In a departure from conventional expectations, combining lightweight design with the capacity to halt large fish isn't commonly associated. Thunnus CI4 draws inspiration from Shimano's bicycle division, employing carbon materials in high-impact scenarios to meet anglers' demands for a lightweight reel with bait-running capabilities. Weighing up to 7 ounces less than its predecessor, Thunnus CI4 maintains its power while introducing new drag systems for both the primary drag and the baitrunner drag. Renowned as the most efficient live bait spinning reel available, Thunnus CI4 offers unparalleled adaptability for fishing with live bait in diverse conditions, all while ensuring smooth and potent stopping power.