Trek Knock Block Headset Assembly with Display Chip Color:Black Spherical Technology's Ball-and-Socket design

Spherical Technology's Ball-and-Socket design

The ergonomic design makes the tool as easy to use as it is to carry

Fender/Rack & Kickstand Option

and for all kinds of riding

The Orca OMX uses a unique integrated seatpost design rather than a standard external clamp

Trek Knock Block Headset Assembly with Display Chip Color:Black Spherical Technology's Ball-and-Socket designTrek proprietary headset components compatible with Trek Knock Block models 58 degree headset fits all 2017 2020 Knock Block equipped models Includes crown race, bearings, top cover, frame chip & fastener Frame chip has display tabs to connect Bosch Kiox Mount sold separately Must be paired with Knock Block stem and Knock Block spacers Knock Block headset spacers not included