Srixon ZXi4, ZXi5, ZXi7 and ZXiU irons: 4 things to know

The search for improving iron feel is never-ending for clubmakers, but Srixon says it’s made a breakthrough with its new Impact Forging tech in the latest Srixon ZXi irons.

Here are four things to know about the 2025 Srixon ZXi4, ZXi5, ZXi7 and ZXiU irons.

1. New materials provide new benefits

Srixon has a new process for forging its irons: i-FORGED, which is short for Impact Forged. The new process helps strengthen and enhance the steel used to build the clubs.

“The i-Forging process gave us the unique ability to select which steels would be best suited for each ZXi Iron, promoting a better hitting feel and overall performance,” said Dustin Brekke, Srixon’s director of engineering. “On the ZXi7 Players Iron, we used a softer steel in S15C. It’s the softest steel we’ve ever had in a forged Srixon Iron. Each new material upgrade serves a specific purpose to balance and strengthen each iron and give players immediate feedback at contact.”

Armed with the new material and forging process, the new single-piece forged ZXi7 irons are 7 percent softer than the previous generation ZX7 Mk II, while the multi-piece ZXi5 and ZXiU have face materials that are 14 percent softer than their predecessors, Srizon says.

2. Better feel

In the ZXi7 irons, which are the player’s iron of the family, Srixon has expanded the PureFrame technology used in the previous generation to further improve feel.

PureFrame is a piece of steel forged directly into the body of the iron to dampen vibrations and with the larger PureFrame comes a 9.3 percent reduction in vibration displacement compared to ZX7 Mk II.

In the ZXi4, ZXi5 and ZXiU, the third generation of Srixon’s MainFrame variable face thickness technology is back again to increase MOI and ball speeds. MainFrame features a variable thickness network of grooves, channels and notches milled onto the backside of each face to maximize energy transfer at impact.

For the new ZXi series, designers widened the toe-side channel, allowing them to reposition up to 2 grams of mass lower to increase ball speed and MOI.

3. Previous Srixon tech returns

On the underside of each ZXi iron, Srixon’s Tour V.T. sole geometry helps ensure clean contact through a combination of sole width, bounces and notches. The grind will be present in the ZXiU Utility irons as well with this series for added versatility — a first for a Srixon Utility iron.

The irons sets also feature a progressive set of grooves with the 3- through 7-irons having wider grooves while the scoring clubs have deeper and tighter grooves to ensure spin consistency across the set. There is also laser milling between the grooves.

4. Three models and a utility

ZXi irons are meant to be blended together as they all feature nearly identical topline thicknesses and similar shaping.

“Every year we’re seeing more people choose combination sets with our irons,” Brekke said. “We typically have three specific duos that are most popular among players — the ZXiU and ZXi7 is the most used among our Tour staff, pairing forgiving long irons with highly workable short Irons. The ZXi5 and ZXi7 are for players wanting powerful distance and workability. And we have the ZXi4 and ZXi5 combination that pairs cavity-back short irons with hollow long irons for maximum forgiveness.”

As the single-piece forged iron in the series, the ZXi7 (Available 3-AW) are meant to cater to elite ball strikers with the shallowest cavity for more precision and workability.

The ZXi5 irons (available 3-AW) are the players’ distance irons while the hollow-bodied ZXi4 irons (4-SW) are the game-improvement entry.

The series is rounded out by the ZXiU Utility iron, which is available in three lofts from 2- to 4-iron to help give players either a boost with the longer irons or a penetrating driving iron.

Price and availability

Srixon ZXi irons are available for preorder starting Jan. 13, and will arrive at retail on Jan. 24.

The ZXi4, ZXi5 and ZXi7 iron sets will be available for $1,299 as a 7-piece set, and the ZXiU Utility irons will cost $239.99 per club.

Want to overhaul your bag for 2025? Find a fitting location near you at True Spec Golf.