Disciplines wake, tow
The Grubb Pro Wake/Tow has 2 sizes in the current range, from 18 to 21 L. Its slenderness, 2.50, is greater than that of 19% 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 3.4× the tolerance.
| Brand | Board | Volume L | Δ volume | Length mm | Δ length | Slenderness | Mount |
|---|---|---|---|---|---|---|---|
| Slingshot | Dwarf Craft V4 130 cm | 22 | +4.8% | 1,300 | -1.6% | 2.41 (-3.8%) | — |
| Slingshot | Dwarf Craft V4 140 cm | 24 | +14.3% | 1,400 | +6.0% | 2.50 (-0.1%) | — |
| Axis | Prone 26 4'1" | 26 | +23.8% | 1,244 | -5.8% | 2.58 (+2.9%) | — |
| Family | Grubb Pro Wake/Tow |
|---|---|
| Model | 4'4 21L Grubb Pro Wake/Tow |
| Size, as the brand prints it | 4'4 21L |
| Volume, L | 21 |
| Length, mm | 1,321 (4'4") |
| Width, mm | 528 |
| Thickness, mm | 46 |
| Weight, kg | — |
| Slenderness (length ÷ width) | 2.50 |
| 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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