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Thread: EC44/40 Headset

  1. #1
    mtbr member
    Join Date
    Sep 2010

    EC44/40 Headset


    Has any one used the Cane Creek EC44/40 heaset to fit a tapered fork into a straight 1 1/8 designed headtube? If so, how does it work?

    This may be the answer to fit the 650b tappered forks to old style 1 1/8 designed bikes.


  2. #2
    From Russia with luv!
    Reputation: Triton Bikes's Avatar
    Join Date
    Jan 2010
    What's the ID (inner diameter) of your headtube? If it's 44mm, then you will be able to use tapered fork with EC44 headset.
    If it's a classic MTB 34mm ID headtube, then EC44 won't fit.
    And also, sterere won't fit.


    PS: What's the frame? Take a picture and post here, this might help

    Titanium frames and components handbuilt in Russia

  3. #3
    nothing relevant to say
    Reputation: Cracked Headtube's Avatar
    Join Date
    Apr 2006
    Sadly, your thinking is a bit skewed. The 44 designates the headtube ID. The 40 designates the crownrace of the fork. This lower headset cup is for a tapered fork and 44mm (ID) headtube.
    A traditional 1.125 headtube has an ID at 33.95mm which equals EC34, per the S.H.I.S .

    A Zero-Stack or Semi integrated headtube for 1.125 has an ID 43.95, and COULD accept the EC44 lowercup. if the headtube has a cup-depth ability of at least 12.5mm, where 15 is safer.

    Cane Creek has some great Tech Manuals located HERE

  4. #4
    mtbr member
    Join Date
    Sep 2010
    It is a 2011 Specialized Camber with ZS 44 mm headset, so it seems the EC44 would work. I just read in this link

    I need your opinions on my fork

    that: "Nominal insertion bore depth for 44mm head-tubes is 9mm. EC44/40 requires an insertion depth of 15mm. Park Tool Reamer 788 should be used with the supplied spacer to reach the 15mm bore depth for EC44/40 Bottoms. " so I need to check if this reaming would be needed as well.

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