Duotone Free 2.0 1300 hydrofoil front wing: 1,300 cm², 970 mm span, aspect ratio 7.20, 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 |
|---|---|---|---|---|---|---|---|
| KT Foiling | Instinct 1300 Instinct 1300 | 1,300 | +0.0% | 7.16 | -0.6% | 965 | C2 Mid-low aspect |
| GONG | Ascent V3 XL | 1,290 | -0.8% | 7.00 | -2.8% | 950 | C2 Mid-low aspect |
| Takoon | X-Glide V2 Front Wing 1250 | 1,250 | -3.8% | 7.20 | +0.0% | 950 | C2 Mid-low aspect |
| Axis | HPS (High Performance Speed) HPS 980 | 1,323 | +1.8% | 7.49 | +4.0% | 980 | C2 Mid-low aspect |
| Sabfoil | Leviathan 950 Leviathan 950 | 1,300 | +0.0% | 6.68 | -7.2% | 950 | C2 Mid-low aspect |
| Axis | PNG (Pump and Glide) PNG 910 | 1,267 | -2.5% | 6.80 | -5.6% | 910 | C2 Mid-low aspect |
| AFS | Evo Front Wing 1250 | 1,250 | -3.8% | 7.60 | +5.6% | 970 | C2 Mid-low aspect |
| RRD | Universal Mantaray Front Wing Y30 1350 | 1,350 | +3.8% | 6.70 | -6.9% | 930 | C2 Mid-low aspect |
| Family | Free |
|---|---|
| Size | 1300 |
| Area, cm² | 1,300 |
| Area basis | unknown |
| Span, mm | 970 |
| Chord, mm | — |
| Aspect ratio | 7.20 |
| 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.