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  1. #1
    n8_ is offline
    mtbr member
    Join Date
    May 2013

    Mach 5.7 dropper seatpost length

    I have a medium framed 26er 5.7 that I think I'm ready to get a dropper seatpost for. I was curious what length seatpost people have gone with. I find with this bike/frame I like to have a pretty high post when riding but want to drop it pretty low when it's dropped. I was thinking the 350mm posts are the right size for this bike but I wasn't sure.

  2. #2
    mtbr member
    Join Date
    Mar 2010
    What you need to do is measure the amount of exposed seat post you currently have.

    Then make sure that the dropper you are looking at has

    A: Enough length exposed for the dropper to fit (shouldn't be a problem on medium)

    B: That the dropper will reach its minimum insertion into the seat post.

    You should be able to get these measurements from the suppliers websites (hopefully) or ask the suppliers to measure it for you, this is what I had to do when I got my reverb, I only had about 5mm to spare on my old frame between the seat tube and the mechanism on the seat post. Where as if I had got a medium 5.7c instead of a large, the post would have sat past the minimum insertion mark!.

    If you do have a lot of room to play with you might want to consider The KS LEV with 150mm drop over the more usual 125mm drop of most others.

  3. #3
    mtbr member
    Join Date
    May 2005
    I am 5'9''. KS lev 100mm on 5.7 alu médium.

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