Wolf Tooth headsets are machined here in our Minnesota shop with aircraft-grade 6061 aluminum. They are designed to be lightweight, strong, and durable. Our 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. These IS headsets are for frames with molded-in internal bearing cups. Premium Headsets with Enduro stainless steel bearings.
Compatibility:
– Any frame that uses IS (Integrated Standard) headsets with 41mm upper and 52mm 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 25mm stack height top cover options (7mm cover = 8mm total stack, 15mm cover = 15mm total stack, 25mm cover = 25mm 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
– The Wolf Tooth crown race installation adapter will help avoid damaging the crown race seals.
Specifications:
– Weight: 7mm-52g
– Material: 6061 aluminum
– Stem Cap Bolt Torque Spec: 2-3 Nm with light grease on threads only






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