Material: Aluminium Additional Information: – 9 mm aluminium cap – Fork crown diameter: 44 mm Type: standard Type: Ahead Fork Tube Diameter: 1 1/8 ” (28.6 mm / 30 mm) Bearing: Water resistant CroMo bearings Headset Press-Diameter Lower Cup (mm): 44 mm Headset type bottom: Zero Stack (ZS) Headset type top: Zero Stack (ZS) Press-Diameter Upper Cup (mm): 44 mm Scope of Delivery Delivery: 1x BBB BHP-51