SHIMANO RULL TWINPOWER 4000 FD The Shimano Twin Power has a proud 30-year-old. For 2020, the newly released model is equipped with a metal rotor that integrates the Coresolid philosophy of quality and solidity. This has been pursued for many years and is designed to suppress deformation and twisting of the bobbin case underload. In combination with the metal Hagane Body, the rigidity and durability of the frame is significantly improved. In addition, the rigid metal rotor provides a stable wrap feel comparable to that of a Stella - the ultimate in smooth winding. To improve casting performance, the new Long Stroke Spool design has been incorporated. The Twin Power series has continued to evolve into a robust and reliable reel that anglers can use with confidence in all conditions.