Skip to main content

Wolf Tooth Premium Knock Block Headset Upper

Wolf Tooth Premium Knock Block Headset Upper
  • Color: Black
  • Color: Blue
  • Color: Orange
  • Color: Red


Wolf Tooth Precision Headsets for Trek Knock Block are machined in the USA out of aircraft grade aluminum with superior sealing for protection against the elements. Available in a variety of colors to add some style to your bike. These upper headsets are for Trek frames with molded-in internal bearing cups.

- Designed to work with Trek's Knock Block system
- The top cap on these headsets have unique raised features that key to Knock Block compatible stems (made by Bontrager
- If spacers are needed, you will need to use special Knock Block compatible spacers with notch features
- This product is the upper headset only
- Lower headsets on bikes with Knock Block do not have any unique features. They are usually IS headsets which are available separately

Part Numbers

Option UPC MPN Store SKU
Black 810006802689 IS41U-8MM-KNOCK-BLK HEA44811215K
Blue 810006802696 IS41U-8MM-KNOCK-BLU
Orange 810006802726 IS41U-8MM-KNOCK-ORG
Red 810006802702 IS41U-8MM-KNOCK-RED