Slingshot PTM 899 899: a legacy wing, no longer in Slingshot's current range. 925 cm², 899 mm span, aspect ratio 8.74. The current wings that match it within ±5% area and ±8% aspect ratio, from Slingshot'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 SF930 SF930 | 930 | +0.5% | 8.80 | +0.7% | 900 | C3 Mid aspect |
| Duotone | Crest D/LAB 925 | 925 | +0.0% | 8.90 | +1.8% | 900 | C3 Mid aspect |
| GONG | Fluid V3 Atmo M | 910 | -1.6% | 8.70 | -0.5% | 890 | C3 Mid aspect |
| Unifoil | Progression 140 Progression 140 | 903 | -2.4% | 8.90 | +1.8% | 898 | C3 Mid aspect |
| KT Foiling | Instinct 920 Instinct 920 | 920 | -0.5% | 8.41 | -3.8% | 880 | C2 Mid-low aspect |
| GONG | Curve H V3 FG M | 920 | -0.5% | 8.40 | -3.9% | 880 | C2 Mid-low aspect |
| GONG | Ypra Slalom V3 Atmo L | 900 | -2.7% | 8.90 | +1.8% | 880 | C3 Mid aspect |
| GONG | Fluid H V3 FG M | 910 | -1.6% | 8.40 | -3.9% | 870 | C2 Mid-low aspect |
| AFS | Silk V2 Front Wing Silk 950 | 950 | +2.7% | 9.00 | +3.0% | 925 | C3 Mid aspect |
| GONG | Ypra Surf Fast V3 Atmo XL | 920 | -0.5% | 8.20 | -6.2% | 870 | C2 Mid-low aspect |
| Takoon | Flare Front Wing 950 | 950 | +2.7% | 8.30 | -5.0% | 890 | C2 Mid-low aspect |
| AFS | Pure Fuselink Foil (monobloc front wing + fuselage) Pure 900 | 900 | -2.7% | 9.20 | +5.3% | 900 | C3 Mid aspect |
| Code Foils | X Series Front Wing 890X | 890 | -3.8% | 8.20 | -6.2% | 852 | C2 Mid-low aspect |
| AFS | Evo Front Wing 950 | 950 | +2.7% | 8.10 | -7.3% | 880 | C2 Mid-low aspect |
| RRD | Flying Fish Front Wing Y30 900 | 900 | -2.7% | 9.40 | +7.6% | 910 | C3 Mid aspect |
| Unifoil | Aggression 150 Aggression 150 | 967 | +4.5% | 8.20 | -6.2% | 890 | C2 Mid-low aspect |
| Family | Phantasm PTM |
|---|---|
| Size | 899 |
| Area, cm² | 925 |
| Area basis | unknown |
| Span, mm | 899 |
| Chord, mm | — |
| Aspect ratio | 8.74 |
| Band | C3 Mid aspect |
| Brand files it under | Surf / carve |
| Disciplines | wing, prone |
| Construction | carbon |
| Model year | 2022 |
| Source | retailer |
The brand's published aspect ratio agrees with its own span and area (span² ÷ area) to within 5%, so the figure is confirmed.
See Slingshot 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.