Take your Hobie MirageDrive kayak to a faster level. The ST TurboFin Kit V2 will boost your cruising and sprinting speeds with these bigger, sleeker fins. The longer fins will increase your lateral resistance for sailing upwind. The Square Tip design requires a lot of effort which is equivalent to riding a bike on an incline. You will be able to get top speed with the tension speed screw. This kit is compatible with all Hobie MirageDrive kayaks.