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The new ZX4 irons are touted by Srixon officials for “bringing forgiveness” to the company’s family of irons by giving players “the freedom to strike the ball across the face while still enjoying high shots that … find their targets.”
Fully hollow through the set, these irons boast a mid-sized profile and a forged HT1770 steel face. The placement of premium, high-density tungsten in the base of the long- and mid-irons is intended to lower the center of gravity in ways that promote high and easy launches. A 431 steel body absorbs vibrations for a softer feel, the company says, while a Tour V.T. Sole acts to improve turf interaction by making it easier for the club to glide smoothly through the grass, even if a player strikes slightly behind the ball.
Another feature of the ZX4 line is something called MainFrame technology. Developed through the use of artificial intelligence and machine learning, and milled into the backside of each clubface, it is a variable thickness pattern of grooves, channels and cavities that is made to maximize face flex for more ball speed and greater distance.