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  1. #1
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    New question here. Seat post diameter of a GT quatrefoil DX tandem...!?

    My post are so crappy they don't even have the size engrave on them, any help will be appreciated..

  2. #2
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    mine is 29.2mm
    Attached Thumbnails Attached Thumbnails Seat post diameter of a GT quatrefoil  DX tandem...!?-gedc1455.jpg  

    Needed: 26.8mm XTR seatpost, blue GT/Grundig Jersey.

  3. #3
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    Quote Originally Posted by gm1230126 View Post
    mine is 29.2mm
    Thanks senor, I was afraid of something like that, I try the 28.6mm of my Ibis tandem and it was to lose and then I try a 30mm and it was to wide..

    Do you have aftermarket or stock post...??

  4. #4
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    Kalloy makes 29.2 seatposts. Probably a couple of other manufacturers too. Choices are very limited though. Any shop should be able to get them for you.

  5. #5
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    Quote Originally Posted by MidwestBike View Post
    Kalloy makes 29.2 seatposts. Probably a couple of other manufacturers too. Choices are very limited though. Any shop should be able to get them for you.
    Oh mine are fine, they are just heavy and cheap, a Kalloy will not be much better..

  6. #6
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    Re: Seat post diameter of a GT quatrefoil DX tandem...!?

    Quote Originally Posted by patineto View Post
    Oh mine are fine, they are just heavy and cheap, a Kalloy will not be much better..
    Honestly I'd get a 29.2 - to - 27.2 shim and then use whatever post you want.

  7. #7
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    Quote Originally Posted by MidwestBike View Post
    Honestly I'd get a 29.2 - to - 27.2 shim and then use whatever post you want.
    Yes that was a plan of action, actually I have a thugbuster that I need to install in the back anyway..

    Do they make a 29.2mm or do i need to get them made...??

  8. #8
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    Re: Seat post diameter of a GT quatrefoil DX tandem...!?

    Quote Originally Posted by patineto View Post
    Yes that was a plan of action, actually I have a thugbuster that I need to install in the back anyway..

    Do they make a 29.2mm or do i need to get them made...??
    Don't have access to my catalogs right now (at home, on my phone), but I'm pretty sure they make a 29.2. I used a 28.6 - 27.2 on my Walgoose Beast. Should be $5-$10.

  9. #9
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    Quote Originally Posted by MidwestBike View Post
    Don't have access to my catalogs right now (at home, on my phone), but I'm pretty sure they make a 29.2. I used a 28.6 - 27.2 on my Walgoose Beast. Should be $5-$10.
    Thanks I will ask my favorite LBS to get me some..

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