Wolf Tooth Headset Upper Knock Block - 28.6, 8mm, Red Hex/Torx/Nut Wrenches - Machined 6061 aluminum in

- Machined 6061 aluminum in anodized red

162091-Q0-L

- HYPR is a full silica compound

Manufacturer Part Number: QSMSEAL/

- Includes carbon look

Wolf Tooth Headset Upper Knock Block - 28.6, 8mm, Red Hex/Torx/Nut Wrenches - Machined 6061 aluminum inWolf 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