KT Foiling Halo 550 Halo 550 hydrofoil front wing: 550 cm², 665 mm span, aspect ratio 8.00, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from KT Foiling'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 |
|---|---|---|---|---|---|---|---|
| RRD | Thunder Front Wing Y30 550 | 550 | +0.0% | 8.00 | +0.0% | 660 | C2 Mid-low aspect |
| Sabfoil | Medusa PRO 669 Medusa PRO 669 | 548 | -0.4% | 8.14 | +1.8% | 669 | C2 Mid-low aspect |
| F-One | SK8 HM Carbon (T2) SK8 HM CARBON 550 | 550 | +0.0% | 8.20 | +2.5% | 670 | C2 Mid-low aspect |
| Sroka | S-Foil 550 S HA 550 S HA | 550 | +0.0% | 8.30 | +3.8% | 678 | C2 Mid-low aspect |
| Takoon | Flare Front Wing 550 | 550 | +0.0% | 8.30 | +3.8% | 660 | C2 Mid-low aspect |
| Sabfoil | Razor PRO 675 Razor PRO 675 | 550 | +0.0% | 8.40 | +5.0% | 680 | C2 Mid-low aspect |
| Levitaz | Front Wing FS 540 FS 540 | 540 | -1.8% | 8.40 | +5.0% | 670 | C2 Mid-low aspect |
| Duotone | Blitz D/LAB 550 | 550 | +0.0% | 8.60 | +7.5% | 680 | C3 Mid aspect |
| ENSIS | INFINITY ACE Front Wing 540 | 540 | -1.8% | 7.50 | -6.2% | 635 | C2 Mid-low aspect |
| Family | Halo |
|---|---|
| Size | Halo 550 |
| Area, cm² | 550 |
| Area basis | unknown |
| Span, mm | 665 |
| Chord, mm | — |
| Aspect ratio | 8.00 |
| Band | C2 Mid-low aspect |
| Brand files it under | Surf / carve |
| Disciplines | — |
| Construction | SM 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 KT Foiling 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.