We are stoked to announce the brand new wingfoil / downwind / speed / parawing masts: the F4 AX Series — available in 75 cm, 85 cm, and 95 cm variants — all built from the same race-winning F4 carbon architecture used in our championship-proven TE models.
Why this new series matters
Over the past seasons, our team has tested the limits of ultra-slim masts under race and downwind conditions. The 75 TE Downwind mast has already earned a reputation for razor-sharp responsiveness, minimal drag, and direct feedback in the hands of our riders and customers. Now, under a new name the AX Series, we’re making that high-performance platform available across three lengths — so riders can choose the perfect fit for their geography, conditions, and discipline, while still benefiting from the same advanced construction philosophy.
What’s new in the AX lineup
Three lengths — same DNA
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75 cm — ultimate low-drag, high agility choice. Ideal for chop, bump runs, and tight reef setups.
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85 cm — the balanced option: extra clearance over chop while preserving nimble feel.
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95 cm — built for big-swell, deep-water races, and absolute drive at speed.
Each mast shares the F4 Team Edition (TE) layup technology and materials used in our race fleet, ensuring the highest possible stiffness-to-weight ratio, a slender cross-section, and consistent flex / torsion control across the range.
Ultra-thin cross-section, drag-optimized geometry
We’ve aggressively slimmed down the chord and thickness profiles to minimize drag in turbulent flow, while maintaining precision and structural integrity even under high load. The expansion from the 75 TE Downwind to the new AX name and the additional 85 and 95 cm versions retains that same “skinny mast” philosophy, extended into more usable lengths for a wider range of conditions.
Connection system & structural integrity
The AX series retains our refined tab-and-flange interface with just three M6 fasteners — a design already proven in the GP TE mast series for robust stiffness and minimal drag. The interface is maniacally performance focused and optimized for water flow, so you get a clean aerodynamic/hydrodynamic footprint through the mast-fuselage junction.
Performance in the hands of athletes
Riders already pushing the 75 TE in race and downwind settings have noted the mast’s precision in turn initiation, immediate feel through chop, and a responsiveness that’s unmatched in conventional carbon masts. Transitioning that level of responsiveness into longer mast options gives athletes definitive control whether they're carving bumps, chasing speed records, or pushing boundaries with a parawing setup.
In community forums, some test users have already remarked:
“Since now the focus is riding bumps, I can see the benefit of going shorter.”
“Super balanced riding … really playful for cranking turns … by feel it’s significantly lighter.”
— early impressions from riders already experimenting with the 75 TE platform (Progression Project Forum)
With the AX series, we’re giving those same virtues — agility, lightness, control — in more usable geometry for a wider rider base.
Who are the AX masts for
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Competitive wingfoil/downwind athletes who demand every marginal gain
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Riders in variable geo-locations (coastal, reef, swell, bump zones) who want a mast that adapts
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Parawingers and speed-seeking pilots who value minimal drag and immediate control
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Foil quiver-builders who want just one mast platform that can stretch across conditions
Launch & availability
We believe the AX Series is a turning point for foil mast design: combining race-proven carbon engineering with wider usability, so riders of all skill levels - whether winging, downwinding, speed-flying or parawinging - can ride at the absolute edge of performance.
