Mizuno has added to its Pro range with the launch of the M-13 and M-15 irons – part of the all-new Modern Series.
Sitting alongside the existing Signature Series (S-1 muscleback and S-3 cavity), the Modern Series is a fresh evolution in forged performance, engineered for players looking for a touch more speed, forgiveness and playability while maintaining the Mizuno Pro shaping and feel.
The Modern Series debuts with two models, each created with a specific type of ball striker in mind. The M-13 (RRP £240 per iron) brings tour-preferred proportions and a faster, more consistent flight profile; while the M-15 (RRP £240 per iron) offers higher launch and additional forgiveness that blends smoothly through the set.
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 four-iron to wedge.
In the four and five 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 six, seven and eight 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 nine-iron through to gap wedge, a single-piece 1025 Elite forging prioritises precision, control and soft impact feel.
Mizuno’s Harmonic Impact Technology – combined with a copper underlay and full cavity ABS badge – finetunes vibration patterns and delivers a clean, tour-ready appearance. Meanwhile, the Triple Cut Sole introduces sharper leading edges and bevelled trailing relief, ensuring dependable turf interaction from every lie. Completing the design is a Nickel Chrome Satin Brush finish.
The M-15 – successor to the Mizuno Pro 245 – offers a fully integrated progression of performance from long-iron to wedge.
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 soft, responsive feel.
To improve launch and stability, tungsten weighting of 51g in the long irons and 50.3g in the mid irons 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 nine-iron to gap wedge transitions into a partial hollow 1025E Grain Flow Forged HD body with a stainless back – emphasising control, precision and manoeuvrability.
Refined sole geometry with added bounce encourages a cleaner entry and smoother exit through the turf, while Mizuno’s Harmonic Impact Technology and copper underlay reduce sound pressure around the 6kHz frequency, producing a soft yet solid strike. The M-15 is then finished in Premium Nickel Chrome Satin.
