Cane Creek 110 ZS44/28.6 ZS56/40 Headset - Black | Premium Bicycle Headset for Mountain & Road Bikes | Smooth Steering & Durable Performance for Cycling Enthusiasts

Backed by a 110-year warranty and constructed in Fletcher, NC, the 110-Series headset is designed with no compromises in quality, durability, or finish quality. Zero stack uppers press into head tube with very little stack height. Lowers are either zero stack or external cup.Aluminum dual seal crown race protects lower bearingSealed stainless steel bearingsInterlok spacer compatibleCarbon-friendy compression ring captured in top cover, keeping shims in place110 year warrranty7075 T-6 aluminum cups machined in Fletcher, NCCompatible with tapered 1-1/8 to 1-1/2 steerer tubes, or straight 1-1/8 steerers with a conversion crown race (sold separately)Item SpecificationsColorBlackCrown Race40Bearing TypeCartridgeDefined ColorBlackS.H.I.S UpperZS44S.H.I.S LowerZS56S.H.I.S. Stem Clamp Diameter28.6 ThreadlessLower Stack Height4Upper Stack Height8