
Specialized Aethos Lightweight Complete Integrated Replacement Headset
Specialized Aethos Lightweight Complete Integrated Replacement Headset
Stage 21 Bikes
23582 Moulton Parkway
#111
Laguna Woods CA 92637
United States
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Factory Replacement lightweight complete integrated headset with customs size lower bearing used on Aethos model bikes.
• Upper Bearing: 41.8mm OD x 30.5mm ID x 8mm Thick (45x45 degree)
• Lower Bearing: 49.5mm OD x 40.5mm ID x 6.5mm Thick (45x45 degree)
• 45mm OD / 9.5mm tall carbon top transition cover.
• Split plastic compression ring, 7mm tall.
• 10mm carbon headset spacer (3 pcs.)
• 5mm carbon headset spacer (2 pcs.)
Where used OEM:
2021 - 2025 Aethos & S-Works Aethos Bikes and frame Sets


