Knock Block 72-Degree Headset Upper 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 /> - 72-degree headset fits 2021 Slash 29<br /> - Includes bearing 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