We've spent decades in pursuit of the best-feeling Irons possible. i-FORGED, or Impact Forged, is our latest step in that journey. It's an array of our greatest innovations in Iron metallurgy to date, cementing our worldwide leadership as forging technologists.

Srixon's new i-FORGED process starts with finding the 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.

Then it takes 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 billets 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.

Lastly, 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.

ZXi4 features

• i-FORGED Construction: ZXi4 Irons feature a softer SUS17-47 material, which delivers dramatically better feel than previous generations of ZX4 Irons. This softer material allows us to adjust loft and lie more easily to ensure the perfect fit.

• MAINFRAME: MainFrame saves additional weight and adds more MOI through an enhanced network of milled channels on the back side of the Iron face. At impact, this system amplifies ball speed and adds forgiveness.

• Tour V.T. Sole: Prized by tour pros, Tour V.T. Sole's unique combination of leading-edge bounce plus trailing-edge relief means that, no matter how steep your downswing, you'll glide through turf to compress the ball with full power.

• Progressive Grooves: The 4i-7i features wider grooves, while the 8i-SW have deeper, closer-set grooves, to ensure consistent spin across the set. Laser milling between each groove, on every loft, adds bite on every strike.

• Players-Inspired Shape: ZXi4's unique hollow design features moderate sole width, our longest blade length, and our highest offset for max forgiveness, all while still offering an appealing look at address.

SPECS

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