FSA Orbit IS-2 (1-1/8")

Smooth Rotation. Integrated Strength.

The FSA IS-2 is an internal-style headset (Integrated Standard) featuring high-quality Angular Contact Bearings (ACB). By placing the bearings directly into the headtube, the IS-2 reduces stack height and creates a cleaner, more aerodynamic front end. Crafted from premium alloy and steel, this headset is engineered to provide a "fit and forget" experience, ensuring your steering stays crisp and play-free season after season.

Why the IS-2 is the Standard for Reliability:

• 36°/45° Angular Contact Bearings: These specialized bearings are designed to handle both radial and axial loads simultaneously. This results in a much smoother steering feel under the heavy "side-loading" forces experienced during descending and sprinting.

• Low Profile Alloy Top Cover: The CNC-machined alloy top cap keeps your cockpit looking professional and minimalist, providing a sleek transition from your headtube to your FSA Omega Stem.

• Excellent Sealing: Features integrated seals that act as a barrier against moisture, road salt, and trail dust, significantly extending the life of the bearings even in harsh riding conditions.

• Universal 1-1/8" Compatibility: Designed for standard non-tapered steerers, making it the perfect replacement or upgrade for a massive range of road, gravel, and older mountain bike frames.

• Lightweight Engineering: By removing the need for press-fit cups, the IS-2 shaves grams off your front end, contributing to a more responsive and agile handling characteristic.

• Easy Maintenance: The drop-in bearing design makes service and replacement incredibly simple, requiring no specialized "press" tools for most integrated frames.

Technical Specifications:

• Type: Integrated (IS)

• Steerer Diameter: 1-1/8" Straight

• Bearing Angle: 36°/ 45° ACB (Angular Contact)

• Material: Alloy Top Cover / Steel Bearings

• Stack Height: ~10mm (depending on top cover choice)

• Compatibility: 45mm OD Headtubes (Standard IS41)

The Alegro Perspective: When we’re refreshing a customer’s bike that has developed a "notchy" or stiff feeling in the steering, the IS-2 is our primary solution. It’s affordable, the bearings are top-notch, and it restores that "new bike" handling precision instantly.

Precision Steering. Seamless Integration. Trust your Front End to FSA.