Wolf Tooth Headset Upper Knock Block - 28.6, 8mm, Black Water Bottle Cages UPC: 840031600776

UPC: 840031600776

UPC: 765250191020

- Inboard sealed cartridge bearing combined with outboard IGUS bushing

saving you from awkward maneuvering and sketchy descents

Wolf Tooth Headset Upper Knock Block - 28.6, 8mm, Black Water Bottle Cages UPC: 840031600776Wolf 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