North Sonar UHM Carbon Mast 105cm – Ultimate Speed, Stiffness, and Racing Performance

The North Sonar UHM Carbon Mast 105cm is a premium high-performance foil mast engineered for riders pushing the limits of hydrofoil surf wing, wing foiling, foil surfing, and wind foiling. Built with ultra high modulus carbon and an advanced low-drag profile, this mast is specifically optimized for speed, efficiency, and precision control—making it a top choice for competitive and advanced foilers.

Designed for maximum glide and minimal resistance, the 105cm version stands out as a race-oriented mast that delivers unmatched stiffness and hydrodynamic efficiency in powered conditions.

Ultra High Modulus Carbon Construction for Maximum Stiffness

At the core of the Sonar UHM mast is its High Modulus Prepreg Carbon construction, which significantly increases both bending and torsional stiffness while reducing weight and thickness.

This advanced material allows the mast to:

• Transfer power more directly from rider to foil
• Maintain stability at high speeds
• Reduce flex under heavy load

Compared to standard carbon masts, the UHM version is over 15% thinner, resulting in a more efficient profile without sacrificing structural strength.

The result is a mast that feels incredibly responsive underfoot—ideal for high-performance wing foil and foil surfing sessions.

Impossibly Thin Profile for Reduced Drag

One of the defining features of the North Sonar UHM 105cm mast is its ultra-thin hydrodynamic shape. The reduced thickness and shorter chord length minimize drag, allowing riders to reach higher speeds with less effort.

Benefits of the thin profile:

• Faster acceleration onto foil
• Increased top-end speed
• Reduced water resistance
• Improved glide efficiency

The mast’s underwater shape has been refined to ensure smoother water flow, making it easier to maintain speed during long runs or transitions.

This is particularly beneficial for disciplines like:

• Wing foiling in strong wind
• Wind foiling speed runs
• Hydrofoil surf wing downwind riding

Optimized for Racing and High-Speed Riding

The 105cm version is specifically tuned for racing and high-speed disciplines. It features an even thinner submerged section compared to shorter variants, enhancing its ability to cut through water with minimal resistance.

Key racing advantages:

• Maximum top-end speed
• Superior upwind drive
• Reduced drag at high velocity

However, due to its race-focused design, this mast is not intended for jumping, as the ultra-thin structure prioritizes speed over impact resistance.

For riders focused on performance rather than freestyle, this trade-off delivers significant gains in speed and efficiency.

Advanced Hydrodynamics and Ventilation Control

North has engineered the Sonar UHM mast to address one of the most common issues in high-speed foiling—ventilation.

The trailing edge and profile design reduce air ingestion, ensuring consistent performance even in choppy or turbulent conditions.

Hydrodynamic improvements include:

• Reduced ventilation at the trailing edge
• Smoother water flow for stability
• Improved control at speed

This results in a more predictable ride, especially when pushing limits in wind foiling or high-speed wing foiling sessions.

Tailored Chord Distribution for Efficiency and Control

Unlike traditional masts with uniform thickness, the Sonar UHM 105cm features a variable chord design.

• The submerged section is optimized for low drag
• The upper section increases chord length for added stiffness

This intelligent design ensures that riders get the best of both worlds:

• Efficiency below the waterline
• Structural rigidity above it

The result is enhanced control and stability without compromising speed.

Exceptional Glide and Pump Efficiency

Thanks to its refined profile and reduced drag, the UHM 105cm mast significantly improves glide and pumping efficiency.

Performance benefits:

• Longer glide distances between waves
• Reduced rider fatigue
• More efficient energy transfer during pumping

This makes it ideal for advanced riders linking waves or maintaining speed in light wind conditions during hydrofoil surf wing sessions.

Technical Specifications

Specifications based on manufacturer data.

What’s Included

The North Sonar UHM Carbon Mast 105cm comes with:

• UHM Carbon Mast
• Protective mast cover
• Mounting hardware (screws and washers)

Ideal Riders and Conditions

This mast is designed for experienced riders who prioritize speed and efficiency.

Best suited for:

• Advanced to expert riders
• Wing foiling in strong wind
• Wind foiling and racing
• High-speed hydrofoil surf wing riding

Not ideal for:

• Beginners
• Freestyle or jumping disciplines
• Riders seeking maximum durability over performance

Key Features Overview

• Ultra-thin mast profile for reduced drag
• High modulus carbon construction for stiffness
• Optimized for racing and speed
• Advanced hydrodynamics to reduce ventilation
• Enhanced glide and pumping efficiency
• Variable chord design for balance of strength and performance

Why Choose the North Sonar UHM Carbon Mast 105cm?

The North Sonar UHM 105cm mast is a true performance upgrade for serious foilers. Its combination of ultra-thin design, advanced carbon construction, and race-focused engineering makes it one of the fastest and most efficient masts available.

Top reasons to choose it:

• Exceptional speed and glide
• Industry-leading stiffness and control
• Reduced drag for maximum efficiency
• Designed for elite-level performance

For riders committed to progressing in wing foil, foil surfing, and wind foiling, this mast offers the precision and responsiveness needed to unlock new levels of performance.

Final Thoughts

The North Sonar UHM Carbon Mast 105cm is built for riders who demand the absolute best in speed, control, and hydrodynamic efficiency. Its ultra-high modulus carbon construction and refined design make it a standout choice for racing and high-performance foiling.

If your goal is to go faster, ride longer, and push the limits of hydrofoil surf wing and wing foiling, this mast delivers the performance edge you’re looking for.