Duotone Amp SLS 1750 hydrofoil front wing: 1,750 cm², 1,433 mm span, aspect ratio 11.70, 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 |
|---|---|---|---|---|---|---|---|
| GONG | Hyper Trail V3 Atmo 3XL | 1,750 | +0.0% | 11.40 | -2.6% | 1,410 | C4 High aspect |
| Axis | PNG V2 PNG V2 1400 | 1,786 | +2.1% | 10.99 | -6.1% | 1,400 | C4 High aspect |
| GONG | Sirus V3 XL | 1,700 | -2.9% | 10.90 | -6.8% | 1,360 | C4 High aspect |
| GONG | Sirus V3 Atmo XL | 1,691 | -3.4% | 10.90 | -6.8% | 1,360 | C4 High aspect |
| Family | Amp |
|---|---|
| Size | 1750 |
| Area, cm² | 1,750 |
| Area basis | unknown |
| Span, mm | 1,433 |
| Chord, mm | — |
| Aspect ratio | 11.70 |
| Band | C5 Very high aspect |
| Brand files it under | Pump / dock |
| Disciplines | pump |
| Construction | SLS |
| Model year | 2025 |
| 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.