Ritchey Comp Cartridge Logic-E Integrated Upper IS Headset - IS42/28.6

Bringing Ritchey's heritage of legendary cycling products into the world of e-bikes and electronic shifting, Tom Ritchey designed a unique headset that allows the cables to be run internally from the stem into standard frames without requiring the frame or fork to be modified. The Logic-E headset is designed to allow Shimano Di2 and STEPS cables to be concealed from view and the wind while protecting them from damage and is available for integrated IS and semi-integrated ZS standards. Steerer size: 1-1/8" upper. Integrated (IS) or semi-integrated (S). Top cap included.