ZS55 Headsets Stock Item:Null Ritchey WCS Headset Cartridge Bearing 52mm / 40mm / 8mm 45 Degrees x 45 Degrees for Ritchey IS52, ZS55, ZS56 Carbon fiber plate and cage

Carbon fiber plate and cage gives you the perfect balance of lightweight and durability - with over 6 lbs of tenacious grip

roots or small obstacles on unpaved paths

Not compatible with Shimano® Di2® E-Tube® EW-SD50 wires (nominally 5 mm OD connector) — use the Park Tool EWS-1

The green series Sinter 2032 race bicycle brake pads are designed with one thing in mind – extreme braking performance in diverse temperature conditions

ZS55 Headsets Stock Item:Null Ritchey WCS Headset Cartridge Bearing 52mm / 40mm / 8mm 45 Degrees x 45 Degrees for Ritchey IS52, ZS55, ZS56 Carbon fiber plate and cageZS55 (ZERO STACK) HEADSETS ZS55 assemblies and replacement bearings are listed below. Canecreek Bearings 36 x 45 Ritchey Bearings 45 x 45 For further assistance please see the Canecreek Headset Fit Finder Catalogue Entry