What Are Zero Torque Putters?

What Is Torque in a Putting Stroke?

Torque is the twisting force created when a force acts off-center from an object’s center of mass. In a putter, torque is generated when the force from your hands acts along a shaft axis that isn’t aligned with the putter’s center of mass (COM). That misalignment creates a lever arm, and the longer the lever arm, the more torque is generated, causing the putter face to twist and rotate away from square.

How Zero Torque Putters Reduce Face Rotation

Z-Stroke’s zero torque putter design aligns the shaft axis directly with the putter’s center of mass. With little to no lever arm for your hands’ force to act on, less torque is generated at the source, giving the putter face less tendency to rotate throughout the stroke.

Moment of Inertia (MOI): The Other Half of Putter Stability

Torque, once generated, causes rotation. Moment of Inertia (MOI) is the property that resists that rotation: the higher a putter’s MOI, the less it twists in response to a given amount of torque. This is why some traditional putters with an off-axis shaft can still feel relatively stable. High MOI doesn’t eliminate the torque being generated, but it reduces how much the face actually twists because of it.

Zero Torque + High MOI: A Two-Part Approach to a Stable Putter Face

Every Z-Stroke putter combines both principles: shaft-to-COM alignment to minimize torque at its source, and high MOI, achieved through precise perimeter weighting, to resist whatever rotation remains, whether from an imperfect stroke or an off-center strike. The result is a putter face designed to stay square more consistently through the stroke.