The use of CI4+ delivers a substantial weight saving on the compact Ultegra reel body, making rod speed easier to generate when distance casting. To further increase casting performance, the Ultegra CI4+ uses Super Slow Oscillation line lay and Shimano's Propulsion Line Management System fitted with a Hi-Speed Drag for increased casting performance and simple, ultra-fast drag adjustment. HAGANE Gear and X-Ship produce powerful winding performance and S A-RB bearings combined with a Shimano roller bearing deliver supreme smoothness.