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Logic-E 1.5" Integrated IS Upper Headset



The new Ritchey Logic-E 1.5" Integrated IS Upper Headset is a solution designed to allow cables and wires to easily integrate with internal frame routing when using any standard stem – no special stem necessary. Cables and wires enter the headtube through channels on the headset upper, passing through the space between the fork steerer and headtube before continuing their route through the frame.

Tech Specs

Material Nylon + glass fiber
Stack Height20.2mm
Headtube ID52mm
Headtube OD56mm
S.H.I.S.IS52/28.6 (1.5”) 
Bearings51.80/40mm 45°/45° - sealed cartridge (ACB)
Compression cap NOT included
Logic-e 1.5” integrated IS headset requires a bearing insertion depth of 8.7mm for the closest fit, please check with your frame manufacturer for compatibility.

Tech Drawing

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