This electric fin made my kayak faster than expected | Testing New K4 Sport e-Fin

In this video, we're testing the new K4 Sport Electric Fin on a variety of inflatable watercraft, including SUPs, kayaks, and other inflatables. The K4 Sport features two power modes: • D Mode – Normal cruising • S Mode – Sport mode for maximum performance During our testing, we achieved speeds of up to approximately 9 MPH, depending on hull design, water conditions, rider weight, and overall load. For power, we used a 48V 25Ah battery purchased on Amazon for about $250 and mounted it inside a $29 Harbor Freight dry box, creating an affordable and practical setup for extended run times on the water. Whether you're looking to add speed to your inflatable paddle board, kayak, fishing platform, or other inflatable watercraft, the K4 Sport Electric Fin offers a simple way to cover more distance with less effort. What do you think of the performance? Let us know in the comments below. #ElectricFin #InflatableSUP #SUPMotor #ElectricKayak #KayakMotor #InflatableBoat #BoatsToGo #WaterSports #PaddleBoard #K4Sport Explore our full selection and find the perfect inflatable boat for your next water adventure at 👉 https://www.BoatsToGo.com Stay Connected With Us: Facebook:   / boatstogoofficial   Instagram:   / boatstogo_com   TikTok:   / boatstogo.com   Pinterest:   / saturnboats