Drop In Logic-E 1-1/8" upper headset
Intended use: road Di2 integration
Compatible with frame head tubes 1-1/8" (IS42/28.6)
Streem II WCS Carbon and WCS alloy and Comp bars drilled for Di2 junction box also compatible with Logic-E
LOGIC-E CONCEPT: The Logic-E Integration Kit was designed to allow Shimano Di2 and STEPS cables to be concealed from view and from the wind while protecting them from damage. Tom Ritchey designed a unique system that allows the cables to be run internally from the stem into standard frames without requiring the frame or fork to be modified. A flexible, adhesive, cable guide included with Logic-E headset, allows routing of Shimano cable under stem to top cap. The Di2 Integration Kit is compatible with any Ritchey stem. Thus, a wide variety of handlebars can be used.
Sealed cartridge bearing
Corrosion-resistant Ti-coated bearing
Steerer Size: 1-1/8"
Top Cover OD: 46mm
Bearing OD: 41.8mm (45°/45°)
Verified weight (without expander)