Armstrong S1 1850 Alloy Foil Kit – Ultimate Stability and Progression for Modern Foiling

The Armstrong S1 1850 Alloy Foil Kit is engineered to redefine how riders enter and progress in the world of wing foil, foil surfing, wingfoiling, and wind foiling. Built with Armstrong’s renowned precision and durability, this foil kit delivers unmatched stability, ultra-low takeoff speed, and a forgiving ride—making it one of the most accessible and versatile setups for beginners and intermediate riders alike.

Designed as part of the Step 1 (S1) range, the 1850 foil kit focuses on confidence-building performance, helping riders master foil surf, surf foils, and wind foil disciplines with ease.

Why Choose the Armstrong S1 1850 Alloy Foil Kit

Designed to Accelerate Learning

The S1 1850 is specifically crafted to flatten the learning curve. Its intuitive feel and “autopilot-like” stability allow riders to focus on technique rather than constant corrections.

This makes it ideal for:

• First-time wingfoil riders
• Progressing foiling enthusiasts
• Multi-discipline riders (wing, surf, tow, kite)

Exceptional Stability in All Axes

One of the standout features of this foil kit is its superior pitch, roll, and yaw stability. The carefully tuned geometry—including leading and trailing edge sweep and optimized chord length—ensures predictable handling even in challenging conditions.

Ultra-Low Takeoff Speed

The large 1850 cm² front wing generates high lift at low speeds, allowing riders to get up and flying earlier. This is crucial for:

• Light wind wing foiling
• Learning balance and control
• Reducing fatigue during long sessions

Wide Speed Range Performance

Despite its beginner-friendly nature, the S1 1850 offers an impressive speed range. Riders can cruise comfortably at low speeds or push into higher speeds without losing control.

Key Features of the Armstrong S1 1850 Alloy Foil Kit

High-Lift 1850 Front Wing

• Area: 1850 cm²
• Span: 965 mm
• Aspect Ratio: 5.0

This wing is optimized for early lift and smooth glide, making it perfect for foil surfing and wing foil progression.

S1 300 Stabilizer

• Area: 300 cm²
• Wingspan: 410 mm
• Designed for maximum control and balance

The stabilizer complements the front wing to create a balanced and predictable ride.

Modular Alloy System

The Armstrong Alloy System is built for adaptability and long-term progression:

• Compatible with all Armstrong foils
• Easy front wing swaps
• Designed for evolving rider skill levels

Aerospace-Grade Construction

• 6061 and 7075 aluminum alloys
• Titanium and stainless steel hardware
• Corrosion-resistant design for durability

This ensures strength, longevity, and minimal maintenance in saltwater environments.

Advanced Mast Design

• Thickness: 17.5 mm
• Optimized for efficiency and stiffness
• Available sizes: 58 cm, 72 cm, 85 cm

What’s Included in the Kit

The Armstrong S1 1850 Alloy Foil Kit typically includes:

• 1850 S1 Front Wing
• Alloy Mast (various sizes)
• Alloy Fuselage (65 cm or 75 cm)
• S1 300 Stabilizer
• Premium hardware set
• Protective covers and carry bag

Technical Specifications Table

Performance Benefits for Different Foiling Disciplines

Wing Foil

The S1 1850 excels in wingfoil thanks to its early lift and stability, allowing riders to ride in lighter winds and maintain control during transitions.

Foil Surfing

For foil surfing and surf foil, the large surface area helps catch waves easily and maintain glide even in small swell conditions.

Wind Foiling

In wind foiling, the foil’s forgiving nature makes it ideal for learning and cruising, especially in variable wind conditions.

All-Around Foiling

This kit is a true all-rounder, suitable for:

• Beginner progression
• Freeride sessions
• Light wind cruising

Advantages of the Armstrong S1 1850 Alloy Foil Kit

• Extremely stable and predictable ride
• Early lift for easy takeoff
• Wide compatibility with Armstrong ecosystem
• Durable, corrosion-resistant construction
• Modular system for long-term progression
• Safe design with downturned wingtips

Who Is This Foil Kit For?

Beginners

The S1 1850 is one of the best entry-level options for foiling. Its forgiving design minimizes crashes and speeds up learning.

Intermediate Riders

As skills improve, the modular system allows upgrades without replacing the entire kit.

Heavier Riders or Light Wind Conditions

The larger wing size provides sufficient lift for heavier riders or low wind environments, making it ideal for wing foiling sessions in marginal conditions.

Setup and Customization Options

The Armstrong S1 system offers flexibility to tailor your ride:

• Short fuselage (65 cm): More maneuverability
• Long fuselage (75 cm): Increased stability
• Short mast (58 cm): Ideal for shallow water or learning
• Long mast (85 cm): Better for choppy water and advanced riding

This adaptability ensures your wing foil setup evolves with your skill level.

Durability and Build Quality

Armstrong is known for premium craftsmanship, and the S1 1850 Alloy Foil Kit is no exception. The combination of aerospace-grade aluminum and precision machining ensures:

• Long-lasting performance
• Resistance to corrosion
• Tight tolerances for efficient hydrodynamics

Final Thoughts

The Armstrong S1 1850 Alloy Foil Kit is a standout choice in the world of wing foil, foil surf, and wind foil equipment. Its balance of stability, performance, and modularity makes it one of the most versatile foil kits available today.

Whether you’re stepping into wingfoiling for the first time or looking to refine your skills across surf foils and foil surfing, this kit provides the confidence and performance needed to progress quickly and enjoy every session on the water.