Armstrong MA Mk II (Mid Aspect) MA490 hydrofoil front wing: 490 cm², 632 mm span, aspect ratio 8.00, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from Armstrong'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 |
|---|---|---|---|---|---|---|---|
| North | Sonar MA500v2 MA500v2 | 500 | +2.0% | 7.90 | -1.2% | 630 | C2 Mid-low aspect |
| GONG | Ypra Surf-Freestyle V3 XXS | 480 | -2.0% | 7.50 | -6.2% | 600 | C2 Mid-low aspect |
| GONG | Ypra Surf-Freestyle V3 Atmo XXS | 479 | -2.2% | 7.50 | -6.2% | 600 | C2 Mid-low aspect |
| GONG | Fluid H V3 FG 3XS | 510 | +4.1% | 8.40 | +5.0% | 650 | C2 Mid-low aspect |
| Duotone | Carve 3.0 D/LAB 500 | 500 | +2.0% | 7.40 | -7.5% | 610 | C2 Mid-low aspect |
| Family | MA Mk II |
|---|---|
| Size | MA490 |
| Area, cm² | 490 |
| Area basis | unknown |
| Span, mm | 632 |
| Chord, mm | — |
| Aspect ratio | 8.00 |
| Band | C2 Mid-low aspect |
| Brand files it under | Surf / carve |
| Disciplines | wing, prone |
| Construction | carbon |
| Model year | 2025-2026 |
| 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 Armstrong 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.