Cane Creek 40 Series HeadsetsReplaces Cane Creek IS-3 headset41mm angular contact bearings feature 36degree inner chamfer, 45degree outer (36/45)Directly compatible with 41mm head-tube and fits 42mm (Italian) head-tube with supplied 0.25mm shimIntegrated (IS) assemblies feature chamfers molded inside the head-tube with no press-in cups15mm stack height (tall) top coverReplaces Cane Creek ZS-3 headsetBlack oxide, sealed cartridge bearingsZS44/28.6|ZS44/30 fits 1-1/8" straight steerer tubes to straight 44mm (1-1/8") head tubesInternally relieved AL-6061 T-6 cups and coversZero Stack (ZS) assemblies feature press-in cups with bearings inside the frame8mm stack height (short) top coverItem SpecificationsColorBlackSteerer Tube1-1/8" ThreadlessCrown Race30.0Bearing TypeSealedHeadset TypeIntegrated, 41.0mm OD, 45 degree bearing (IS)Defined ColorBlackS.H.I.S UpperIS41S.H.I.S LowerIS41S.H.I.S. Clamp Diameter28.6