Mizuno has added two new models to its Pro range of irons with the launch of the M-13 and M-15, which are part of the brand’s all-new Modern Series, plus a new line of utility irons, the Pro Fli-Hi.
Sitting alongside the existing Signature Series (S-1 and S-3), the Modern Series represents a fresh evolution in forged performance. It’s been engineered for players looking for a touch more speed, forgiveness and playability, while maintaining unmistakable Mizuno Pro shaping and feel.
The Modern Series debuts with two distinct models, each created with a specific type of ball striker in mind. The M-13 brings tour-preferred proportions and a faster, more consistent flight profile, while the M-15 offers higher launch and additional forgiveness that blends smoothly through the set. Both retain the craftsmanship and forged heritage that sit at the heart of every Mizuno Pro iron.
M-13 IRONS
The M-13, successor to the Mizuno Pro 243, combines traditional head shaping with modern construction to create a set that offers more speed through the long irons and greater precision in the scoring clubs. Its three-part forging story adapts performance across the bag while preserving a consistent feel and look from 4-iron to wedge.
In the 4 and 5 irons, a Pocket Cavity Grain Flow Forged construction merges Chromoly 4120 with 431 stainless steel, enabling Mizuno’s thinnest ever Contour Ellipse Face, just 1.37mm thick, around 35% thinner than the Mizuno Pro 243. This innovation unlocks higher ball speeds and distance while keeping the responsive feedback expected from a forged iron.
Moving into the 6, 7 and 8 irons, a Micro-Slot Grain Flow Forged construction with a face 0.3mm thinner than its predecessor increases flex and delivers controlled speed gains with a mid-to-high COR performance. From 9-iron through to gap wedge, a single-piece 1025 Elite forging prioritises precision, control, and the renowned soft impact feel that has defined Mizuno’s short irons for decades.
Mizuno’s Harmonic Impact Technology, combined with a copper underlay and full cavity ABS badge, fine-tunes vibration patterns and delivers a clean, tour-ready appearance. The Triple Cut Sole introduces sharper leading edges and bevelled trailing relief, ensuring dependable turf interaction from every lie. Completing the design, a Nickel Chrome Satin Brush finish reduces glare and reinforces the premium aesthetic.
M-15 IRONS
The M-15, successor to the Mizuno Pro 245, offers a fully integrated progression of performance from long iron to wedge. Each section of the set is designed with a specific purpose, creating smooth transitions in both shape and feel throughout.
At the core of the design lies the Contoured Ellipse Face, the latest development of Mizuno’s CORTECH technology, which defines the 4–8 irons. This multi-thickness forged construction, supported by a hollow body design, optimises ball speed and consistency while preserving the soft, responsive feel Mizuno players prize.
To improve launch and stability, tungsten weighting of 51g in the long irons and 50.3g in the mids has been strategically suspended within the head, helping produce straighter, more forgiving performance. The long and mid irons pair a Grain Flow Forged 4135+ Chromoly face and neck with a stainless-steel back piece for additional rebound. The 9-iron to gap wedge transitions into a partial hollow 1025E Grain Flow Forged HD body with a stainless back, a construction that emphasises control, precision and manoeuvrability.
Refined sole geometry with added bounce encourages a cleaner entry and smoother exit through the turf, maintaining consistency across all course conditions. Mizuno’s Harmonic Impact Technology and copper underlay reduce sound pressure around the 6kHz frequency, producing the soft yet solid strike that Mizuno players instinctively recognise. Finished in Premium Nickel Chrome Satin, the M-15 brings a contemporary look with tour-informed shaping.
PRO FLI-HI UTILITY IRON
Also joining the all-new Mizuno Pro line-up is the Pro Fli-Hi. A tour-proven utility long iron, the Fli-Hi is designed to deliver faster ball speeds, higher launch, and refined workability, all wrapped in a compact, tour-preferred profile.
At the core of the new Fli-Hi is Mizuno’s most advanced face construction to date. The Contoured Ellipse CORTECH design expands the effective hitting area by 37%, ensuring faster ball speeds and more consistent performance across the face. A multi-thickness face, optimised through detailed CAE analysis (Computer-Aided Engineering), further enhances peak COR to provide explosive distance without sacrificing control.
To improve launch conditions, Mizuno has strategically positioned 26g of tungsten low and deep within the head. This precise weighting geometry not only raises the peak trajectory but also ensures added stability and forgiveness. Combined with Mizuno’s innovative L-Face geometry, a breakthrough welding technique that increases sole flex, the result is a thinner topline that retains strength while generating additional speed at impact.
The Fli-Hi benefits from Mizuno’s Harmonic Impact Technology, with carefully engineered internal ribs that fine-tune vibration frequencies to deliver a solid, tour-validated impact sensation. The acoustic profile has been matched to the brand’s previous Fli-Hi models, ensuring continuity of feel while offering subtle refinements demanded by tour players.
The Fli-Hi also marks a construction milestone as the first Mizuno iron to utilise Nickel Chromoly 4335+ Hollow Body technology. The ultra-high-strength, heat-treated face delivers explosive ball speeds, while the softer untreated body provides adaptability in loft and lie adjustments, ensuring tour fitters can dial in performance precisely to player preference.
Visually, the Fli-Hi features a new gunmetal satin finish that reduces glare at address, framing the ball cleanly to create the appearance of a more compact, confidence-inspiring head.
RRPs & Availability
The Mizuno Pro M-13 and M-15 irons will be offered in 4-PW with Modus 3 Tour shafts, with an RRP of £240/€295/$215 per club. The Mizuno Pro Fli-Hi #2 has an RRP of £275/€330/$270. They will all be at retail from February 5, with pre-sale from January 19.