Duotone Whizz SLS 1000 hydrofoil front wing: 1,000 cm², 920 mm span, aspect ratio 8.50, 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 | Siren MA Front Wing Siren 1000 | 1,000 | +0.0% | 8.54 | +0.5% | 922 | C3 Mid aspect |
| GONG | Fluid H V3 FG L | 1,010 | +1.0% | 8.40 | -1.2% | 920 | C2 Mid-low aspect |
| Sabfoil | Blackbird 905 Balz Muller Signature Blackbird 905 | 998 | -0.2% | 8.30 | -2.4% | 905 | C2 Mid-low aspect |
| Sabfoil | 909 Balz Muller Limited 909 Balz Müller Limited | 1,000 | +0.0% | 8.26 | -2.8% | 909 | C2 Mid-low aspect |
| GONG | Fluid V3 Atmo L | 1,010 | +1.0% | 8.70 | +2.4% | 940 | C3 Mid aspect |
| Cabrinha | Whippit 1000 | 1,000 | +0.0% | 8.10 | -4.7% | 900 | C2 Mid-low aspect |
| Code Foils | X Series Front Wing 985X | 985 | -1.5% | 8.20 | -3.5% | 896 | C2 Mid-low aspect |
| Takoon | Flare Front Wing 1050 | 1,050 | +5.0% | 8.60 | +1.2% | 950 | C3 Mid aspect |
| Unifoil | Aggression 150 Aggression 150 | 967 | -3.3% | 8.20 | -3.5% | 890 | C2 Mid-low aspect |
| Armstrong | MA Mk II (Mid Aspect) MA990 | 990 | -1.0% | 8.00 | -5.9% | 906 | C2 Mid-low aspect |
| Takoon | Flare Front Wing 950 | 950 | -5.0% | 8.30 | -2.4% | 890 | C2 Mid-low aspect |
| AFS | Evo Front Wing 950 | 950 | -5.0% | 8.10 | -4.7% | 880 | C2 Mid-low aspect |
| AFS | Silk V2 Front Wing Silk 950 | 950 | -5.0% | 9.00 | +5.9% | 925 | C3 Mid aspect |
| AFS | Silk V2 Front Wing Silk 1050 | 1,050 | +5.0% | 9.00 | +5.9% | 972 | C3 Mid aspect |
| F-One | SK8 HM Carbon (T2) SK8 HM CARBON 950 | 950 | -5.0% | 8.00 | -5.9% | 870 | C2 Mid-low aspect |
| F-One | SK8 HM Carbon (T2) SK8 HM CARBON 1050 | 1,050 | +5.0% | 8.00 | -5.9% | 915 | C2 Mid-low aspect |
| KT Foiling | Halo 950 Halo 950 | 950 | -5.0% | 8.00 | -5.9% | 870 | C2 Mid-low aspect |
| Takuma | Kujira II Front Wing Kujira II 950 | 950 | -5.0% | 8.00 | -5.9% | 870 | C2 Mid-low aspect |
| Sroka | S-Foil 950 S HA 950 S HA | 950 | -5.0% | 7.90 | -7.1% | 850 | C2 Mid-low aspect |
| Family | Whizz |
|---|---|
| Size | 1000 |
| Area, cm² | 1,000 |
| Area basis | unknown |
| Span, mm | 920 |
| Chord, mm | — |
| Aspect ratio | 8.50 |
| Band | C2 Mid-low aspect |
| Brand files it under | Surf / carve |
| Disciplines | prone, wake |
| 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.