JPX919 Forged Irons: Boron-Infused Steel

A new reverse-milled clubface, CNC-milled from the sole up to create a larger area of minimum face thickness, makes the streamlined JPX919 Forged Mizuno’s fastest ever one-piece forged iron in terms of measured ball speed. The resulting weight removed from the face also allows a lower, deeper center of gravity making it easier for the flight of the long and mid-irons. The trademark workability and elevated Grain Flow Forged HD feedback ensure that the JPX919 Forged is also Mizuno’s most versatile iron.


Like the JPX919 Tour and JPX919 Hot Metal, the JPX919 Forged features a durable Pearl Brush finish and a stability frame, open at the heel portion to enhance stability, launch and loft-appropriate flight apex for soft-landing approaches.


Specifically, the Forged model is Grain Flow Forged HD (High Density) from a single billet of 1025B mild carbon steel in Hiroshima Japan for an unmistakable Mizuno feel. Just a trace of Boron infused into the billet makes it 30% stronger and allows for greater design possibilities in a forged head.


The overall package is one of “balanced performance” with the JPX919 Forged offering the ultimate blend of ball speed, stability, and feedback within a more refined playing profile.


“A deeper, wider milling across the back of the face allows the JPX919 Forged to transfer more energy to the ball than any previous Grain Flow Forged iron,” says David Llewellyn, Director of Golf R&D at Mizuno. “None of that would have been possible without that small addition of Boron into our steel billets, which gives that additional strength needed to reinforce the face.”



Will we see you with the JPX919 Forged irons this season? Tell us at @MizunoGolfNA.

Published: September 2018