The NECO H373 is a bicycle fork headset with integrated cups, designed for bikes with smooth, tapered steerer tubes measuring 28.6–39.8 mm in diameter and head tubes with internal diameters of 52.2 mm at the bottom and 42 mm at the top. The international headset standard is IS42 for the upper bearing and IS52 for the lower bearing. The package includes all the components needed for assembly. Thanks to the sealed bearings used in this series, the handlebars turn very smoothly.

• Fork steerer tube diameter: 1-1/8” (28.6 mm)
• Head tube internal diameter at the top: 41.8 mm, 45-degree chamfer
• Head tube internal diameter at the bottom: 52 mm, 45-degree chamfer
• Fork diameter at the lower bearing: 39.75 mm
• Upper bearing: NHB6B sealed bearing, height: 7 mm, outside diameter: 41.8 mm, 45/45 degrees
• Lower bearing: NHB15 sealed bearing, height: 8 mm, outside diameter: 52 mm, 45/45 degrees
• Material: CNC-machined 6061 T6 / 7075 T6 aluminum
• Weight: 104 g