2025 Slingshot One-Lock Mast

Aluminum, Standard Carbon, or High Modulus Carbon Construction.

ONE-LOCK ALUMINUM MAST:

LIGHT / PREDICTABLE / AFFORDABLE

The Aluminum Mast is perfect for riders seeking an affordable entry into the One-Lock system. It offers excellent control and responsiveness without the higher cost of carbon. The wide range of sizes makes it easier to have multiple mast lengths for different needs.

The One-Lock Aluminum Mast is the lightest aluminum mast on the market. Constructed with 6061 grade aluminum, the design optimizes aluminum placement for maximum weight savings and stiffness. The mast’s chord sits at 118mm, achieving a perfect balance between efficiency, stiffness and weight. This combination delivers direct and precise feedback. At the mast’s foot, our optimized One-Lock collar enhances efficiency and minimizes drag by ensuring smooth water flow from the front wing to the stabilizer, all while holding true to our durability standards. The mast also includes our RTS foil board mounting kit, which dramatically simplifies setup. Once the mast’s position is set, you can fully assemble and disassemble your foil in under 30 seconds, without the need for tools.

The Aluminum Mast is designed to maximize weight savings in an aluminum construction without loss of stiffness. Its low-drag, high-stiffness profile reduces takeoff speed, making it one of the most efficient aluminum masts on the market. The aluminum alloy and screwless assembly eliminates oxidation while also decreasing overall drag.

The One-Lock Aluminum Mast is the lightest aluminum mast on the market, offering a perfect balance of affordability, stiffness, and durability. Designed for optimal performance, it features advanced construction techniques and materials to deliver precise control and responsiveness. This mast is perfect for riders seeking an affordable entry into the One-Lock system.

Speed Range Optimized Profile- Slingshot's Aluminum Mast utilizes the same profile as our Carbon Masts. For the aluminum version, they increased the overall thickness to enhance stiffness without adding weight. Additionally, they eliminated screws from the pedestal and mast foot, optimizing the construction for strength and preventing corrosion and seized screws. This design change also allowed us to place aluminum in the
optimal locations, maximizing the strength and stiffness-to-weight ratio.

Extruded Potted Collar- The Aluminum Mast line features an extruded collar that enhances the feel of the foil by keeping drag low. With no screws holding the collar in place, drag is further minimized. Instead of screws, the collar is potted onto the bottom of the extruded
aluminum mast, providing unparalleled response.

Construction- The Aluminum Mast line is constructed with extruded 6061-grade aluminum, keeping weight low while maintaining high stiffness. This aluminum grade also
offers natural resistance to corrosion.

6061 Aluminum Construction
Optimized Chord Design
Potted Collar Connection
Internal Connection System
Anodized Surface Finish
Durability Standards
Effortless Setup

Length (cm)- 52 (20.5"), 62 (25.4"), 72 (28.3"), 82 (32.3"), 92 (36.2")
Weight (lbs)-1.48, 1.66, 1.85, 2.0, 2.15

ONE-LOCK CARBON MAST

CARBON / LIGHT / MODULAR

The Carbon Mast Line is designed for riders looking to elevate performance and stiffness beyond the One-Lock Aluminum Mast line. The added stiffness provides increased confidence and control, making it easier to progress to more advanced maneuvers. As riders become comfortable with the aluminum mast, upgrading to the carbon mast will enhance glide through a more efficient profile. Available in three lengths, it offers customizable setup options to meet your specific foiling needs.

The One-Lock Carbon Mast is the stiffest standard carbon mast Slingshot ever made. Constructed with Mid-High Modulus Carbon and a hollow core, the design optimizes carbon placement for maximum strength and stiffness. The mast’s chord tapers from 118mm at the foot to 145mmat the base, achieving a perfect balance between efficiency and stiffness. This combination delivers direct and precise feedback. At the mast’s foot, our optimized One-Lock collar enhances efficiency and minimizes drag by ensuring smooth water flow from the front wing to the stabilizer, all while holding true to our durability standards. The mast also includes our RTS foil board mounting kit, which dramatically simplifies setup. Once the mast’s position is set, you can fully assemble and disassemble your foil in under 30 seconds, without the need for tools.

The Carbon mast is designed to optimize performance across a wide range of speeds and conditions. Its low-drag, high-stiffness profile reduces takeoff speed, making it one of the most efficient masts on the market. The increased chord enhances overall stiffness compared to other profiles, ensuring exceptional control and durability for everyday use.

The One-Lock Carbon Mast is our stiffest standard carbon mast to date, delivering precision, performance, and durability. Its low-drag, high-stiffness design enhances efficiency across a wide range of speeds and conditions, making it a game-changer for those transitioning from aluminum masts seeking more weight savings and stiffness.

Mid-High Modulus Carbon Construction
Tapered Chord Design
Optimized One-Lock Collar
Internal Connection System
Hand-Finished Precision
Effortless Setup

Length (cm): 72 (28.3"), 82 (32.3"), 92 (36.2")
Weight (lb) 3.79, 4.23, 4.52

ONE-LOCK HM CARBON MAST

HIGH MODULUS CARBON / STIFF / HIGH END

The High Modulus Carbon Mast is meticulously engineered to optimize performance across a wide range of speeds and conditions. Its low-drag, high-stiffness profile reduces takeoff speed, making it one of the most efficient masts on the market. The increased chord and High Modulus carbon construction enhances stiffness compared to other profiles, ensuring exceptional control and durability for everyday use.

The One-Lock HM Carbon Mast is the stiffest mast we’ve ever made. As a result, it delivers
unmatched control, faster response, and enhanced performance during maneuvers and glides. This mast prioritizes stiffness and precision to connect you with your foil like never before.

The HM Carbon Mast line is designed for those who prioritize stiffness above all else. Just as stiff suspension enhances the responsiveness of a sports car, this mast delivers unparalleled direct feedback on the water, allowing for quicker reactions and greater control. Riders seeking this level of precision will find the One-Lock HM Mast exceeds their expectations by improving their carving, tacking, speed, and glide.

The One-Lock HM Carbon Mast is among the stiffest on the market, offering exceptional rigidity in both longitudinal bending and torsion. Constructed with High Modulus Carbon and a hollow core, the design optimizes carbon placement for maximum strength and stiffness. The mast’s chord tapers from 118mm at the foot to 145mm at the base, achieving a perfect balance between efficiency and stiffness. This combination delivers the most direct and precise feedback in the industry. At the mast’s foot, our optimized One-Lock collar enhances efficiency and minimizes drag by ensuring smooth water flow from the front wing to the stabilizer, all while holding true to our durability standards. The mast also includes our RTS foil board mounting kit, which dramatically simplifies setup. Once the mast’s position is set, you can fully assemble and disassemble your foil in under 30 seconds, without the need for tools.

The High Modulus Carbon Mast line is constructed as a single-piece monobloc using High Modulus carbon pre-preg, molded and cured in one process. The skeletal structure enhances rigidity and control while riding. The carbon fibers are layered at 0° lengthwise to optimize bending stiffness and at 45° to improve torsional stiffness. This specific layup provides the ideal balance between bending and torsional rigidity, ensuring control and comfort in all conditions and at high speeds.

High Modulus Carbon Construction
Tapered Chord Design
Internal Connection System
Hand-Finished Precision
Effortless Setup

Length (cm): 72 (28.3"), 82 (32.3"), (36.2") 92
Weight (lb): 3.79, 4.23, 4.52

ONE-LOCK HM PRO 102 MAST

HIGH MODULUS CARBON / STIFF / HIGH END

Length (cm)- 102 (40.2")
Weight (kg)- 4.12 (9.1lbs)

The One-Lock High Modulus Pro 102 Mast builds on the High Modulus line with improved
performance across a broader speed range. Its low-drag, high-stiffness profile reduces takeoff speed while enhancing top-end speeds. The lowered average mast chord increases yaw responsiveness for quicker maneuvers. A new solid core layup boosts stiffness, offering smoother acceleration, faster riding speeds, and enhanced maneuverability, delivering an elevated kitefoiling experience compared to previous designs.

The One-Lock High Modulus Pro 102 Mast continues with the incredibly high stiffness of our High Modulus mast line. Featuring a new profile with an increase in speed range, this mast provides a smoother acceleration and faster overall riding speed. While at higher speeds seen in kitefoiling, the rider will notice the ability to turn with minimal effort is higher than our High Modulus mast line. This mast prioritizes stiffness, speed, and maneuverability while kitefoiling.

High Modulus Carbon Construction
Solid Core Layup
Tapered Chord Design
Lower Average Chord
Max Acceleration Profile
Internal Connection System
Hand-Finished Precision
Effortless Setup

Mounting Options-

Flush Mount: Use 25mm T30 Torx hardware and T-Nuts
T-Lock Mount: Use (4) T-Locks and T-Nuts.
RTS Mount:* Use RTS hardware and (2) T-Locks.

Multi-Hole Top Plate-

All of Slingshot's One-Lock masts feature a multi-hole top plate with slits that allows riders to slide their bolts onto the mast without aligning T-nuts. This top plate is engineered to fit the RTS kit, enabling setup of the foil in under 15 seconds. Simply slide the front sleds under the anchors mounted on your board, use the preload to pull the mast snuggly down, and tighten the Slingshot T-locks on the back of the top plate. The preload ensures the mast stays securely in place.

Includes:

One-Lock Mast, Protective Cover, RTS kit

How to Choose the Right Hydrofoil Mast

When selecting a hydrofoil mast, three key factors come into play: price, stiffness, and length. Whether you're a beginner or an experienced foiler, understanding these elements will help you find the perfect mast for your riding style.

1. Understanding Mast Construction and Price

Materials and Cost

Before going into the mast options, lets discuss the science behind the different materials:

When designing hydrofoil masts, two key performance factors come into play: bending and torsion.

Bending is how much a mast flexes when force is applied along its length—imagine placing a mast on its side and standing on it.
Torsion is the twisting movement of the mast when force is applied—like pulling on the stabilizer while the foil is set up.

Any stress on a mast results in some level of flex, but the amount and type of flex depend on the materials and construction.

Carbon Masts: Precision Engineered for Performance

Carbon masts allow for advanced tuning of both bending and torsion. This is due to anisotropic construction, meaning their properties change depending on the direction of measurement.

In our carbon masts, 50% of the carbon layers are aligned at 90° (running up the mast) to control bending.
The other 50% are aligned at 45° (running diagonally) to control torsion.

Additionally, High Modulus carbon uses a more ordered internal structure (the carbon chains that make up the carbon fibers), making it stiffer and more responsive—but also more expensive. This is why different levels of carbon masts exist, offering a range of performance and price points.

Aluminum Masts: Uniform & Durable

Unlike carbon, aluminum masts are isotropic, meaning their material properties are uniform in all directions. This makes them strong and reliable, but with less control over flex, especially in torsion.

While aluminum masts provide excellent durability and cost efficiency, carbon masts offer a refined, high-performance feel with enhanced responsiveness and reduced flex.

If that is a bit of an overload, see below:

Aluminum Masts – More affordable and durable, making them a great option for beginners or budget-conscious riders. However, they are heavier, and slightly slower and less stiff than carbon options.
Carbon Masts – Lighter and stiffer, providing better performance and efficiency. However, they come at a higher price, making them more suitable for advanced riders looking for premium performance.
High Modulus Carbon Masts – The stiffest, providing the best performance and efficiency. These are the ultimate masts on the market and give the rider the most instant feedback from their foil when inputting pressure. This mast features the best stiffness to weight ratio of any of our masts.

Price vs. Performance Trade-offs

Entry-level aluminum masts – Lower cost, decent stiffness, but heavier.
Mid-range carbon or hybrid masts – A balanced option between price, weight, and performance.
High-end carbon masts – Ultra-stiff for maximum performance, but at a premium price.

2. Stiffness and Its Impact on Performance

Why Stiffness Matters

Reduces flex for more precise control.
Improves energy transfer, making pumping and high-speed riding more direct and efficient.
Crucial for advanced riders, racers, and those using larger foils.

Factors Affecting Stiffness

Material choice – Carbon is stiffer than aluminum.
Mast thickness and profile shape – Thicker and reinforced profiles add stiffness.
Connection points – High-quality mast-to-fuselage and mast-to-board connections reduce flex and increase responsive.

3. Choosing the Right Mast Length

Short Masts (52-72cm)

Easier to control, making them ideal for beginners.
Great for shallow water riding.
Less leverage, which makes it easier to recover from mistakes.
Put the front wing of the foil more in the energy of the wave.

Medium Masts (82cm)

The best all-around choice for most foiling disciplines.
Provides a balance of stability and maneuverability.
Keeps with the close to the energy of the wave with the ability to ride in rougher conditions

Long Masts (92cm+)

Best for high-performance riding, racing, and big waves.
Allows for more aggressive carving and better handling in choppy water.
Requires more skill as mistakes are harder to recover from due to the higher ride height.
Very important for kite foiling (where wave energy is less of a priority)

Matching the Mast to Your Riding Style

Beginner / Learning → Shorter aluminum mast for control and stability.
Freeride / All-Around → Medium-length mast with a balance of stiffness and affordability.
High Performance / Speed → Long, stiff carbon mast for maximum efficiency and speed.

Final Thoughts

Choosing the right hydrofoil mast depends on your skill level, riding conditions, and performance needs. If you're just starting, an aluminum mast with a shorter length will make learning easier. As you progress, upgrading to a stiffer carbon mast with a longer length can unlock better performance and efficiency

By understanding price, stiffness, and length, you can make an informed decision and get the most out of your hydrofoiling experience!

For high-level riding, I always choose the High Modulus mast as my go-to. Direct feedback is crucial, and the stiffer the mast, the more connected I feel. This added precision keeps me in control, helping me stay on the board and progress faster than I would with any other mast in our range. While the other masts offer great performance, if you want the ultimate control, go with a High Modulus mast.

- Fred Hope

Videos:

Links:

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