FSA Orbit Option S is an semi-integrated Ahead headset which gives the rider the option to adjust their headset angle by 0.5°, 1.0° and 1.5°. The angle variation is made by the lower bearing position within the different cup and an eccentric upper cup. The bearings adjust to different angles and headtube lengths due to the spherical contact surface between bearing and its seat. The Orbit Option S is suited 1 1/8 inch steerers and equipped with 45°/45°angular contact bearings for increased durability and stiffness. Furthermore it is featuring forged aluminium shallow cups. The delivery includes a durable aluminium top cover with laser etched FSA graphics. Fits to headtubes with an inner diameter of 49.57 mm.