First Components Threadless Headset S40F (Black)

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FIRST firstcomponents.com FIRST HEADSET BLAK - IS42/IS52 A premium threadless/Ahead integrated headset to fit modern bikes with a 41.8/51.8mm OD bearing seat and tapered 1-1/2" - 1 -1/8" steerer Alloy cap/topcap w/ ACB sealed cartridge bearings (Upper = 45°x45° / Lower = 36°x45°) IS42/28.6 – IS52/40 Black Show more