Genuine Hope convential headset bottom cup for 2007 headsets and onwards.
Sizing
Cup A = EC34/30
- 34mm lower headtube diameter
- 30mm crown race seat diameter for 1 1/8″ steerer tubes
Cup H = EC44/40
- 44mm lower headtube diameter
- 40mm crown race seat diameter for 1 1/8″ to 1.5″ tapered steerer tubes
Cup F = EC49/40
- 49mm lower headtube diameter
- 40mm crown race seat diameter for 1 1/8″ to 1.5″ tapered steerer tubes
EC = External cup (Traditional)



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