Headsets

IS headsets are for frames with molded-in internal bearing cups.

Premium Headsets with Enduro stainless steel bearings have a lifetime warranty.

Wolf Tooth headsets are machined in the USA with aircraft-grade 6061 aluminum. Our headsets have three levels of superior custom sealing to protect bearings from the elements and prolong the life of the headset. They are designed to be lightweight, strong, and durable.

Compatibility

- Any frame that uses IS (Integrated Standard) headsets with 41mm upper and 52mm lower outer bearing diameter
- Uppers and Lowers sold separately

Wolf Tooth Premium Headsets for Trek Knock Block are machined in the USA out of aircraft-grade 6061 aluminum with superior sealing for protection against the elements. Available in a variety of colors to match the style of your bike. These upper headsets are for Trek frames with molded-in internal bearing cups.

NOTE: These headsets are to be used only with Trek Knock Block system

rek developed Knock Block as an integrated frame protection system to prevent self-inflicted scuffs, dents, or cracks from spinning handlebars. Knock Block consists of a special stem and stop chip on the frame. The stop chip limits the turning range of the custom keyed headset cover. The top of the headset cover has notches that lock into corresponding notches on the headset spacers which also correspond with notches in the stem for the strongest connection to the steer tube. These parts work together to prevent the crown of the fork and the handlebar controls from hitting the frame.

Compatibility

- Designed to work only with Trek 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

Lower headsets on bikes with Knock Block DO NOT have any unique features, as they are usually IS headsets that are available separately.

ZS headsets are for frames with internal bearing cups that are pressed into the frame.

Premium Headsets with Enduro stainless steel bearings have a lifetime warranty.

Wolf Tooth headsets are machined in the USA with aircraft-grade 6061 aluminum. Our headsets have three levels of superior custom sealing to protect bearings from the elements and prolong the life of the headset. They are designed to be lightweight, strong, and durable.

Compatibility

- Any frame that uses ZS (Zero Stack) headsets with 44mm upper
- Uppers and lowers sold separately.

ZS headsets are for frames with internal bearing cups that are pressed into the frame.

Premium Headsets with Enduro stainless steel bearings have a lifetime warranty.

Wolf Tooth headsets are machined in the USA with aircraft-grade 6061 aluminum. Our headsets have three levels of superior custom sealing to protect bearings from the elements and prolong the life of the headset. They are designed to be lightweight, strong, and durable.

Wolf Tooth Premium Internal Headsets for ENVE IN-Route System are designed and machined in Minnesota headquarters with aircraft-grade 6061 aluminum. They are designed to have an ultra-low stack height, to be lightweight, and durable. Wolf Tooth headsets have three levels of industry-leading custom sealing to protect bearings from the elements and prolong the life of the headset. Available in a variety of colors. Premium Headsets with Enduro stainless steel bearings carry a lifetime warranty.

COMPATIBILITY

- Designed for the ENVE IN-Route System with a 44mm straight headtube and a 1-1/8” to 1.5” tapered steerer tube (FITS ONLY ENVE In-Route System)
- Use top cap and split spacers provided with ENVE stems and one-piece cockpits.
- Use the compression plug that comes with your fork.
- Sold as a complete upper and lower EC44 Headset.
- Enduro stainless steel bearings included.
- Two 0.5mm spacers are included to dial in headset compression if necessary.

TECH SPECS

Material: 6061 Aluminum

Dimensions:

- Total Stack Upper Headset - 15.8mm
- Total Stack Lower Headset - 12.25mm
- For Headtube Internal Diameter - 44mm
- Cup External Diameter - 56.5mm

WEIGHTS:
Upper Headset - 69g
Lower Headset - 47g
Complete Headset - 116g

FEATURES

- Premium Enduro stainless steel bearings.
- Available in seven Wolf Tooth anodized colors to match other Wolf Tooth components.
- Designed with the Wolf Tooth triple-sealed system present on all other Wolf Tooth headsets:
- Internal o-ring top cap seal prevents water intrusion around the steerer tube.
- Custom-molded upper cup lip seal provides additional protection for the upper bearing.
- Custom molded dual-lip seal on the crown race to protect lower bearing in the toughest conditions.

Made in the USA