Davis Doel-Fin Black Hydrofoil for Outboards

The Davis Doel-Fin is the original hydrofoil, developed by an aeronautical engineer to improve overall performance on any boat running an outboard motor or outdrive unit.

Molded in two pieces of guaranteed unbreakable, high-strength plastic, each foil flexes independently to absorb shock rather than transmitting every impact straight into the mounting hardware.

The positive effects include greater stability, consistent planing at lower RPM, and better fuel economy, all without any switches, wiring, or moving parts to maintain. Explore more self-leveling trim tabs.

• Original hydrofoil, developed by an aeronautical engineer
• Unbreakable high-strength plastic, flexes to absorb shock
• Greater stability, planes at lower RPM
• No switches, wiring, or moving parts