KT Foiling Halo 670 Halo 670 hydrofoil front wing: 670 cm², 725 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 |
|---|---|---|---|---|---|---|---|
| Unifoil | Aggression 105 Aggression 105 | 677 | +1.0% | 8.10 | +1.2% | 740 | C2 Mid-low aspect |
| Armstrong | MA Mk II (Mid Aspect) MA690 | 690 | +3.0% | 8.00 | +0.0% | 767 | C2 Mid-low aspect |
| GONG | Ypra Freestyle V3 M | 680 | +1.5% | 7.80 | -2.5% | 730 | C2 Mid-low aspect |
| F-One | SK8 HM Carbon (T2) SK8 HM CARBON 650 | 650 | -3.0% | 8.10 | +1.2% | 725 | C2 Mid-low aspect |
| Sroka | S-Foil 670 S HA 670 S HA | 670 | +0.0% | 7.50 | -6.2% | 700 | C2 Mid-low aspect |
| Takoon | Flare Front Wing 650 | 650 | -3.0% | 8.30 | +3.8% | 720 | C2 Mid-low aspect |
| Sabfoil | 707 Balz Muller Limited 707 Balz Müller Limited | 661 | -1.3% | 7.55 | -5.6% | 707 | C2 Mid-low aspect |
| Code Foils | X Series Front Wing 700X | 700 | +4.5% | 8.20 | +2.5% | 755 | C2 Mid-low aspect |
| Sabfoil | Blackbird Razor 737 Blackbird Razor 737 | 648 | -3.3% | 8.40 | +5.0% | 737 | C2 Mid-low aspect |
| GONG | Ypra Freestyle Micro V3 Atmo M | 660 | -1.5% | 7.40 | -7.5% | 700 | C2 Mid-low aspect |
| ENSIS | INFINITY ACE Front Wing 690 | 690 | +3.0% | 7.50 | -6.2% | 720 | C2 Mid-low aspect |
| Sabfoil | Medusa PRO 769 Medusa PRO 769 | 700 | +4.5% | 8.44 | +5.5% | 769 | C2 Mid-low aspect |
| Takuma | Kujira II Front Wing Kujira II 650 | 650 | -3.0% | 7.40 | -7.5% | 690 | C2 Mid-low aspect |
| North | Sonar MA700v2 MA700v2 | 700 | +4.5% | 7.40 | -7.5% | 720 | C2 Mid-low aspect |
| Family | Halo |
|---|---|
| Size | Halo 670 |
| Area, cm² | 670 |
| Area basis | unknown |
| Span, mm | 725 |
| 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.