Integrated ConstructionThe M-13 features a compact, manoeuvrable head shape with a thin, progressively graduated topline throughout the set. The proportions are unmistakably tour-inspired, offering a clean look at address while producing a faster, more consistent flight profile across the bag.Pocket Cavity Grain Flow Forged (4–5 Iron)The 4 and 5 irons utilise a Pocket Cavity Grain Flow Forged construction, combining Chromoly 4120 with 431 stainless steel. This pairing increases strength and face stability in the long irons, unlocking higher ball speed and improved launch without compromising feel.Micro-Slot Grain Flow Forged (6–8 Iron)The 6, 7 and 8 irons feature a Micro-Slot Grain Flow Forged construction with a face that is 0.3mm thinner than the previous generation. This added face flex delivers controlled ball speed and mid-to-high COR performance while retaining the solid, stable feedback expected of a Mizuno forged iron.One-Piece 1025 Elite Forging (9–GW)From 9-iron through to gap wedge, the M-13 transitions to a one-piece Grain Flow Forged 1025 Elite construction. This prioritises precision, trajectory control, and the soft, responsive impact feel that defines Mizuno’s scoring irons, giving players confidence on approach shots and around the greens.Contour Ellipse FaceThe multi-material construction enables Mizuno’s thinnest ever Contour Ellipse Face at just 1.37mm, approximately 35% thinner than the Mizuno Pro 243. This increases ball speed and distance while preserving the refined feel expected from a forged Mizuno iron.Triple Cut SoleThe Triple Cut Sole features sharper leading edges and bevelled trailing relief, promoting consistent turf interaction and reliable contact from a wide range of lies and swing conditions. It allows the club to move cleanly through the turf without excessive digging or bounce.Harmonic Impact TechnologyHarmonic Impact Technology, paired with a copper underlay and full-cavity ABS badge, fine-tunes vibration frequencies to deliver a soft, controlled feel and a clean, tour-preferred sound at impact.Nickel Chrome Satin Brush FinishA Nickel Chrome Satin Brush finish reduces glare at address while reinforcing the refined, premium aesthetic of the Mizuno Pro line.On-Course PerformanceOn the course, the M-13 delivers a penetrating yet controllable flight through the long and mid irons, with noticeably improved speed and launch where it’s needed. The short irons and wedges offer exceptional distance control and feedback, allowing players to flight shots precisely and attack pins with confidence. The set flows seamlessly from 4-iron to gap wedge, maintaining consistent feel and performance throughout.Who It SuitsThe Mizuno Pro M-13 Irons are ideal for accomplished golfers seeking a traditional look with modern performance benefits. They suit players who value forged feel and shot control, but want added speed and forgiveness in the long irons without sacrificing precision in the scoring clubs.Specifications Club Loft Lie Length (60 °) Bounce Dexterity 4i 22 ° 60.5 ° 38.75” 2 ° RH/LH 5i 25 ° 61.0 ° 38.25” 3 ° RH/LH 6i 28 ° 61.5 ° 37.75” 4 ° RH/LH 7i 32 ° 62.0 ° 37.25” 5 ° RH/LH 8i 36 ° 62.5 ° 36.75” 6 ° RH/LH 9i 40 ° 63.0 ° 36.25” 7 ° RH/LH PW 44 ° 63.5 ° 35.75” 8 ° RH/LH GW 48 ° 64.0 ° 35.5” 9 ° RH/LH Built In-House at Nine by Nine GolfEvery Mizuno Pro M-13 iron set is assembled in-house at the Nine by Nine Golf workshop. Each club is built by a single master builder and finished to tour-level tolerances before dispatch. The focus is on accuracy and consistency, ensuring every iron in the set matches the specification you ordered.
