Ritchey Logic-E Cartridge Press Fit Upper Headset - ZS44/28.6 MFPN=71035078SI Features a compact design with

Features a compact design with fast light shifting and greater chain security

wicking bib straps with perforations for extra breathability

The Box One X2 Fork has the optimal balance of weight strength and stiffness

5 Advertised Weight 3

Ritchey Logic-E Cartridge Press Fit Upper Headset - ZS44/28.6 MFPN=71035078SI Features a compact design withRitchey Logic E headset is designed to work with Shimano STEPS or Di2 routing the cable through the frame without the need to modify fork or frame. S. H. I. S Upper ZS44 S. H. I. S. Stem Clamp Diameter 28. 6 Threadless Color Black Bearing Type Sealed Cartridge Interface Type ZS44 Press Fit