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  1. #1
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    Fox RP-23 I to I lenght Size FTM

    Can anyone tell me what size RP-23 to get for the 2010 FTM? Website lists length as 195mm but this does not translate into a size that I see offered by Fox. Any comments or help is appreciated.

  2. #2
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    Is your frame carbon or alum.?

  3. #3
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    Frame is aluminum.

  4. #4
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    I thought the ML and FTM used a 7.875 X 2.0 shock (200mm X 50mm). No?

  5. #5
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    Aluminum frame takes a 7.875 X 2.00.

  6. #6
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    Thanks. And the size for the carbon frame is different?

  7. #7
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    Yes, the carbon 2010 frame takes a 7.875 x 48mm.

  8. #8
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    Quote Originally Posted by doralswheels View Post
    Yes, the carbon 2010 frame takes a 7.875 x 48mm.
    I don't think I ever heard of a 200X48mm shock! Very Specialized like!

  9. #9
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    Yes. That works out to 1.899....inches. Don't see them listed that way. And on the Titus site they offer the RS shock and have a selection for each frame but don't list the actual sizes.

  10. #10
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    The Titus site is down rite now, but when it comes back up there is a shock listing for a Rock Shock Monarch RT3 rear shock for each model. There is a click on tab ( it says spec) that lists the measurement of the shock. I have both a 2010 alum. and a 2010 carbon FTM. On my carbon bike, i have ran a Fox DHL 5.0 air rear shock that is 7.875 X 2.25. I jacked the boost valve and bottom out settings way up, so the rear tire did not hit the seat tube. I have since installed the Monarch RT3 from Titus and it works great. Very easy to set up and it gives a very good ride. On my alum. FTM, i am running a 7.875 X 2.25 Fox rp23 boost valve with a #2 extra high volume air can. This gets a smile on a 68 year old rider every time i ride it. There is a fork and shock site on mtbr that tells how to limit the travel on a rp23 to get the 48mm travel amount, but i can't find it right now. Hope this helps.
    Last edited by doralswheels; 06-13-2011 at 09:16 PM.

  11. #11
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    Thanks for the advice. When using the 48mm travel shock, what does the total rear travel decrease to? I would also like to know what difference in ride quality is for either material. In my area I really don't need 140mm of travel. 100 to 120 is good for most of the riding around here. But I am concerned about the druability of carbon so not sure which I want more. Weight not an issue but like the looks of the carbon better.

  12. #12
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    135mm for a 48mm travel rear shock. Mine feels alot like my 140mm travel alum FTM.
    Last edited by doralswheels; 06-13-2011 at 09:04 PM.

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