Genuine Hope 1.5″ convential headset top cup for 2007 headsets and onwards.
Sizing
Cup 1 = EC34/28.6
- 34mm upper headtube diameter
- 28.6mm stem clamp diameter for 1 1/8″ steerer tubes
Cup 6 = EC49/38.1
- 49mm lower headtube diameter
- 38.1mm stem clamp diameter for 1.5″ steerer tubes
EC = External cup (Traditional)



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