MIZUNO PRO S-1 IRONS

Legacy Reborn

The Mizuno Pro S-1 irons are pure muscle backs, designed for players who demand ultimate precision and workability. At the core of the Mizuno Pro S-1 is Mizuno’s Grain Flow Forged HD process, carefully executed in Hiroshima, Japan. Forged from a single billet of 1025E Pure Select Mild Carbon Steel, the S-1 delivers the unmistakably soft and responsive feel through impact that Mizuno is globally known for. The inclusion of a copper underlay further optimizes this experience, subtly refining vibration patterns to produce the purest, most satisfying feedback.

Channel Back Design

Provides more consistent CG location, even more solid feel, and greater vertical stability

The innovative Channel Back Design subtly repositions mass behind the face to achieve a more stable vertical center of gravity, resulting in consistent launch conditions. Simultaneously, it offers a firmer, tour-preferred sensation, enhancing responsiveness without sacrificing the purity of feel.

Tour-Tested and Confirmed Sole

Tour tested and confirmed sole: Improved turf interaction by reducing the camber height, a sharper leading edge, and increased bounce angle

The S-1 sole has been carefully refined through tour input, featuring a flatter camber profile, sharpened leading edge, and increased bounce angle. This design ensures smoother turf interaction—particularly beneficial for shallower swings—minimizing digging and allowing players to maintain aggressive angles of attack with confidence.

Harmonic Impact Technology (HIT)

Channel back provides an even more solid feel.

Mizuno’s proprietary Harmonic Impact Technology works in tandem with the channel back geometry to fine-tune vibration frequencies, delivering a slightly firmer—but still satisfyingly solid—impact sensation. It’s engineered for players who desire auditory and tactile feedback that inspires confidence with every strike.

Copper Underlay

Incremental softer impact feel combined with HIT, for the ultimate impact sensation

A thin layer of copper beneath the chrome plating, adds a layer of nuance to the feel at impact. This feature subtly softens vibration, enriching the feedback while maintaining a crisp response. Paired with H.I.T., it creates what Mizuno describes as the ultimate “sensory connection” between golfer and club.

Further Optimized Grain Flow Forged HD (High Density)

From a single billet of 1025E mild carbon steel in Hiroshima Japan for unmistakable Mizuno feel through impact.

The S-1 iron is masterfully Grain Flow Forged HD from a single billet of 1025E Pure Select Mild Carbon Steel in Hiroshima, Japan—a testament to Mizuno’s heritage in precision forging. This advanced forging process creates a tighter grain structure, delivering the brand’s legendary buttery-soft feel through impact, while enhancing feedback and consistency across the set.

Soft White Satin Finish

Nickel Chrome Satin Finish for sophisticated look with glare reduction

The irons are finished in a sophisticated Nickel Chrome Soft White Satin, offering a premium, tour-inspired aesthetic. Beyond its visual appeal, the satin treatment effectively reduces glare at address, promoting unwavering focus and visual clarity in all lighting conditions.

Gallery

COMP

SPECS

Are you looking for a different set makeup? Use our custom irons and add as many irons as you want in your set to your cart and check out. Then send an email to LeftiesOnly@comcast.net letting us know exactly which clubs and flex you want.

 Did you get fit and want the club made to your specs? Are you a man looking for a +1 or -1 length? Do you feel a bigger grip might be more comfortable? Are you a woman who wished this men’s irons came in Ladies? Do you want us to investigate a different shaft or grip option?

All while maintaining the manufactures warrantees!!!

We know you’re a lefty and aren't used to options, but you have rights too!!!! Don't settle!!! You deserve a product that fits you too. Please call 1800-LEFTIES or email us at leftiesonly@comcast.net and let us know what customization you would like, and we will let you know how we can make it happen.

Most customizations don't cost you extra. Don't settle!!! Call or email and let us help you create your perfect club.

Mizuno Pro S-1 Irons Specification

SHAFTS

KBS Tour Steel

Mitsubishi Chemical MMT 85 Graphite

Flex	Weight	Trajectory
S	88g	Mid
R	84g	Mid

 

Mitsubishi Chemical MMT 65 Graphite

Flex	Weight	Trajectory
R	65g	Mid

 

Flex	Weight	Trajectory
A	55g	Mid

 

UST Mamiya Recoil Dart ESX 440 F0 Graphite

Flex	Weight	Trajectory
440 F0-LL	48g	High

GRIP

Golf Pride Tour Velvet 360 - Mens