The StingRay StarFire Hydrofoil fits most outboards and sterndrives of 40 HP and up and helps eliminate porpoising, chinewalking and cavitation. Made of marine-grade polypropylene for resistance to rust, corrosion and fading, the hydrofoil's swept-back Delta Wing profile provides extreme stabilization and minimal drag in the water. StingRay StarFire Hydrofoil Black - Motor And Fuel Acces at Academy Sports