North Sonar Surf (SF) Front Wing Series
Speed / Glide / Pump / Surf Performance
The Sonar SF Series (Speed/Glide Foil) is engineered for experienced riders chasing efficiency, glide, and smooth carves across all foil disciplines. With its high aspect ratio, the SF series is optimized for pump, dock starts, lightwind winging, prone foiling, and downwind surfing, offering a performance ride with impressive speed and long, flowing glide.
Whether you’re linking waves in the surf, maximizing your pump game, or pushing for endurance on a downwind run, the SF Series delivers unmatched flow and responsiveness. These foils are constructed in lightweight carbon pre-preg only, for maximum stiffness and minimal flex — ensuring every pump, carve, or connection is dialed in.
Why Choose the SF Series?
- High Aspect Efficiency: Designed to maximize glide and minimize drag
- Surf-Focused Shape: Thin profile and long span deliver effortless flow in waves
- Glide Machines: Best in class for pumping, linking waves, and dock starts
- Optimized for Progression: While designed for intermediate to advanced riders, their pitch stability allows confident control
- Single Construction: Available exclusively in pre-preg carbon for maximum performance
Performance Breakdown (SF Series Front Wings)
| Model | Area (cm²) | Span (mm) | Aspect Ratio | Primary Use | Other Disciplines | Skill Level |
|---|---|---|---|---|---|---|
| SF530 | 530 | 750 | 10.6 | Tow Foil, Kite, Surf (Overhead) | High-Speed Pump | Advanced |
| SF680 | 680 | 790 | 9.2 | Wing Freeride, Kite | Pump, Tow, Small Surf | Intermediate–Advanced |
| SF830 | 830 | 895 | 9.7 | Wing Freeride, Surf, Pump | High Speed Downwind, Wake | Intermediate–Advanced |
| SF930 | 930 | 900 | 8.8 | Wing Lightwind, Pump | Surf Small Waves, Dock Start | Novice <85kg / Adv >85kg |
| SF1080 | 1080 | 915 | 7.7 | Wing Lightwind, Pump | Surf, Downwind, Wake | Novice >85kg / Adv >85kg |
| SF1230 | 1230 | 910 | 7.1 | Lightwind Wing, Downwind | Dock Start, Surf Small Waves | Novice >95kg / Adv >95kg |
Note: Rider weight suitability based on image guidance
- Novice <85kg / >85kg = Suggested starting rider weight
- Advanced = Experienced riders pushing higher performance
Best For
- Wing Foiling: Especially in lightwind or downwind conditions
- Pump Foiling: Massive glide and low stall speeds for dock and flatwater pump
- Surf Foiling: Ideal for small and medium surf with linked wave carving
- Tow & Wake: SF530 and SF680 are standout models for controlled, fast riding
- Downwind: SF1080 and SF1230 offer excellent glide for longer downwind lines
Construction
- Carbon Pre-Preg Only
Lightweight, stiff, and high-performance, the SF Series is built for riders who demand no compromises.
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