FSA

NO.55R Headset, 1.5", Model 558

The FSA NO.55R Headset, 1.5", Model 558 delivers the sleek integration and precise steering performance that today’s high-end frames demand. Designed for fully internal cable routing, it helps riders achieve a clean, aerodynamic cockpit without sacrificing durability or handling feel.

Built for both road and mountain setups, the NO.55R brings together FSA’s precision engineering and modern aesthetics to keep steering smooth and responsive, mile after mile. Whether it’s a lightweight road racer or a capable trail machine, this headset ensures every turn feels crisp and controlled.

Key Features:

• Integrated cable routing for a streamlined, clutter-free front end.
• 1.5" bearing system delivers stable, precise steering under load.
• Wide frame compatibility supports both road and MTB builds using internal cable systems.
• Durable construction built to handle real-world riding conditions.
• Clean aesthetic that enhances modern frame designs.

For riders building a next-generation bike or refining a premium setup, the FSA NO.55R headset is the finishing touch that combines performance, reliability, and contemporary style.