Fujikura NX Speeder Gold Driver ShaftOverview For the first time in eight years, the Speeder line has been completely redesigned and features a new breakthrough technology called Variable Torque Core (VTC). Developed with Fujikura's enso system, the addition of VTC in Speeder NX focuses on tightening torque in the tip and handle sections of the shaft, promoting stability and improved dynamic loft and face closure at impact. Variable Torque Core Derived from enso analytics, Variable