  3. #3
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    I found one, silver 30.8mmx350mm long.

    http://www.jensonusa.com/store/produ...+Seatpost.aspx

  4. #4
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    Thomson makes some, but they are expensive. And some other brands make them, but they are heavy as crap. If I could get a seatpost for $50, it would be ideal.
    Quote Originally Posted by anthonys
    Its still just the push of a button away...
    I am no longer a hardtailkid. 2012 Trek Remedy 9!

  5. #5
    Texan
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    Quote Originally Posted by Yogii
    Get a smaller one and use a shim! Good luck finding a 30.8 seatpost, might have better luck winning the lottery!!!!
    Adding a shim would not be a good idea.

  6. #6
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    Quote Originally Posted by Gary H
    Adding a shim would not be a good idea.
    I agree...
    Quote Originally Posted by anthonys
    Its still just the push of a button away...
    I am no longer a hardtailkid. 2012 Trek Remedy 9!

  7. #7
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    Wiggle UK bike store has them. For what you get I think the Thomson is good value for money. Free post to US isn't it?

  8. #8
    Never trust a fart
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    My bike has the 30.9 seat post. I'm using a Truvativ seat post.

    Easton, and several others make 30.9 seat posts. there is virtually zero difference between a 30.8 and a 30.9. Its only .1mm. Too small of a sizing difference not to work.

  9. #9
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    Quote Originally Posted by hardtailkid
    I agree...
    I disagree. There are some very good shims out there that should not cause any problems. Seatpost shims have been around a long time and used by many people.

    My wife's Forge Sawback has a 30.8 as well, and when I upgrade for her it will be getting a more universal post size and a good shim

  10. #10
    AZ
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    Nothing wrong with using a good quality shim IMHO .

  11. #11
    Big Gulps, Alright!
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    Have the seat tube reamed out to 30.9mm. Voila, the world is yours. 0.1mm isn't that much and shouldn't give you any problems with wall thickness.
    Axle Standards Explained

    Founder at North Atlantic Dirt, riding & writing about trails in the northeast.

  12. #12
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    Giant ATX 900 series full suspension frames used a 30.8mm seat post. The difference between 30.8 and 30.9 (which alot of current Giant frames use) is pretty much insignificant.

    I now use a 30.9mm seatpost off an Anthem X on my old ATX990, and my old Syncros 30.8mm post I use on the Anthem X. Get a 30.9mm seatpost and give it a go. They are plentiful and cheap. If its doesn't quite fit (it all likelihood it will fit no probs) then ream your seatpost tube out to 30.9. 0.1mm is not alot at all. If you've adjust your 30.8mm seatpost up and down over the years you've probably already reamed the seatpost tube a good 0.05mm, so you're half way there

  13. #13
    Token Hillbilly
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    I have a couple of 05 Trek 3700's with a 30.8, I think. Bontrager was the manufacturer for both.
    Trying to win hearts and minds, but willing to stomp them if necessary.

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