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

Rim Width (Inside): 21mm

RIDE offers the Race Face performance and artisanship the brand is known for at an attractive price point

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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