AFS Silk V2 Front Wing Silk 650 hydrofoil front wing: 650 cm², 765 mm span, aspect ratio 9.00, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from AFS'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 | Surge Surge 780 | 643 | -1.1% | 9.48 | +5.3% | 780 | C3 Mid aspect |
| North | Sonar SF680 SF680 | 680 | +4.6% | 9.20 | +2.2% | 790 | C3 Mid aspect |
| Sabfoil | Blackbird Razor 737 Blackbird Razor 737 | 648 | -0.3% | 8.40 | -6.7% | 737 | C2 Mid-low aspect |
| Duotone | Crest D/LAB 675 | 675 | +3.8% | 9.30 | +3.3% | 790 | C3 Mid aspect |
| Takoon | Flare Front Wing 650 | 650 | +0.0% | 8.30 | -7.8% | 720 | C2 Mid-low aspect |
| Levitaz | Front Wing FS 680 FS 680 | 680 | +4.6% | 8.70 | -3.3% | 770 | C3 Mid aspect |
| Sabfoil | Razor PRO 775 Razor PRO 775 | 631 | -2.9% | 9.64 | +7.1% | 780 | C4 High aspect |
| Slingshot | One-Lock Glide 625 | 625 | -3.8% | 8.40 | -6.7% | 724 | C2 Mid-low aspect |
| GONG | Curve H V3 FG XXS | 620 | -4.6% | 8.40 | -6.7% | 720 | C2 Mid-low aspect |
| Family | SILK |
|---|---|
| Size | Silk 650 |
| Area, cm² | 650 |
| Area basis | unknown |
| Span, mm | 765 |
| Chord, mm | 113 |
| Aspect ratio | 9.00 |
| Band | C3 Mid aspect |
| Brand files it under | Surf / carve |
| Disciplines | prone, wing, sup |
| Construction | HR Carbon / Corecell Core |
| 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 AFS 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.