X-15 Class U19

The X-15 Class U19 is a complete Starboard hydrofoil. The foil is the most-determining component of performance: it defines the flight profile, usable speed range, pumping ease, and overall feel on the water. A good foil + board combo always beats a premium board with a mediocre foil.

What matters when choosing a foil:

• Front wing aspect ratio:
  • Low Aspect (LA): smooth lift, easy to get flying, ideal for progression. E.g., AK Trek.
  • Medium Aspect (MA): versatile, balance of speed and maneuverability. E.g., AK Tracer.
  • High Aspect (HA): long glide, race, downwind, advanced riders. E.g., AK Plasma.
• Front wing size (cm²): larger gives more lift and easier launching; smaller gives more speed and maneuverability.
• Material: aluminum (affordable, heavy), carbon (premium, light, rigid).
• Mast length: 71–75 cm standard; 85–90 cm for race/downwind.

How we recommend it at El Niño Mallorca. For your first foil, prioritize large size and low aspect ratio (easier to get flying). Once you're pumping and flying comfortably, step up in aspect ratio or down in size. Component compatibility (mast + fuselage + wings) varies by brand and generation—always confirm before buying. Unsure about the model based on your weight, level, and primary discipline? Write us.