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  1. #1
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    Fox D.O.S.S adjustable seatpost thread

    Hi guys,
    Thought I would start a thread on the new Fox DOSS seatpost.
    I received mine a couple of weeks ago.

    I got this to replace my old (1st Gen) Reverb post. I still like my Reverb post but I got tired of the amount of play on the Reverb post had. Got a warranty job twice on it and I think its still leaking oil from the bottom plus it still sticks a little when going up.......Anyway.......

    The box. I bought a 30.9mm and 4" of travel.



    I'll start with the weight. Mine came in at 614.5g. Box standard.


    My old Reverb is lighter. 528.5g(30.9mm and 380mm) Of course its hydraulic so it should be.


    Being a weight weeine at heart. I started to save some weight on were I could.
    Changed the seat clamp bolts (They use the same 2pc bolts as Thomson does, just a little longer on the bolt).
    Changed both steel bolts on the handlebar clamp to alloy ones. Used jagwire (more for looks, to match my frame) and I used Power Corz to replace the steel cable. Final weight 562g Not too bad.


    A solid clamping system.




    Three positions. Fox call it CTD (Climb,Trail,Decend)
    I do like alot the fact it does have a set middle position. I use to always fiddle about trying to find a good middle position on the Reverb.

    Fully extended


    Midpoint drop (40mm)


    And all the way down...


    When I first saw the remote lever. It looked way too big and clumsy for me, coming from the reverb remote. Once I mounted on the handlebar, it start to make sense and the look grew on me. One of the things I loved about it was that you could mount it anywhere on the handlebar. Left,right, up, down and has a 3 position reach. It has two paddles. The inner one (black), when pressed it make the post drop 40mm only. The big silver paddle can also do this but if continued to be press it will drop down all the way. I can't see myself using the inner black paddle much as the outer paddle can function all the positions




    The three reach position







    And finally the speed in which it go's up. Fox says, to slow it down reduce the air press. Max. air presssure is 25psi. I have it around 18psi. As you see the video, I plan to reduces it even more.

    <iframe src="http://player.vimeo.com/video/43979062" width="320" height="480" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe>

    The post does feel very smooth, solid, secure and zero play which was one of my pet hates with my old post.
    I guess time will tell if Fox has a winner.
    Last edited by XgreygOOse; 06-13-2012 at 12:17 PM. Reason: Change of Title
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  2. #2
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    post a review after a few rides, i'm interrested in how it will be after a while.
    expensive cars are a waste of money. Expensive bikes...not so much!

  3. #3
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    Sweet review. Thanks a lot for the video and lots of pictures and unboxing.
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  4. #4
    Flying in High in the Sky
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    I thought it won't be out till 2013? Where did you get it? I've been wanting to get one!

  5. #5
    Flying in High in the Sky
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    Nvm, saw the price. I'll get one when im ready to trade in my left kidney.

  6. #6
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    Quote Originally Posted by James_spec View Post
    I thought it won't be out till 2013? Where did you get it? I've been wanting to get one!
    Quote Originally Posted by James_spec View Post
    Nvm, saw the price. I'll get one when im ready to trade in my left kidney.
    In HK, the international distributor where given 40pcs. My LBS pick up 10 of them.
    Agree, the price is abit high but after discount at my LBS it wasn't to bad. plus the LBS had a demo one and I got to play around with it. First impression was very good. Solid and zero movement around the post which my old one had alot of. I had to get one.
    Retail is around HK$3500 which is about US$450. I pick mine up for around US$345.
    Last edited by XgreygOOse; 06-13-2012 at 07:57 PM. Reason: Spelling error
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  7. #7
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    I was going to say that from your username and what I can see of your build (Enve, Formula, XTR) you're probably not put off by the fairly ridiculous price that Fox is charging for their dropper post...

    I'll be curious to see how the reviews shake out over the next few months. Thanks for posting.
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  8. #8
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    I've been a little on the fence about my dropper posts as of late. I enjoy both my Reverbs but intend on trying a new LEV or Kronolog. There is however, nothing about the Fox post that makes me want to pick one up.

  9. #9
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    What are the official requirements for service intervals?

  10. #10
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    Quote Originally Posted by bmxconvert View Post
    I've been a little on the fence about my dropper posts as of late. I enjoy both my Reverbs but intend on trying a new LEV or Kronolog. There is however, nothing about the Fox post that makes me want to pick one up.
    This, mostly, but am interested in the LEV only. I can't see how the DOSS gives any advantage FOR ME over the two very well functioning Reverbs in the house. The DOSS remote still looks cludgy, and the post end bits look nice and exposed with fidly little moving parts to get gunked up.

    The LEV or the Reverb Stealth (supposedly coming soon for non-OEM sale...) are really the only two to offer any improvements over what else is out there.

    Particularly the Reverb Stealth, assuming they really do have the kinks worked out. With its non-moving hose, not ripping the post end out gets rid of one of the issues some people have had anyhow.
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  11. #11
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    The video makes it look like an ejector seat, ouch!

  12. #12
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    anyone know the overall length of the fox? 400mm? longer? cant seem to find that anywhere...cheers

  13. #13
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    Will be possible use it with Joplin's remote lever???


  14. #14
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    Quote Originally Posted by Steve.E View Post
    The video makes it look like an ejector seat, ouch!
    The reason I will reduce to 10psi. The video was with only 20psi

    Quote Originally Posted by dropadrop View Post
    What are the official requirements for service intervals?
    Here you go.
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  15. #15
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    Quote Originally Posted by dRjOn View Post
    anyone know the overall length of the fox? 400mm? longer? cant seem to find that anywhere...cheers
    Overall length is 335mm with a minimum insert on 95mm
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  16. #16
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    Quote Originally Posted by Surfas View Post
    Will be possible use it with Joplin's remote lever???

    I haven't used this post before so I won't know. The DOSS remote is very simple. Basically it pulls the cable, very much like a trigger shifter. The spring load is pretty small.
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  17. #17
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    Should be renamed the Fox V.O.S.S .... Vasectomy On Steep Sh1t

  18. #18
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    sorry to be a pain: is that 335mm with 95mm in frame (so total would be 430mm similar to the reverb) or is the 335 a total length?

    if its the latter its too short for my uses! :-)~ thanks!

  19. #19
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    Quote Originally Posted by bmxconvert View Post
    I've been a little on the fence about my dropper posts as of late. I enjoy both my Reverbs but intend on trying a new LEV or Kronolog. There is however, nothing about the Fox post that makes me want to pick one up.
    Stay away from the Kronolog. I have personal experience with that item. If you choose to disregard, don't say you weren't warned.

  20. #20
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    Quote Originally Posted by dRjOn View Post
    sorry to be a pain: is that 335mm with 95mm in frame (so total would be 430mm similar to the reverb) or is the 335 a total length?

    if its the latter its too short for my uses! :-)~ thanks!
    The total allowed out the the frame would be 240mm (335mm minus 95mm)
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  21. #21
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    I'm super old and oldschool. And this was the first post I even thought about trying. But after seeing your video with the "ball killer" rise... I'm rethinking the whole post thing. OUCH. I'm sure I'd hit the thing and snag some ball!!
    "It looks flexy"

  22. #22
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    hey grey goose! thanks, if i understood the rep system thing id add one!....

    335mm, though, that is short. does it come in different lengths do you know? id need 400mm

    cheers!....

  23. #23
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    There's a 5" drop version.

  24. #24
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    an ebay seller suggests the length of a 5" version is 386mm....seems an odd choice?

  25. #25
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    just found this:
    Universal Cycles -- Fox Racing DOSS Adjustable Seatpost
    looks like 2 lengths for both drops - 335 or 386mm. nuts!

    if 386 is from saddle rail middle to the bottom of the post, minus 95mm is going to leave me 10mm too short......which would be a shame.
    Last edited by dRjOn; 06-16-2012 at 05:38 AM.

  26. #26
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    Quote Originally Posted by dRjOn View Post
    just found this:
    Universal Cycles -- Fox Racing DOSS Adjustable Seatpost
    looks like 2 lengths for both drops - 335 or 386mm. nuts!

    if 386 is from saddle rail middle to the bottom of the post, minus 95mm is going to leave me 10mm too short......which would be a shame.
    Yes, just saw that too. Once you put on your saddle, will that not cover the 10mm?
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  27. #27
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    unfortunately not...the measurements i need would include that....

  28. #28
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    Any updates?

  29. #29
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    I just installed the D.O.S.S. on my Scalpel 29 Ultimate. I looked at all the other options, my LBS veered me away from the Kronolog (which was my first choice) due to large number of returns. The Reverb was their #2 choice, but in the end I took the Fox as I liked the solid feel of action. I was put off by the large lever as the OP was, but after using it, it keeps out of the way, and I think will prove useful. Will update as I ride.

  30. #30
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    Have opportunity to get one....

    Anyone have a few more rides on this yet??? Im sold on it for the most part besides the lever but many are describing it as more useful then cumbersome. I ride an Intense Carbine with a triple up front so my lever would be up top :/ Let me know what everyone thinks....

  31. #31
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    I have about 3 rides a week for the past 4 weeks on mine. Lever mounted above the bar. The post just plain works! In fact, this seems to be the perfect post (except it is costly, although I got mine from bikebling for $380) Overall the post works exactly as it is suppose to. Locks in every position easily and has never done anything weird. Works just as it did when I put it on the bike! It is rock solid!

  32. #32
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    Cool sounds great! Ill have to pick one up for myself...I can get mine priced just a little bit better than what you got from a friend at a LBS near me so it wont be to bad I can get a couple more if anyone is interested PM me

  33. #33
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    Quote Originally Posted by spoovy View Post
    Will update as I ride.
    Did my first decent ride this morning. I have to say, this post is sweeeeet.

    I agree that although the lever is butt ugly, (a) it's actually pretty useful to have the two levers, and (b) it's not too big when you're riding.

    No play, good solid feel and action. No complaints so far :-)

    Also remember if you're in the Bay Area that SF/East Bay Bike Coalition members can get upto 15% off parts/accessories at participating bike shops - so takes the price down to around 370.

  34. #34
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    I guess the actual number of riders using these posts is still small since it is relatively new. I look forward to hearing more as more riders get them and give them real world testing.

  35. #35
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    Anyone have the critical measurement for both the 4" and the 5" models? The bottom of the "collar" to the seat rails.

  36. #36
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    Quote Originally Posted by in the trees View Post
    Anyone have the critical measurement for both the 4" and the 5" models? The bottom of the "collar" to the seat rails.
    Wasn't too sure what you meant so I took a quick pic for you.
    My DOSS post is
    -30.9mm and 4" of travel.
    -Overall length is 335mm with a minimum insert on 95mm
    -total allowed out the the frame is 240mm

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  37. #37
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    Just a quick update:

    I've had it for just over 2 months now. And done roughly over 700km. With gear I weigh 210lbs+
    Its has seen heavy rain/ tons of mud, two crashes and of course, lots of sunshine.

    So far absolutely zero problems and no play, which was one of my pet hates from my old (1st Gen) Reverb post.
    The lever was only part I didn't like but I'm happy with it now. Works smooth and liking very much the three levels of height control.

    IMHO this post is solid as, build very well and is going to last. I would be happy to buy another one again.
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  38. #38
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    Quote Originally Posted by XgreygOOse View Post
    Just a quick update:

    I've had it for just over 2 months now. And done roughly over 700km. With gear I weigh 210lbs+
    Its has seen heavy rain/ tons of mud, two crashes and of course, lots of sunshine.

    So far absolutely zero problems and no play, which was one of my pet hates from my old (1st Gen) Reverb post.
    The lever was only part I didn't like but I'm happy with it now. Works smooth and liking very much the three levels of height control.

    IMHO this post is solid as, build very well and is going to last. I would be happy to buy another one again.
    Not having any issues/problems is really what it's about with MTB, no? Who wants to "limp home" on their bike? nobody! Keep the reviews flowing please.
    "It looks flexy"

  39. #39
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    Got this from Fox this afternoon. Thought that others might find it helpful as well -

    http://service.foxracingshox.com/con...Spec_Rev_B.pdf

  40. #40
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    Well I just got this and it works nice, on the street. I will hit the trails in the morning and give it a real test. Any issues for other users yet?

  41. #41
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    380.00 for a seatpost??? Are we going collectively insane?!?!

    I have an EARLY Reverb ver1 that I paid just under $250 for and I thought that was outrageous. Mine is still going strong with no issues as mentioned by others. Head is still tight, no slop, no turning nothing. Still as solid as day 1.

    The only problem I have had is self-induced. I had a bad crash whilst lift-riding that tore the hose out of the remote. 11.00 bucks from Universal for a replacement hose and barbs. Less than 20 minutes to replace hose and bleed and I'm good to go.

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  42. #42
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    Quote Originally Posted by mykel View Post
    380.00 for a seatpost??? Are we going collectively insane?!?!

    I have an EARLY Reverb ver1 that I paid just under $250 for and I thought that was outrageous.
    michael
    Check the MSRP on the RockShox Reverb. No one 'needs' a dropper post, this isn't food or shelter, the pricing is based on what the market will bear. Maybe you won't pay it, just realize that you DID pay 10x more than you 'needed' to for a seatpost already (a conventional post can be had for $25) but plenty of others will.

  43. #43
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    Quote Originally Posted by mykel View Post
    380.00 for a seatpost??? Are we going collectively insane?!?!

    I have an EARLY Reverb ver1 that I paid just under $250 for and I thought that was outrageous. Mine is still going strong with no issues as mentioned by others. Head is still tight, no slop, no turning nothing. Still as solid as day 1.

    The only problem I have had is self-induced. I had a bad crash whilst lift-riding that tore the hose out of the remote. 11.00 bucks from Universal for a replacement hose and barbs. Less than 20 minutes to replace hose and bleed and I'm good to go.

    michael
    If you don't like it, don't buy it. The price for bikes is over the top too if you think about it you can buy a used vehicle for 5000$ or a bike. You got a deal on your reverb and last I checked it was my hard earned money not yours

  44. #44
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    Well after 10 hours of use mine started to have play and I returned it to much money to not be happy with product. Hope every one else is trouble free

  45. #45
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    I got mine when they first released and it is still going strong after miles and miles of tough riding.

  46. #46
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    I was able to get one hell of a deal on this seat post from a local dealer, so the ultra high price didn't hit me. I've ridden it for a month now, and it has been passed between my all mountain bike and my downhill rig repeatedly. Overall, I love it. Its been very reliable, and is almost intuitive after a few rides. Just dont make the same mistake I did and hit the release while not having weight on the seat. It flys up at mach 2 and is more effective than most modern birth control.
    Last edited by Slimdunham; 08-14-2012 at 08:24 PM. Reason: mispelling

  47. #47
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    Who's running this post with both front and rear shifters? I see where the lever would make a lot of sense, if you're running a 1x setup, but it doesn't look optimal for 2x or 3x setups.

  48. #48
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    I ran it with a 2x10 drivetrain. It was a little weird on top of the bars as it stood up kind of high but it worked fine and didn't get beat up in the crashes. However I have since gone to 1x10 and it is really perfect set up in the shifter position. Either way worked fine but I will admit the 1x10 is cleaner looking.

  49. #49
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    sorry for the dumb question, but can I paint the retractable part in black?

    i just really hate the color!! Kashima was the biggest lack on this post!

  50. #50
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    Just to add to the reviews. I rode a DOSS for 3 days over the weekend. Coming off a Reverb and a Joplin for what it's worth.

    Short story, it's a decent post but I'd never buy one. That remote is terrible!! Tolerable if you don't run a front der, but having it above the bar is cumbersome at best. I also found the small black lever (1" drop) required way too much thumb force due to it's short length (and I have pretty big hands too, so can't imagine how smaller people could enjoy it)

    Finally, after coming from infinitely adjustable posts I was curious how the 1" drop option would be. I've got to say it's ok, but honestly wasn't enough for me. On those fast sweepy downhills where I still need to pedal, the saddle was still in the way, so I ended up using the full drop and just standing up more. I'm 6'5" though so it might work great for smaller people.

    The weight is also a big negative for me, when most of the competitors are more than 100g lighter, and just as good. I'd rather save that weight and add it back in my tires, where I really notice the difference.

    I'll probably buy the KS Lev instead.

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