Updated VARIABLE TORQUE CORE technology newly adopted in Speeder NX.

By tightening the torque on the hand side more than Speeder NX, the head accelerates smoothly from the turn.

A further increase in head speed was achieved by creating a difference in torsional rigidity with the middle part.

By suppressing the reverse bending of the shaft during the downswing, it enables a swing with a sense of unity.