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  1. #1
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    Specialized Bikes - Can you replace rear brain style shock?

    Hi all,

    Just had a question about the Specialized brain. If you have a brain equipped Spesh, can you at any stage replace the Fox rear shock with a normal shock like a Fox rp23 or Monarch? Or are you literally stuck with the brain?

  2. #2
    The Other Dude
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    depends on the bike, if its a stumpy you can replace it, i think if its an epic, the brain is the only one that will fit. But the brain is great shock to be "stuck" with
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  3. #3
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    The brain is one of the biggest reasons to get a bike equipped with one. If you don't want the brain you should look for a bike without one.
    "Donuts. Is there anything they can't do?"

  4. #4
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    Is there anyone on this forum who's been able to change the Fox/Specialized rear shock for a normal Fox shock? Is the shock length on the Stumpy FSR Brain the same as a normal shock?

  5. #5
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    Quote Originally Posted by Naveed
    Is there anyone on this forum who's been able to change the Fox/Specialized rear shock for a normal Fox shock? Is the shock length on the Stumpy FSR Brain the same as a normal shock?
    You can always go measure the eye to eye distance and then check the website for anything that matches.

    I used to have an Epic with a Brain and from what I recall, I would imagine you could find a shock with same eye to eye and stroke, but the main concern would be diameter of housing and whether there would be interference.

    Also, why do you want to replace it? Did your brain stop working? Is it stupid?
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  6. #6
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    Tirider,

    Thanks for your answer, I've ordered a Spesh 29er FSR and am a bit worried about the Brain. If it developes any issues or I don't like it, I'd like the option of using another shock. Also I'm worried about the shock developing a fault and maybe Spesh will have stopped making that shock due to new models and I'm left with an obsolete bike.

    I like the idea of having a bike that I can chop and change (one where I'm not too locked into the company and its products)

  7. #7
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    Shocks come in different lengths and travel, so there's no normal shock.

    Please check the specs at:
    http://www.foxracingshox.com/bike/10/shocks/FLOAT

    To answer your question, yes, you can. All you have to do is remove your shock and Brain and install a shock with the same length shock (eye-eye) and travel, and actually you don't even have to do that, but your bike not ride as designed.

    Not sure why you would want to down grade ( IMO ), but it's your bike..

    Good luck with whatever you do...

    Oh yeah, will you send me your shock and Brain if you're not going to use it?



    Quote Originally Posted by Naveed
    Is there anyone on this forum who's been able to change the Fox/Specialized rear shock for a normal Fox shock? Is the shock length on the Stumpy FSR Brain the same as a normal shock?
    Hope Pro II hubs save lives.

  8. #8
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    Ah! You posted this while I was typing...

    Don't worry about the Brain. It's been since 2003 or 2004 ( maybe earlier, don't recall ) and it's good stuff. It's not going anywhere..


    Quote Originally Posted by Naveed
    Tirider,

    Thanks for your answer, I've ordered a Spesh 29er FSR and am a bit worried about the Brain. If it developes any issues or I don't like it, I'd like the option of using another shock. Also I'm worried about the shock developing a fault and maybe Spesh will have stopped making that shock due to new models and I'm left with an obsolete bike.

    I like the idea of having a bike that I can chop and change (one where I'm not too locked into the company and its products)
    Hope Pro II hubs save lives.

  9. #9
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    Thanks Anthony, really helpful answer. I guess I'm just paranoid about some products that are unique to manufacturers and their phasing in and out of products. I've only heard about great things regarding the current generation of FSR Brain technology so it should be fine. Just remembered having a Cannondale with loads of headshock issues and I was kind of stuck with it and the stem.

    Quote Originally Posted by anthony_coley
    Shocks come in different lengths and travel, so there's no normal shock.

    Please check the specs at:
    http://www.foxracingshox.com/bike/10/shocks/FLOAT

    To answer your question, yes, you can. All you have to do is remove your shock and Brain and install a shock with the same length shock (eye-eye) and travel, and actually you don't even have to do that, but your bike not ride as designed.

    Not sure why you would want to down grade ( IMO ), but it's your bike..

    Good luck with whatever you do...

    Oh yeah, will you send me your shock and Brain if you're not going to use it?

  10. #10
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    FYI Specialized have a very good shock replacement policy for the original owner.

    I recently got a brain replaced on a 2007 S Works epic. I just had to cover the shipping.
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  11. #11
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    Dear All. I am interested in anyone has anymore info on installing a non-specialized brain shock in an EPIC 29er.

    The background is that I have just sent my brain shock off for its factory service. In Australia the turnaround on these is about a month (and $250 + shipping + labour for the service).

    I am looking into options to keep my bike on the road in the mean time.

    My shock has an eye to eye distance of 187 mm (or 7.36 inches) and travel of 48 mm (or 1.85 inches).

    There seem to be a few other shocks out there in a 190mm by 50 mm formate. For example, DT Swiss or X Fusion). This seems incredibly close (only out by 3 mm on each measurement). Has anyone tried fitting one?

    Thanks

    Alexander

  12. #12
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    There is a thread somewhere on mtbr about a guy who successfully retrofitted a regular Fox rear shock. If memory serves it was just a bit longer.............happy searching! The Specialized forum might be a good starting place.
    The drive towards achievement and success is the motive power of civilization.

  13. #13
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    thanks

  14. #14
    turtles make me hot
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    I'm your boy.
    I originally had an 08 Stumpjumper FSR 29er with that cool Army paint job. It had a brain.
    One day, about a year in, the chainstay broke on a ride. When I removed it to replace it, I discovered the frame was cracked as well. Specialized said it was a heat treat issue and gave me an 09 frame with a Fox Triad. I still wanted to use my brainshock because it works really well. They gave me an 08 chainstay for the 09 frame.
    Now, what I do is run one shock and chainstay until it's time for a service and then swap on the other and get the other used shock serviced. The brain and the triad both work well. I like the brain a tiny bit better.
    I like turtles

  15. #15
    NedwannaB
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    Quote Originally Posted by NYrr496 View Post
    I'm your boy.
    I originally had an 08 Stumpjumper FSR 29er with that cool Army paint job. It had a brain.
    One day, about a year in, the chainstay broke on a ride. When I removed it to replace it, I discovered the frame was cracked as well. Specialized said it was a heat treat issue and gave me an 09 frame with a Fox Triad. I still wanted to use my brainshock because it works really well. They gave me an 08 chainstay for the 09 frame.
    Now, what I do is run one shock and chainstay until it's time for a service and then swap on the other and get the other used shock serviced. The brain and the triad both work well. I like the brain a tiny bit better.
    They're looking for shock switch on a late model Epic, not Stumpjumper. Different animal.
    Wait,who did he tell you that?....

  16. #16
    turtles make me hot
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    Quote Originally Posted by JMac47 View Post
    They're looking for shock switch on a late model Epic, not Stumpjumper. Different animal.
    Look at me tryin' to be all helpful.
    I like turtles

  17. #17
    NedwannaB
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    Maybe in here:

    Quote Originally Posted by Alexander.Austin View Post
    Dear All. I am interested in anyone has anymore info on installing a non-specialized brain shock in an EPIC 29er.
    Hit the highlighted link in the 2nd post from WR for more specifics:

    2011 Epic 29 sworks rear shock replace ( no brain)

    Here is the detailed list I found using the search function. You can sift thru and pick out the ones that pertain to your specific year Epic topic:

    http://forums.mtbr.com/search.php?searchid=210763
    Wait,who did he tell you that?....

  18. #18
    NedwannaB
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    Quote Originally Posted by NYrr496 View Post
    Look at me tryin' to be all helpful.
    It was, and will be for others looking to upgrade their Stumpy!
    Wait,who did he tell you that?....

  19. #19
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    I did not like my 11' SJ FSR rear shock because it was not very plush. My Spearfish with 80mm of travel actually felt better in many cases, even with the Brain Fade left wide open. I took it in to my lbs (Concept Store) and had it s-tuned for better shock absorption. I don't think it lost much of anything on the ups and I am much happier with it on the down.

    After test riding some VPP and DW bikes, I really do not think that it is the best bike for my local trails and riding style. I look forward to buying something like mach 429c in the near future, but will be keeping and upgrading the FSR as more of a Shuttle/AM bike starting with the new Pike fork because I love how it descends. The Spider Comp, Carbine, Tracer, Horsethief, and Trance x29 haven't gotten me to think twice about keeping it around for a long time to come. It would be great to gain some stiffness and drop some weight by going carbon, but the cost/return ratio isn't palatable and I actually really like it how it is.

    Tl;dr- One option you also have is to go through Specialize's 'S-tune' process. Look it up, here's a start: http://www.specialized.com/OA_MEDIA/pdf/FM0261_revC.pdf

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