FSA Impact Pro IS42 headset

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The Impact Pro headset features integrated sealed cartridge bearings that fit directly into the head tube of any frame using 42mm 45°/ 45° bearings. Examples: pre-2015 Cinelli Vigo relli, MASH Histogram & MASH Bolt, Breakbrake17 Transfer, pre-2020 Affinity Kissena. ⓘ Integrated bearings fit directly into compatible head tubes without the need of a bearing press. Specifications • 1 1/8" integrated • 45°/ 45° IS42 angular contact bearings (Campy compatible) • alloy top cap/steel star nut assembly • 7075 AL crown race • stack height: 9.4mm • weight: 64g Show more