PLEASE NOTE: The 688 is currently available in North America ONLY.Some designs don’t follow trends — they redefine them. Meet the F4 Hammerhead. Inspired by the efficiency and precision of its namesake, the Hammerhead brings together extreme aspect ratio, refined hydrodynamics, and controlled maneuverability into a foil that feels fast, efficient, and incredibly composed on the water. The Hammerhead sits among the highest aspect foils on the market, built with one clear objective — maximum glide with minimum drag. Once up and flying, the foil carries speed effortlessly. It connects sections naturally, maintains momentum through lulls, and allows you to stay on foil longer with less input. This isn’t just speed — it’s sustained, efficient glide that keeps building and carrying forward. Controlled, Not Compromised High aspect foils are often fast — but they can feel locked in. The Hammerhead was designed differently. Through careful refinement of span distribution, curvature, and foil sections, we created a wing that maintains its efficiency while still offering predictable, controlled turning. It doesn’t feel loose or unstable — it feels precise, composed, and intentional, allowing you to carve clean lines without breaking flow. Like the hammerhead shark itself — wide, efficient, and highly tuned — the foil delivers both directional stability and refined control. Engineered for Flow The Hammerhead isn’t just about numbers — it’s about how the foil moves through the water. For complete guide of the F4 foil portfolio check out How to choose the right F4 foil. All F4 Foils are designed exclusively for use with F4 masts and within the F4 Foils system. The use for F4 foils with any non-F4 masts and parts is expressly prohibited and voids all warranty coverage. Ultra high aspect ratio for maximum glide and forward projectionMinimal chord profile to reduce drag and improve efficiencyRefined foil sections for smooth lift and low resistanceBalanced curvature for stability at speed and clean turning response The result is a foil that feels clean through the water, with no wasted movement — just pure, efficient flow.
