MagCAD Specialized Aethos Headset Update Kit - SL7
What's Included
- 1x 5mm headset cap (Aethos top bearing cover).
- 1x 5mm headset spacer.
- 2x 10mm headset spacers.
- 1x 4mm "top" spacer (Tarmac SL7 stem adapter)
The Tarmac SL7 stem and stem cover are pictured for reference only and not included.
Overview
This MagCAD headset kit has been a popular request for those wishing to mount the Tarmac SL7 stem to their 1st generation Specialized Aethos (2020-2025) road bike.
This remodelled headset bearing cover and spacers link the integrated design of the Tarmac SL7 to the more rounded shape of the 1st generation Specialized Aethos (2020-2025) road bike, improving aesthetics and allowing the use of an integrated computer mount out front for a super clean cockpit.
The 1st generation Aethos (2020-2025) has external cables, as standard. Therefore this headset kit does not have any provision for internal cable routing. This headset kit is not compatible with the 2nd generation Specialized Aethos (2026-).
Application
All MagCAD headset parts are 3D printed in a durable Nylon to ensure they are robust to many years of use. As with any steering related components they should be installed by a competent mechanic and inspected regularly. Incorrect assembly or mis-use may result in damage to the headset components.
The complete headset kit has a total stack height of 34mm, including the "top" Tarmac SL7 spacer. This remains within the maximum recommended headset stack height by Specialized and covers most riders needs.
The minimum stack height, for a "slammed" setup, is 9mm from top of the split compression ring to underside of the Tarmac SL7. See our CAD drawing for more information.
The gap between bearing cover and frame has been carefully refined to minimise water ingress whilst covering variations in split ring dimensions supplied by Specialized. Extra care should be taken to ensure the top bearing cover does not contact the frame once fitted and under compression. 1-1/8 headset shims (not supplied) can be used to increase the gap, if required.
Additional spacers can be purchased separately following the links below:
- MagCAD Specialized Aethos Headset Update Spacer - SL7 - 10mm.
- MagCAD Specialized Aethos Headset Update Spacer - SL7 - 5mm.
Compatible With:
- Specialized Tarmac SL7/SL8 alloy stem.
- Specialized Aethos (2020-2025) road bike.
- Not compatible with the Specialized Aethos 2 (2026) road bike.
Specifications
- Weight: 32 grams.
Disclaimer
This product and/or service is not affiliated with, endorsed by or in any way associated with Specialized Bicycle Components Inc. or its products and services. Specialized and their respective logos are trademarks or registered trademarks of Specialized Bicycle Components Inc.