Trek Knock Block 72-Degree Headset Assembly with Display Chip

Service and replacement parts specifically for Trek Knock Block technology.

Genuine replacement parts
Get your bike back on the trail with the headset parts you need.

- Trek proprietary headset components compatible with Trek Knock Block models
- 72-degree headset fits 2021 Slash 29
- 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