The Project X HZRDUS Gen4 Black is the most advanced HZRDUS yet. Utilising a new Dual Torsional Design throughout the shaft, HZRDUS Black Gen 4 creates optimised torques and maximum stability while featuring the classic HZRDUS Black profile of stiff butt, x-stiff midsection and stiff tip, suited for an aggressive swinger.
 
Dual Torsional Design is a proprietary process that allows our engineers more freedom when designing a golf shaft—allowing them to dial in stability and desired torques more efficiently, producing a fully optimised golf shaft with regards to player profile.