The three types of fins available for the MirageDrive offer the same kind of speed and resistance variation as the gears on a bicycle. The Standard Fins serve as a comfortable middle-gear for cruising pedalers in average-length Mirage models.
Ideal for users who need a bit more speed, yet don't want to increase overall draft beyond that of the Standard Fin. The ST Fin square-top design increases fin surface area while maintaining the 1-foot mast length.
Add even more speed to your MirageDrive with a ST Turbo Fin upgrade. The increased fin surface area and mast length provide added resistance and water displacement producing more thrust with each stroke.