Industry Nine iRiX Zero Stack Cup Headset Solution

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Customize and upgrade your cockpit with iRiX options Separate upper and lower headset cup assemblies to mix and match Upper assemblies include star nut and top cover, while lower a ssemblies include split crown race Crown race and top cover employ removable and replaceable silicone lip seals to keep the sealed, 440c stainless steel bearings contaminant-free Model IRiX Upper S.H.I.S. ZS44/28.6 Upper/Lower Upper Stack 6mm Color Blue, Orange, Silver Weight 32g Show more