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I want to install a carbon fork into my 2011 Specialized Sirrus entry level

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I want to install a carbon fork into my 2011 Specialized Sirrus entry level

Old 10-21-13, 10:15 PM
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Redbikeman
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I want to install a carbon fork into my 2011 Specialized Sirrus entry level

the ridley oryx fork red/white 1202a is listed as a taper fork. I want to know can I install this fork into the 2011 Specialized Sirrus if the head tube is tapered or not.


Thank you for any help.
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Old 10-21-13, 10:16 PM
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will I need to buy another headset?
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Old 10-21-13, 11:10 PM
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techsensei
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According to Specialized spec's for all models of Sirrus bikes, none use a tapered head tube. So no, that fork would not work. You can only fit a fork with a straight 1 1/8" steering tube.
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Old 10-22-13, 01:12 AM
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jimc101
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The Sirrus has a ZS headset, so you could use a ZS to EC converter, which allows , you to run a tapered steerer in a non-tapered headtube. Canecreek makes these.
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Old 10-22-13, 08:21 AM
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Originally Posted by jimc101 View Post
The Sirrus has a ZS headset, so you could use a ZS to EC converter, which allows , you to run a tapered steerer in a non-tapered headtube. Canecreek makes these.
Showing my ignorance of what is available. So...to the OP, you could get this to replace the lower headset pieces and run the tapered fork: http://www.amazon.com/Cane-Creek-40-.../dp/B004JKESEQ. The only downside I see to doing this is that the headtube angle will change slightly, but chances are you would never notice any difference in handling. You would need to make sure the for you want to install has a long enough steerer tube; you would probably need to have about 10mm more if you ran an external cup on the bottom.
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