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  1. #1
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    Fork for 2014 Instinct

    I had a chance to demo the instinct and had a good time with it. Im thinking of building up a frame and would like to put a rockshox pike on the front. What is the consensus on a 140mm vs 150mm fork on this frame. I have heard that the pike has a shorter axle to crown than the fox 34 and so i wondered if a 150 would be ok even though rocky specs the bike with 130-140 fox forks. My concern with a 150 is that the bike might not feel balanced with the 130 out back. Thoughts? Thanks in advance.

  2. #2
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    Axle to Crown:

    Pike 150mm: 561.0mm
    Original Fox 32(!) 130mm used on Instinct 2014 MSL:: 530.8mm
    Attached Thumbnails Attached Thumbnails Fork for 2014 Instinct-2014_fox_32_29in_44mm_rake_user_spec_revb.jpg  

    Fork for 2014 Instinct-2014_fox_34_29in_user_spec_reva.jpg  

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  3. #3
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    Interesting, Fox does a 44mm and 51mm rake 29er fork, and Rock Shox does a 46mm and 51mm rake fork. I wonder what the fork spec should be for the Instinct?
    I'm a member of NSMBA and IMBA Canada

  4. #4
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    I was thinking of comparing the pike to the fox 34 rather than the 32. The 34 in a 140 has an axle to crown of 553mm.

  5. #5
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    All the Instinct models use 32mm x 130mm forks, so that 530.8mm A2C would be your reference fork height.
    I'm a member of NSMBA and IMBA Canada

  6. #6
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    Fork for 2014 Instinct

    Quote Originally Posted by rockyuphill View Post
    All the Instinct models use 32mm x 130mm forks, so that 530.8mm A2C would be your reference fork height.
    Except BC Edition with 34 Fox. ;-)

    Maybe i am wrong, but in my opinion the Instinct with 150mm front is too high and will loose all his great uphill Performance and "flowy" characteristics.

    I go with Rockyuphlll and the 530.8 reverence...

  7. #7
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    Thanks....I'm pretty much looking for a BC edition type build with different components so I thought I would just get the frame. It sounds like the pike 140 would be the way to go. I was talking with a buddy and the rocky dealer owner and they both recommend the 150 based on my desired intent. I too thought that doing that may sacrifice the bikes all around capabilities even with a zero stack headset and the stem installed low against the top tube. Thanks for the responses.

  8. #8
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    I found out some useful info.

    The 130mm travel Instincts use a 32mm fork with 44mm offset (rake).

    The 140mm x 34mm fork on the BC edition uses the 51mm offset (rake) to speed up the handling to compensate for the longer travel.
    I'm a member of NSMBA and IMBA Canada

  9. #9
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    Did you ever get your bike sorted with the pike? I'm looking at doing the same with the 140mm 51mm offset.

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