Knock Block Headset Upper crank spider Intended for restocking Body Geometry

Intended for restocking Body Geometry Fit stations

Forged and machined from 6061 aluminum

Stay refreshed and replenish what you lose through sweat with Rapid Hydration—a clean

the bag attaches in seconds to any bike

and capitalizes on our decades of carbon fiber experience to deliver precise control and exceptional comfort

Knock Block Headset Upper crank spider Intended for restocking Body GeometryWolf 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