K4 Fins, designed by British pro windsurfer Steve Thorp, specialise in high-performance wave, freestyle, and speed fins. Made from a unique plastic composite, these fins offer exceptional flex, reflex, and durability. With over 30 years of experience, K4 Fins combines engineering expertise with a passion for windsurfing to create innovative products. Manufactured in the UK, their fins are trusted by top athletes worldwide for superior manoeuvrability and performance.