For who
- Intermediate to advanced foilers seeking maximum stiffness
- Riders focused on downwind, prone, wing foiling or waves
- Users who want to minimize mast drag while maintaining high stability
- Those who need ultra-direct energy transfer and a very precise feel
When to choose
- When you want an extremely stiff mast with an ultra-slim 14 mm profile
- When you want to increase top speed, glide efficiency and carving precision
- Choose 78 cm for prone and downwind
- Choose 84 cm for all-round freeride, freestyle and wave riding
- When you prefer a unified T40 hardware system across the entire Union platform
Behaviour
The Apex stands out with extreme longitudinal and torsional stiffness, maintaining stable, predictable behaviour even at high speeds and under heavy load. The ultra-slim 14 mm profile significantly reduces drag, helping with early lift and improving long-glide efficiency.
Its shape resists ventilation and keeps the foil controlled during aggressive carving. The tapered upper section maximizes stiffness where forces are highest, while the submerged part of the mast remains thin and hydrodynamic to maintain low drag.
Construction & technologies
The mast is built from ultra high modulus carbon in a single-piece monocoque construction, eliminating flex points and improving energy transfer. This material choice allows the mast to retain full stiffness even with a reduced 14 mm profile.
An integrated stainless steel 316 insert ensures a rigid and precisely aligned connection to the Union interface. Unified T40 hardware simplifies assembly and keeps the entire foil platform consistent.
The slim aerodynamic geometry improves top-end speed, stability under load, and overall hydrodynamic efficiency in a wide range of riding conditions.
Features

- Union connection - Refined interface reduces cross-section by 15% and increases hydrodynamic efficiency
- Ventilation resistant design - Mast shape helps prevent ventilation and maintains control in dynamic manoeuvres
- Tapered upper section - Reinforced upper structure maximizes stiffness while keeping the submerged section thin for minimal drag
- Carbon construction - Single-piece build eliminates flex points and ensures direct energy transfer
- Ultra high modulus carbon - Premium ultra-rigid carbon delivers extreme stiffness with low weight
- 14 mm aerodynamic profile - Exceptionally thin profile reduces drag and improves glide and early lift
- Integrated SS316 insert - Precision-aligned insert ensures a stiff, durable connection with the Union interface
- T40 hardware - Unified T40 screw standard simplifies assembly across the entire foil system
- 3-screw connection - Simple three-bolt interface reduces setup time and improves hydrodynamic flow
Set includes
- Union Apex Carbon Mast
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