HY638 1-1/8″ to 1-1/2″ Tapered Integrated Headset Set for 42 to 52.2mm Tapere…
Full integrated headset for 1-1/8″ upper and 1.5″ lower steerer; compatible with tapered head tubes. – Stack Height: 8.7+1.1=9.8mm ± 1mm. Complete kit includes 7.8mm tapered top cone, crown race, sealed bearings, top cap, starnut, and bolt.