Wolf Tooth Premium EC Headset - External Cup

Headset Fitment Guide:

Premium Headset Components

Wolf Tooth headsets are machined in the USA with aircraft-grade 6061 aluminum. These 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. Available in a variety of colors. These EC headsets are for frames with external bearing cups, which places the bearing outside of the frame with these headsets.

Compatibility

• Stack height designation for EC headsets includes 10 mm cup (see tech specs)
• Any frame that uses an external cup headset with a 34 mm upper head tube. inner diameter and 34 mm, 44 mm, or 49 mm lower head tube inner diameter
• Uppers and lowers sold separately
• Enduro stainless steel sealed bearings included on both the upper and lower
• 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)
• A crown race adapter (sold separately)will allow you to use forks with smaller 1-1/8" or 1-1/4" steerer tubes with a larger 1-1/2" bottom headset cup

Upper assembly features:

• Ultralight Stem Cap With Integrated Spacer plus an aluminum bolt and a star nut
• 5 mm cover = 16 mm total stack, 15 mm cover = 25 mm total stack, 25 mm cover = 35 mm total stack
• O-ring seal prevents water intrusion around the steerer tube
• Custom-molded upper lip seal provides additional protection for upper bearing

Lower assembly features:

• Custom molded dual-lip seal on the crown race to protect lower bearing in the toughest conditions
• 12.25 mm stack

Specifications

• Weight: EC44 lower • 45 g | EC49 lower • 54 g | EC34 lower • 37 g | EC34 5 mm upper • 64 g | EC34 15 mm Upper • 70 g | EC34 25 mm upper • 79 g
• Material: 6061 aluminum
• Stem Cap Bolt Torque Spec: 2-3 Nm with light grease on threads only