Turbo Tunnel 7.5 Turbo Tunnel Fin

The 7.5 Turbo Tunnel fin from Turbo Tunnel. The extraordinary Turbo Tunnel™ introduces a major technological breakthrough in fin design and function. The patented tunnel design adds a new dimension to the performance of a surfboard. Unlike a flat fin, which can only provide forward direction and horizontal control, the Turbo Tunnel™ adds a new feature called vertical control, which stabilizes the tail as the board moves through the water. This fin helps give unbelievable nose rides and smooth powerful turns.