Duotone Aero Free SLS 1000: a legacy wing, no longer in Duotone's current range. 1,000 cm², 840 mm span, aspect ratio 6.80. The current wings that match it within ±5% area and ±8% aspect ratio, 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 |
|---|---|---|---|---|---|---|---|
| Axis | HPS (High Performance Speed) HPS 830 | 1,014 | +1.4% | 7.00 | +2.9% | 830 | C2 Mid-low aspect |
| Axis | Spitfire Spitfire 840 | 1,006 | +0.6% | 7.14 | +5.0% | 840 | C2 Mid-low aspect |
| RRD | Universal Mantaray Front Wing Y30 1050 | 1,050 | +5.0% | 6.70 | -1.5% | 840 | C2 Mid-low aspect |
| North | Sonar MA1050v2 MA1050v2 | 1,050 | +5.0% | 6.90 | +1.5% | 850 | C2 Mid-low aspect |
| Lift Foils | 148 Havoc Front Wing 148 | 955 | -4.5% | 7.10 | +4.4% | 826 | C2 Mid-low aspect |
| RRD | Blaze LTE Front Wing Y30 950 | 950 | -5.0% | 6.50 | -4.4% | 790 | C2 Mid-low aspect |
| Sabfoil | Sea Devil 780 Blackbird Sea Devil 780 Blackbird | 950 | -5.0% | 6.40 | -5.9% | 780 | C2 Mid-low aspect |
| Takoon | X-Glide V2 Front Wing 1050 | 1,050 | +5.0% | 7.20 | +5.9% | 870 | C2 Mid-low aspect |
| Family | Aero Free |
|---|---|
| Size | 1000 |
| Area, cm² | 1,000 |
| Area basis | unknown |
| Span, mm | 840 |
| Chord, mm | — |
| Aspect ratio | 6.80 |
| Band | C2 Mid-low aspect |
| Brand files it under | All-round / freeride |
| Disciplines | wing |
| Construction | SLS |
| Model year | 2024 |
| 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.