FSA Bicycle Cycle Semi Threadless Headset Orbit Z 1.5R Black 1.5-1.1/8 Inch

For 1.5" sized head tube and 1.1/8" steerer

Stack height: 6.1 + 3 = 9.1 mm

CNC machined alloy cups

For 55 mm OD head tube

Angular Contact Bearing

1.1/8", 3645 ACB

Brand Name : FSA

Lower : 49.7mm

Upper : 49.7mm

Steerer : 1.1/8"