WOLF TOOTH Superior ZS44/28.6 6 mm Semi-Integrated Headset

Wolf Tooth Headsets Are Machined Here In Our Minnesota Shop With Aircraft-Grade 6061 Aluminum. They Are Designed To Be Lightweight, Strong, And Durable. Performance Headsets With Enduro Black Oxide Bearings Have A One-Year Warranty. 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 Zs Headsets Are For Frames With Internal Bearing Cups That Are Pressed Into The Frame. Features: Upper Assembly Features: - Ultralight Stem Cap With Integrated Spacer Plus An Aluminum Bolt And A Star Nut. - 6mm Top Cover = 6mm Total Stack. - O-Ring Seal Prevents Water Intrusion Around 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 Protects Lower Bearing In The Toughest Conditions. - All Components Precision Machined In-House At Wolf Tooth From Aircraft Grade Aluminum To Ensure The Highest Level Of Quality. - Service And Additional Parts Available. Compatibility: - Any Frame That Uses Zs (Zero Stack) Headsets With 44mm Upper And 56mm Lower Head Tube Inner Diameter. - Uppers And Lowers Sold Separately. - Enduro Black Oxide 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).