Any idea what kind of headset this is - is it 44mm?
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Specialized list it as "Integrated Alloy cups" - do the bearings just drop into the frame?
http://www.specialized.com/us/en/bikes/archive/2007/stumpjumperfsr/stumpjumperfsrprocarbon#specs
If there is an alloy cup round the bearing and the whole lot is sucken into the head tube ?
Then it maybe a specialised mindset.
But can't tell from those pics
Somthing like this
http://www.edinburghbicycle.com/products/specialized-mindset
Don't have the frame to hand, bt will be dismantling one to put another bike together, and am trying to figure out what I have to work with
