Trek KnockBlock 58-degree Headset Assembly

  Sorry! Trek KnockBlock 58-degree Headset Assembly is no longer available.

Trek KnockBlock 58-degree Headset Assembly


Trek proprietary headset components compatible with Trek Knock Block models. Genuine Trek replacement parts Service and replacement parts specifically for Trek Knock Block Technology. - Compatible with all Trek Knock Block models - Includes crown race, bearings, top cover, frame chip & fastener - Must be paired with Knock Block stem and Knock Block spacers - Knock Block headset spacers not included

Comment author

Richard Hyde

Hi, I have a Trek Procaliber 9.8, 2016 model. Could you please confirm that this headset would be a suitable replacement on my bike? Many thanks

Store Staff


Hi Richard

Apologies for the late response, we're getting through enquiries as quickly as we can.

This isn't the correct replacement for your Procaliber.

Do you need a full headset or just the top and bottom bearings replacing?