Wolf Tooth Premium IS Headset - Integrated Standard

Headset Fitment Guide:

Premium Headset Components

Wolf Tooth headsets are machined here in our Minnesota shop with aircraft-grade 6061 aluminum. They are designed to be lightweight, strong, and durable. These headsets have three levels of industry-leading custom sealing to protect bearings from the elements and prolong the life of the headset. These IS headsets are for frames with molded-in internal bearing cups.

Compatibility

• Any frame that uses IS (Integrated Standard) headsets with 41 mm upper and 52 mm lower outer bearing diameter
• Uppers and lowers sold separately
• Enduro stainless steel sealed bearings included on both the upper and lower
• IS42 is not compatible with Specialized bikes or bikes using the Campagnolo Hiddenset standard
• Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately). (Never use a star nut on a carbon steerer tube)

Upper assembly features:

• Ultralight Stem Cap with Integrated Spacer plus an aluminum bolt and a star nut
• 7, 15, and 25 mm stack height top cover options (7 mm cover = 8 mm total stack, 15 mm cover = 15 mm total stack, 25 mm cover = 25 mm total stack
• O-ring seal prevents water intrusion around steerer tube
• Custom-molded upper lip seal provides additional protection for upper bearing
• bearing top cap outer diameter 45.8 mm

Lower assembly features:

• IS lower headset consists of a bearing and crown race only. The crown race is black anodized and not visible when installed
• Custom over-molded dual-lip seal on the crown race to protect lower bearing in the toughest conditions
• Headset components precision machined in-house at Wolf Tooth from aircraft grade aluminum to ensure the highest level of quality

Specifications:

• Weight: 7 mm • 52 g | 15 mm • 59 g | 25 mm • 66 g
• Material: 6061 aluminum
• Stem Cap Bolt Torque Spec: 2-3 Nm with light grease on threads only