Fsa Components Top Cover - Suits Acr Internal Routing - For 45X45 51.8OD/42ID Bearing & Acr Compression Ring - 10MM

Top covers to fit FSA Headsets.

Note: 1.5 Reducer Upper Assembly is intended to be paired with #57 Orbit Z 56mm Lower Assembly to make a complete upper assembly for bikes with 56mm headtubes (e.g., Commencal)