Channel Islands Tri Small Thruster Fins

True Ames CI Small Thruster Fin Set is a precision-engineered fiberglass tri-fin configuration built in collaboration with Channel Islands, tailored for surfers seeking a nimble, reactive ride. Featuring an upright template with moderate rake and reduced overall area, this fin set delivers swift pivoting and tight arcs while maintaining drive and hold in critical sections. Side fins measure 4.50 inches in height, have a 4.45-inch base, and a surface area of 15.09 square inches. The center (rear) fin is slightly smaller at 4.35 inches tall, with a 4.30-inch base and 13.99 square inches of surface area. Constructed from solid fiberglass with flat inside foils, these fins balance speed and release, making them ideal for small to medium surf or for surfers wanting quick direction changes and lively performance on compact boards.