FSA DX Pro 2 Internal/External Bicycle Headset (Black)

Headset for use in headtube with 1.5 inch lower (49.65mm internal bore) and 1 1/8 inch internal (Zerostack 44mm internal bore) upper. For use with tapered 1.5 to 1 1/8 inch fork steerer.

• Stack Height 16.9+13.4=30.3mm
• Weight: 138.6g