The 10 uses plastic for the bearing race IIRC, I'm sure you'll prove me wrong!
You can replace it with an aluminium one if it bothers you. The original Chris King threadless headsets didn't have a compression ring at all and you were all fawning over them in 2007 🙂
Not me, was still with either Tange or Shimano in 2007... ;)
@gbj_tester started
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The 10 uses plastic for the bearing race IIRC, I'm sure you'll prove me wrong!