Wolf Tooth Headset Upper Knock Block - 28.6, 8mm, Black Water Bottle Cages 145900-Q4-L33A02

145900-Q4-L33A02

Update: Kit has been updated to only include main pivot bearings and chainstay bearings

163560-Q0-L

UPC: 689228870710

KL1016 BR5575 120127

Wolf Tooth Headset Upper Knock Block - 28.6, 8mm, Black Water Bottle Cages 145900-Q4-L33A02Wolf 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