The pinnacle of the Poison series, the Poison Ultima brings Shimano's JDM offering to the North American market and generously showcases Shimano's most advanced rod technologies. Shimano's flagship Spiral X Core technology blends lightness and increased multi-directional strength while combining with Hi-Power X technology for added blank twist resistance. High-performance and lightweight Shimano X-Guides draw out the full potential of Poison Ultima's rod design for trouble-free and heightened casting performance. Casting models feature Shimano's Full Carbon Monocoque grip that leverages a full-carbon design while delivering extreme sensitivity and showcasing a new handle shape developed by scientifically analyzing tournament anglers' movement and holding posture to elevate performance.