Camille Juban’s ultralight secret weapon, evolved from his PWA/IWT Chile World Cup winning sail. Brand new for 2025, the CATALYST ULTRA was conceived with the goal to make the lightest and strongest high performance 3-batten wavesail possible. Starting with the original S2Maui CATALYST, which set the standard in lightness and strength, the CATALYST ULTRA reduces weight to incredible new levels. At only 85g/square meter and featuring a 100% Dyneema (High Modulus Polyethylene, world’s strongest fiber) woven core, S2Maui’s ULTRA-HMPE™ laminate is the absolute lightest and most tear resistant sail cloth currently available for Windsurf sail construction.

The ULTRA-HMPE™ material is warp oriented and load aligned with S2Maui’s Warp-Path™ panel layout ensuring perfect tension distribution and a stable profile. To ensure long-term durability, we use an X-ply rather than film window. On the water, the performance sensation of the CATALYST ULTRA is mind-blowing. It retains all the agile, responsive handling, stability, power and drive that make the Catalyst a champions sail, but with the incredible, “lighter than light” weight it virtually disappears in your hands, while surfing the wave.

Camille Juban:
“This year I was happy to help with development of the new Catalyst ULTRA model. Working together long term with S2Maui allowed us to give all our experience to develop the new ultralight version of Catalyst. It’s everything that I like about the Catalyst, maneuverability, responsiveness and reactivity + the ultra lightness that everyone would want from a sail.

Artur Szpunar:
Projects like this get me excited: No compromise high-performance design, superlight weight and strength with the latest cutting edge materials. The reward is in the amazing experience that this sail provides on the wave!