Wolf Tooth Headset Upper Knock Block - 28.6 8mm Black
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Wolf Tooth Precision Headsets for Trek Knock Block are machined in the USA out of aircraft grade aluminum with superior sealing for protection against the elements. Available in a variety of colors to add some style to your bike. These upper headsets are for Trek frames with molded-in internal bearing cups.Designed to work with Trek's Knock Block system The top cap on these headsets have unique raised features that key to Knock Block compatible stems (made by Bontrager If spacers are needed you will need to use special Knock Block compatible spacers with notch features This product is the upper headset only Lower headsets on bikes with Knock Block do not have any unique features. They are usually IS headsets which are available separately
| Bearing Type | Cartridge |
| Color | Black |
| keyword search | Trek Knock Block |
| Upper Stack Height | 8 |
| S.H.I.S. Stem Clamp Diameter | 28.6 Threadless |
Shipping Policy
Components:
All component items (wheels, drivetrains, suspension, brakes, etc.) ship within 1–4 business days of purchase.
Bicycles:
Complete bikes typically ship within 2–3 weeks due to build, tuning, and inspection times. You will receive tracking information as soon as your order is ready to ship.
Riding Gear & Apparel:
Riding gear and apparel orders (helmets, jerseys, gloves, etc.) ship within 1–3 business days.
Returns & Exchanges:
If you received the wrong size or wish to exchange an item, it must be returned in original condition—unused, uninstalled, and with all packaging intact.
For full details, please see our Refund Policy before initiating a return.