Disciplines wake, tow
The Grubb Pro Wake/Tow has 2 sizes in the current range, from 18 to 21 L. Its slenderness, 2.52, is greater than that of 21% 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 2.1× the tolerance.
| Brand | Board | Volume L | Δ volume | Length mm | Δ length | Slenderness | Mount |
|---|---|---|---|---|---|---|---|
| Slingshot | WF-1 V6 3'11" | 17 | -5.6% | 1,194 | -2.1% | 2.47 (-2.1%) | twin-track |
| Slingshot | Hope Craft V3 120 cm | 16 | -11.1% | 1,200 | -1.6% | 2.55 (+1.2%) | twin-track |
| Kalama | E3 Tow 3'10" | 19.0 | +5.6% | 1,168 | -4.2% | 2.42 (-4.2%) | twin-track |
| Family | Grubb Pro Wake/Tow |
|---|---|
| Model | 4'0 18L Grubb Pro Wake/Tow |
| Size, as the brand prints it | 4'0 18L |
| Volume, L | 18 |
| Length, mm | 1,219 (4'0") |
| Width, mm | 483 |
| Thickness, mm | 46 |
| Weight, kg | — |
| Slenderness (length ÷ width) | 2.52 |
| Slenderness band | 2.5–3.0 |
| Mount | — |
| Strap inserts | yes |
| Build | — |
| Construction | — |
| Disciplines | wake, tow |
| Rider weight | — |
| Rider level | — |
| Model year | — |
| Source | manufacturer · read 2026-10-02 |
Every figure above is the manufacturer's published claim, converted to comparable units.
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