Wolf Tooth Performance EC34/30 Lower Headset Black | Lightweight Aluminium Headset Stainless Steel Bearings Wide Colour Range

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. 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 10mm cup (see tech specs).- Any frame that uses an external cup headset with a 34mm upper head tube. inner diameter and 34mm, 44mm, or 49mm 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 crow