Join Date: Jun 2010
Location: NW,Oregon Coast
Mentioned: 6 Post(s)
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yea , ID is inside, OD is out side, tube's wall thickness is in between them .
the headset crown race seat is bigger than the steerer OD,
for some metal to be there for final machining of the seat site..
my bike friday uses a King headset for 1.125" OD threaded steerers.. it is their Grip nut type.
regular 2 nut types there is interchangeability on the threaded or un-threaded type,
the part that meets the bearing on top, so the headsets can be switched over.
Last edited by fietsbob; 11-21-12 at 11:57 PM.