Technology
VR-Titanium
A world's first, brand-new titanium alloy that adds silicon to the composition—dramatically increasing design freedom for face and body. Leveraging VR‑Titanium enables more overall flex from the face through body, greatly heightening initial ball speeds.
UltiFlex
This all-new design optimizes the face and body thickness and roundness for increased overall head flex at impact—expanding both the peripheral high‑speed zone and the even-faster central zone for higher ball speeds.
ActivWing
Refined steps on the crown and a new, larger step on the sole help harness aerodynamic forces to better stabilize the clubhead during your downswing and guide the club face into optimal strike position, making it easier to hit the sweet spot and improve ball speeds.
High Grip Milled Pattern
New precision laser milling on the toe and heel delivers optimal gear effect and directional stability—even on off‑center strikes or in wet conditions.
Rebound Frame with L-Groove
An "L‑groove" at the lower body reduces stiffness under the face to amplify flex and increase ball speeds. For XXIO 14, the L-groove is positioned lower than the previous Iron model for greater flexibility.
