Custom Mizuno Pro S-4 Irons

Redesigned Curved Muscle

A refined curved-muscle design concentrates mass lower in the head to promote higher launch, increased stability, and greater forgiveness while maintaining the clean, compact profile expected from Mizuno Pro.

Grain Flow Forged HD

Each iron is forged in Hiroshima, Japan, from a single billet of 1025E Mild Carbon Steel using Mizuno’s patented Grain Flow Forged HD process for exceptionally soft feel and precise impact feedback.

Progressive Head Geometry

Progressive offset, wider soles, and deeper center-of-gravity positioning create a more confidence-inspiring setup and easier launch throughout the set. These refinements add forgiveness while preserving the precision and shot-making control accomplished players demand.

Triple Cut Sole

Beveled leading and trailing edges promote smoother entry and exit through the turf, supporting clean contact and consistent speed through impact.

Copper Underlay

A copper layer beneath the face further softens impact feedback, enhancing the responsive sensation associated with Mizuno Pro forged irons.

Harmonic Impact Technology

Harmonic Impact Technology precisely tunes the head’s vibration patterns to create a solid, refined sound and feel at impact.

Who It's For

• Skill Level: Advanced; Mid- to Low-Handicap
• Swing Speed: Moderate to Fast
• Helps With: Producing easier launch, improving stability and turf interaction, and adding forgiveness without sacrificing feedback or shot control
• Performance Profile: Forged players iron with a compact profile, higher launch, responsive feel, and enhanced forgiveness