GONG Ypra Slalom V3 Atmo L hydrofoil front wing: 900 cm², 880 mm span, aspect ratio 8.90, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from GONG'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 |
|---|---|---|---|---|---|---|---|
| Unifoil | Progression 140 Progression 140 | 903 | +0.3% | 8.90 | +0.0% | 898 | C3 Mid aspect |
| Duotone | Crest D/LAB 925 | 925 | +2.8% | 8.90 | +0.0% | 900 | C3 Mid aspect |
| AFS | Pure Fuselink Foil (monobloc front wing + fuselage) Pure 900 | 900 | +0.0% | 9.20 | +3.4% | 900 | C3 Mid aspect |
| Slingshot | One-Lock Glide 925 | 925 | +2.8% | 8.80 | -1.1% | 899 | C3 Mid aspect |
| North | Sonar SF930 SF930 | 930 | +3.3% | 8.80 | -1.1% | 900 | C3 Mid aspect |
| RRD | Flying Fish Front Wing Y30 900 | 900 | +0.0% | 9.40 | +5.6% | 910 | C3 Mid aspect |
| ENSIS | FLOW ACE Front Wing 900 | 900 | +0.0% | 9.50 | +6.7% | 925 | C3 Mid aspect |
| KT Foiling | Instinct 920 Instinct 920 | 920 | +2.2% | 8.41 | -5.5% | 880 | C2 Mid-low aspect |
| Unifoil | Evolution 135 Evolution 135 | 871 | -3.2% | 9.40 | +5.6% | 903 | C3 Mid aspect |
| F-One | EAGLE HM Carbon EAGLE 890 | 890 | -1.1% | 9.60 | +7.9% | 925 | C4 High aspect |
| Code Foils | X Series Front Wing 890X | 890 | -1.1% | 8.20 | -7.9% | 852 | C2 Mid-low aspect |
| Family | Ypra |
|---|---|
| Size | L |
| Area, cm² | 900 |
| Area basis | unknown |
| Span, mm | 880 |
| Chord, mm | 143 |
| Aspect ratio | 8.90 |
| Band | C3 Mid aspect |
| Brand files it under | Race / freerace |
| Disciplines | wing, kite, race |
| Construction | Pro Team / 3K Texalium clear carbon prepreg |
| 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 GONG 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.