Ritchey Comp Cartridge Headset

The Ritchey Comp Cartridge Switch headset is designed specifically to work with the Ritchey Switch stem to guide cables, wires, and hydraulic lines from the handlebars to the bicycle frame. The cables are routed from the handlebars to the conduit of the headset, which is located at the bottom of the Switch stem, and then pass through an opening at the front of the Switch headset spacers before travelling through two channels at the top of the headset and reaching the frame. This system allows the headset bearings to operate without any interference from cables, wires, or lines passing through the head tube.Features:Material: Nylon + fibre glassStack height: 21.7mm (IS) or 23.7mm (ZS)Head tube ID: 52mm (IS) or 55/56 (ZS)Head tube OD: 56mm (IS) or 61/62 (ZS)S.H.I.S.: IS52/28.6 (1.5") - ZS55/28.6 (1.5") - ZS56/28.6 (1.5")Bearings: 51.80/40mm 45°/45° - sealed cartridge (ACB)Weight: 54g