FSA Orbit I Cf Integrated Bicycle Headset - Lightweight Carbon Fiber Bike Headset for Road & Mountain Bikes | Perfect for Smooth Steering & Enhanced Cycling Performance

1.1/8" , 36x45 acb for 45mm od head tube 1.1/8" steered carbon fibre top cap angular contact bearing (blue seal) stack height 9.6 + 1 = 10.6mm spares: top and bottom bearing: th873 (160-1648) crown race: H6119 (160-5558)

1.1/8", 36x45 ACB

For 45mm OD Head tube

1.1/8" steered