Duotone Free 2.0 1900 hydrofoil front wing: 1,900 cm², 1,140 mm span, aspect ratio 6.80, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from Duotone's own published specifications.
Projected and flat area run 3–8% apart. A marked area is one whose brand does not state which it publishes, so a match inside the area tolerance may be comparing unlike figures.
| Brand | Wing | Area cm² | Δ area | Aspect ratio | Δ AR | Span mm | Band |
|---|---|---|---|---|---|---|---|
| Naish | Jet HA Front Wing Jet HA 1840 | 1,840 | -3.2% | 6.80 | +0.0% | 1,120 | C2 Mid-low aspect |
| Family | Free |
|---|---|
| Size | 1900 |
| Area, cm² | 1,900 |
| Area basis | unknown |
| Span, mm | 1,140 |
| Chord, mm | — |
| Aspect ratio | 6.80 |
| Band | C2 Mid-low aspect |
| Brand files it under | All-round / freeride |
| Disciplines | wing |
| Construction | carbon/glass hybrid |
| Model year | 2026 |
| Source | manufacturer |
The brand's published aspect ratio agrees with its own span and area (span² ÷ area) to within 5%, so the figure is confirmed.
See Duotone on the plot →Data current to August 2026. Fast Bobby is the researcher, never the reviewer: every figure above is the manufacturer's published claim, converted to comparable units, and nothing here is a riding impression.