FSA Orbit IS headset

The Orbit IS features Cane Creek compatible IS41 36°/ 45° angular contact bearings, and a low stack height. Compatible with frames having a 1 1/8" head tube/fork steerer and a head tube inner diameter of 41mm (example: Bianchi Super Pista & Pista Concept).   Integrated bearings fit directly into compatible head tubes without the need of a bearing press. Specifications • 1-1/8" integrated • 36°/ 45° angular contact bearings • alloy top cover & top cap/steel starnut assembly • stack height: 10mm • weight: 62g