New Mizuno M-13 and 15 Series

Mizuno Pro M-13: The Scalpel

The M-13 is the direct successor to the widely acclaimed Pro 243. It is designed for the “ball-striker’s ball-striker”—the player who wants a compact, tour-preferred profile but needs a bit more “zip” in the long irons than a traditional blade provides.

The Tech Breakdown:

Three-Part Construction: The M-13 doesn’t treat every club the same.
- 4-5 Irons: Use a Pocket Cavity Grain Flow Forged construction (Chromoly 4120) to create a face that is 35% thinner than previous models. This translates to higher launch and serious ball speed where you need it most.
- 6-8 Irons: Feature a Micro-Slot design for controlled speed and higher COR.
- 9-GW: Pure, one-piece 1025E Grain Flow Forged steel for that legendary “buttery” precision on scoring shots.
Triple Cut Sole: A sharper leading edge and beveled trailing edge ensure the club glides through the turf rather than digging in.

Who it’s for: The low-handicapper (0-10) who prioritizes workability and a penetrating flight but wants a safety net in their long irons.

Mizuno Pro M-15: The Powerhouse

If the M-13 is a scalpel, the M-15 is a finely-tuned sports car. Replacing the popular Pro 245, this is a Hollow-Body Players Distance iron. It looks like a blade at address, but it performs like a distance machine.

The Tech Breakdown:

Integrated Progression: The M-15 features a hollow-body design from the 4-8 iron, utilizing Suspended Tungsten Weighting (over 50g) to drive the center of gravity low and deep. This makes the long irons incredibly easy to launch.
Contoured Ellipse Face: This is Mizuno’s most advanced CORTECH technology to date, optimizing ball speed across the entire face so your “mishits” still find the green.
Acoustic Engineering: One common complaint with hollow irons is a “clicky” sound. Mizuno solved this with Harmonic Impact Technology, paired with a copper underlay, to ensure it sounds like a solid forged iron.

Who it’s for: The mid-to-low handicapper (5-15) who wants a players-style look but needs an extra 8–10 yards of carry and maximum forgiveness on off-center strikes.