How critical is max disc brake size on fork?- Mtbr.com
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  1. #1
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    How critical is max disc brake size on fork?

    I am about to pull the trigger on a new SID xx and noticed the max front disc size is spec'd at 185 but my bike runs a 203, do I need to swap to 185 or not worry about it?
    Hardrock 29er, Niner EMD9, Cannondale F29, Camber Expert, 650b Nickel all gone.
    2014 Giant Anthem 27.5 here.

  2. #2
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    I would swap back to the 185 mainly for warranty and liability reasons.

  3. #3
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    On the SRAM website it shows the SID XX for max rotor size of 203. Are you buying an older version?

  4. #4
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    I'm buying a 2011, the new 2012 lowers are shaved down version of the 2011 so if they can handle 203 then the 2011 can as well.
    Hardrock 29er, Niner EMD9, Cannondale F29, Camber Expert, 650b Nickel all gone.
    2014 Giant Anthem 27.5 here.

  5. #5
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    Quote Originally Posted by madsedan View Post
    I'm buying a 2011, the new 2012 lowers are shaved down version of the 2011 so if they can handle 203 then the 2011 can as well.
    IMO, they build so much liability headroom into components....i tend to ignore. The fork I've run for 8 years says max of 185mm. I've run (HARD) 203mm for all of those years; and, I'm 240 pounds. YMMV

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