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Headset Part Trek Knock Block Spacers 3 x 10mm 1-1/8in Black


Availability: In Stock

Trek Knock Block Headset Replacement Parts

  • Replacement headset parts for your Knock Block system
  • The Lockring Spacer allows use with non-Knock Block-compatible stems
  • During an overhaul, it's best to replace all Knock Block components and bearings