Ritchey Logic Threadless Headset

The Ritchey External Cup EC Threadless headset features a smaller upper bearing to save weight, while the oversized lower bearing is designed to handle loads. Deep bearing cups ensure a solid fit.Material: steel/plasticNo threadsHeadset height: 28.9mmTop stack height: 15.7mmBottom stack height: 13.2mmHead tube diameter: 34mmUpper S.H.I.S.: EC34/28.... more6 (1 ⅛")Lower S.H.I.S.: EC34/30 (1 ⅛")Bearings: ball bearingWeight: 156gColor: blackNot compatible with Ritchey WCS Carbon forks with integrated 45° crown.