Trek Knock Block 72-Degree Headset Assembly with Display Chip 28.6mm (1-1/8˝) Black Default:Default Rear caliper bolts not included

Rear caliper bolts not included due to varying chainstay thickness requirements

Includes 5 hardened collets

Retail packaging is not included

5-meter roll for multiple applications

ensuring quiet operation

Trek Knock Block 72-Degree Headset Assembly with Display Chip 28.6mm (1-1/8˝) Black Default:Default Rear caliper bolts not includedHeadset Trek Knock Block 72 Degree Assembly W Display Chip Genuine replacement parts Service and replacement parts specifically for Trek Knock Block technology. Get your bike back on the trail with the headset parts you need. Key Features 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