RRD Spinner Pro Front Wing Y31 650 hydrofoil front wing: 650 cm², 650 mm span, aspect ratio 6.40, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from RRD'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 | Kite Foil Front Wing Kite Foil 650 | 650 | +0.0% | 6.30 | -1.6% | 640 | C2 Mid-low aspect |
| F-One | ESCAPE HM Carbon ESCAPE 630 | 630 | -3.1% | 6.50 | +1.6% | 640 | C2 Mid-low aspect |
| Axis | Spitfire Spitfire 620 | 628 | -3.4% | 6.12 | -4.4% | 620 | C2 Mid-low aspect |
| Cabrinha | Rebound 650 | 650 | +0.0% | 6.90 | +7.8% | 670 | C2 Mid-low aspect |
| GONG | Ypra Surf-Freestyle V3 Atmo S | 620 | -4.6% | 6.80 | +6.2% | 650 | C2 Mid-low aspect |
| GONG | Ypra Surf-Freestyle V3 Atmo M | 680 | +4.6% | 6.80 | +6.2% | 680 | C2 Mid-low aspect |
| GONG | Ypra Surf-Freestyle V3 S | 620 | -4.6% | 6.81 | +6.4% | 650 | C2 Mid-low aspect |
| Family | SPINNER PRO |
|---|---|
| Size | 650 |
| Area, cm² | 650 |
| Area basis | unknown |
| Span, mm | 650 |
| Chord, mm | — |
| Aspect ratio | 6.40 |
| Band | C2 Mid-low aspect |
| Brand files it under | All-round / freeride |
| Disciplines | wing, prone |
| Construction | Carbon |
| Model year | — |
| 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 RRD 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.