Limited-edition ZXi5 Black Chrome Irons showcase our most potent blend of power and playability, with a bold, blacked-out look. Our revolutionary i-FORGED process, combined with the latest Srixon ball speed and distance technologies, gives ZXi5 Irons unprecedented feel, speed, and power on every shot. While the black chrome finish enhances durability and helps reduce glare at address. Ideal Steel What's the softest steel we've ever used to make an iron? S15C, which makes ZXi7 7% softer. ZXi5 and ZXiU face plates are also 14% softer. And ZXi4 now features the softer SUS17-47 for its body material. Condensed Forging Using softer steels enhances ZXi feel. But strength matters, too. To deliver both, we use condensed forging. Here's how it works; THe hydraulic dies which forge red-hot bullets into ZXi irons imprint an array of raised features onto each rough iron shape. A second forge condenses those protrusions back into the clubhead, placing strength in those precise locations without sacrificing overall feel. Heat Softening Because condensed forging adds localized strength right where we need it, we have the freedom to re-optimize the temperature of our heat-treating ovens and produce our softest treatments yet.
