Trek Knock Block Headset Top Cover with Display Chip 820-07-191 This way a thermoplastic

This way a thermoplastic

Developed for maximum durability

your eBike's motor assistance system cannot accurately read wheel speed

Features the following sizes — measure to be sure you are using the correct wrench for your wheel

Select a 27

Trek Knock Block Headset Top Cover with Display Chip 820-07-191 This way a thermoplasticAssembly includes bearing cover, frame chip & fastener 62 degree headset fits 2020 & 2021 Supercaliber, and 2021 Procaliber 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