Dia-Compe NB-1 Alloy 1" Headset Black

Lightweight, precision sealed bearing alloy headset for use on 1" threadless system forks.

ITA standard type sizing.

Features

• Aluminum Headset cups 
• Sealed cartridge angular contact bearings
• Star nut and aluminium Top Cap included 
• Size: 1" Italian size only 
• Colour: Silver or Black anodised

Specifications

• Upper stack height: 14mm
• Lower stack height: 11mm
• 1" Italian specification sizing:
• Crown race: 26.4mm
• Headtube ID: 30.2mm
• Fork steerer OD: 25.4mm

Note: Please pay particular attention to the diameters, as 0.2mm is a significant difference.

Installing an incorrect size part will damage frames or forks.

Do not use Star Nut insert on Carbon forks.

Seek assistance from an experienced Bicycle mechanic if in any doubt