Maximum Distance. Exceptional Forgiveness. Premium Black Design. The Mizuno JPX 925 Hot Metal Black irons redefine the performance of an already industry-leading franchise, delivering a modern combination of power, feel, and style. Powered by high-strength Nickel Chromoly 4335 and a completely re-engineered CORTECH Design featuring a Contour Ellipse face — now up to 30% thinner than the previous generation — these irons deliver explosive ball speeds, longer carry distances, and remarkable consistency even on off-center strikes. For the first time in the Hot Metal series, multi-material construction adds tungsten weighting low in the 4–7 irons, lowering the center of gravity for a towering launch and steeper, green-holding landing angles. The exclusive Black ION Plating finish gives the set a premium matte look that eliminates glare and turns heads on every tee.
These irons are ideal for mid-to-high handicap golfers who demand long, stable ball flights, maximum forgiveness, and the confidence of a striking modern black design.
| Iron Type | Forgiving Speed Cavity |
| Suitable For | Mid-to-high handicap players |
| Head Length | 85.4 mm |
| Head Material | Nickel Chromoly 4335 |
At the heart of the JPX 925 Hot Metal Black lies a completely re-engineered CORTECH Design featuring the new Contour Ellipse face — Mizuno's most advanced 5th-generation Chromoly multi-thickness profile to date. The primary goal is singular: maximize CORAREA so that ball speed is not just peak at the sweet spot, but consistently high across the entire striking surface. The new face geometry is up to 30% thinner than the previous generation, pushing the boundaries of what Nickel Chromoly 4335 can deliver. The result is a face that responds with explosive energy on both pure strikes and slight mishits, producing longer, more predictable distances throughout the entire bag.
For the first time in the Hot Metal franchise, Mizuno introduces multi-material construction to the JPX 925 Hot Metal Black, pairing high-strength Nickel Chromoly with strategically placed tungsten weighting in the 4–7 irons. By positioning this dense metal low in the clubhead, Mizuno achieves a lower center of gravity that generates a towering, high-launching ball flight with a steeper, green-holding descent angle. This combination of added height and precision landing makes it easier than ever to attack pins confidently with longer irons. Consequently, the JPX 925 Hot Metal Black is remarkably precise — a rare and prized trait for such a powerful, distance-focused iron set.
The JPX 925 Hot Metal Black is constructed from Nickel Chromoly 4335, an advanced high-strength alloy that delivers 35% greater strength than standard Chromoly steel. This superior strength-to-weight ratio is the engineering foundation that allows Mizuno's designers to build a face that is simultaneously thinner, more flexible, and structurally more resilient. A thinner face flexes more at impact, directly translating to a higher peak COR (Coefficient of Restitution) and, by extension, maximum CORAREA — meaning the fastest ball speeds are distributed broadly across the face, not just in a small central zone. The alloy's inherent stiffness also ensures the cavity frame remains rigid for consistent performance shot after shot.
The Seamless Cup Face design wraps the face material around the perimeter of the head in one continuous, uninterrupted construction. Re-engineered with a thinner variable sole surface area, this design maximizes the rebound zone by allowing more of the face to flex at impact — including the lower and outer edges where off-center strikes frequently land. The 360-degree thinned perimeter dramatically expands the effective COR zone, ensuring that even shots struck toward the heel, toe, or sole retain outstanding ball speed. Combined with the Contour Ellipse geometry, the Seamless Cup Face is central to achieving the Maximum CORAREA that defines the Hot Metal Black's distance performance.
Mizuno's Harmonic Impact Technology fine-tunes the internal geometry of the cavity frame, producing a more reinforced and rigid structure that enhances both solidity and the distinctive hot impact sound that Mizuno irons are famous for. This latest iteration results in a noticeably stiffer frame compared to the previous generation — improving consistency and preserving energy transfer on every shot. Working in concert, a strategically placed Acoustic Sound Bar precisely attenuates key vibration frequencies at impact. The combined effect is an impact sensation that golfers describe as solid and authoritative, with a crisp, explosive sound that provides immediate and satisfying feedback on every swing.
The defining visual element of the JPX 925 Hot Metal Black is its exclusive Black ION Plating — a premium surface treatment that gives the entire set a sleek, matte black appearance unlike any other iron in the Mizuno lineup. Far more than a cosmetic upgrade, the ION Plating process creates a durable, hard-wearing protective layer that resists wear and maintains its deep, non-reflective finish round after round. By significantly reducing glare in bright sunlight, it allows players to address the ball and execute shots with minimal visual distraction. The result is an iron set that looks as aggressive and purposeful at address as it performs on the course — a true statement piece for any golfer's bag.
Mitsubishi Chemical MMT 65 Graphite — Regular (65 g)
| 4 | 5 | 6 | 7 | 8 | 9 | PW | GW | SW | |
|---|---|---|---|---|---|---|---|---|---|
| Loft | 19° | 22° | 25° | 28° | 32.5° | 37° | 42° | 48° | 54° |
| Lie Angle | 60.5° | 61.0° | 61.5° | 62.0° | 62.5° | 63.0° | 63.5° | 64.0° | 64.0° |
| Offset | 0.224" | 0.213" | 0.201" | 0.189" | 0.173" | 0.154" | 0.130" | 0.106" | 0.083" |
| Club Length | 38.75" | 38.25" | 37.75" | 37.25" | 36.75" | 36.25" | 35.75" | 35.5" | 35.25" |
Right-hand only. Other set configurations or shaft options available on request.
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