Mount twin-track Build hard Disciplines wing 2025
The Wing Foil Board Lethal FSP Pro 2025 has 6 sizes on record, discontinued sizes included, from 50 to 100 L. Its slenderness, 2.84, is greater than that of 44% of the 1,895 current boards that publish a length and a width.
No current board from another brand is within ±7% of volume and ±2% of length, and ±2% of slenderness where both publish a width of this one.
None of these is within the tolerances above: each misses on volume, length or slenderness by up to 1.4× the tolerance.
| Brand | Board | Volume L | Δ volume | Length mm | Δ length | Slenderness | Mount |
|---|---|---|---|---|---|---|---|
| Appletree | Apple Skipper Wing 4'9'' (50L) | 50 | +0.0% | 1,448 | +1.8% | 2.78 (-2.3%) | twin-track |
| ENSIS | ROCK'N'ROLL ACE 54 | 54 | +8.0% | 1,450 | +2.0% | 2.79 (-2.0%) | twin-track |
| Starboard | Take Off 4'8" x 19" 50L | 50 | +0.0% | 1,420 | -0.1% | 2.92 (+2.7%) | twin-track |
| Family | Lethal |
|---|---|
| Model | Wing Foil Board Lethal FSP Pro 2025 |
| Size, as the brand prints it | 4'8 |
| Volume, L | 50 |
| Length, mm | 1,422 (4'8") |
| Width, mm | 500 |
| Thickness, mm | 111 |
| Weight, kg | 4.1 |
| Slenderness (length ÷ width) | 2.84 |
| Slenderness band | 2.5–3.0 |
| Mount | twin-track |
| Strap inserts | yes |
| Build | hard |
| Construction | FSP Pro |
| Disciplines | wing |
| Rider weight | — |
| Rider level | — |
| Model year | 2025 |
| Source | manufacturer · read 2026-10-02 |
Every figure above is the manufacturer's published claim, converted to comparable units.