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Headset 46mm or 50mm O/D Headtube?

Pantani98Pantani98 Posts: 79
edited June 2011 in Workshop
I need to replace my FSA Orbit CE Plus headset on my 2008 Bianchi 928 Carbon.

The headsets come in two sizes for 46mm and 50mm O/D Headtube.

Can someone tell me which I need? And whether or not I need an 8mm or 15mm stack height?


  • Monty DogMonty Dog Posts: 20,614
    Measure your frame?

    The stack height refers to height of the top race cover i.e the bit that fits on top of the bearing and undernesth the stem.
    Make mine an Italian, with Campagnolo on the side..
  • Pantani98Pantani98 Posts: 79

    Can't believe it was that obvious. Feel a bit foolish now.

    Measures up for a 46mm.

    Thanks for the advice.
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