Knock Block 58-Degree Headset Assembly with Display Chip

Service and replacement parts specifically for Trek Knock Block technology.<br /> - Trek proprietary headset components compatible with Trek Knock Block models<br /> - 58-degree headset fits all 2017-2020 Knock Block equipped models<br /> - Includes crown race, bearings, top cover, frame chip & fastener<br /> - Frame chip has display tabs to connect Bosch Kiox Mount sold separately<br /> - Must be paired with Knock Block stem and Knock Block spacers<br /> - Knock Block headset spacers not included