Mount twin-track Build hard Disciplines prone, pump, tow, wake 2024
The Surf Foil Board Lethal FSP Pro 2024 has 6 sizes on record, discontinued sizes included, from 25 to 51 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 2.0× the tolerance.
| Brand | Board | Volume L | Δ volume | Length mm | Δ length | Slenderness | Mount |
|---|---|---|---|---|---|---|---|
| Unifoil | Foil The World 23L | 23 | -8.0% | 1,194 | -2.1% | 2.83 (-0.3%) | — |
| Appletree | Appleslice Prone 4'2'' (22L) | 22 | -12.0% | 1,270 | +4.1% | 2.78 (-2.1%) | twin-track |
| Duotone | Crush SLS 2027 4'2'' | 27 | +8.0% | 1,270 | +4.1% | 2.82 (-0.5%) | twin-track |
| Family | Lethal |
|---|---|
| Model | Surf Foil Board Lethal FSP Pro 2024 |
| Size, as the brand prints it | 4'0 |
| Volume, L | 25 |
| Length, mm | 1,220 (4'0") |
| Width, mm | 430 |
| Thickness, mm | 66 |
| Weight, kg | 3.2 |
| Slenderness (length ÷ width) | 2.84 |
| Slenderness band | 2.5–3.0 |
| Mount | twin-track |
| Strap inserts | yes |
| Build | hard |
| Construction | FSP Pro |
| Disciplines | prone, pump, tow, wake |
| Rider weight | — |
| Rider level | — |
| Model year | 2024 |
| Source | manufacturer · read 2026-10-02 |
Every figure above is the manufacturer's published claim, converted to comparable units.