Mizuno Pro S-4 Irons

The Mizuno Pro S-4 brings together the refined feel of a traditional forged player's iron with added forgiveness, stability, and launch. Designed for accomplished golfers who want a compact, confidence-inspiring profile, the S-4 uses a redesigned curved muscle, progressive offset, wider sole, and deeper center of gravity to make the entire set more playable without sacrificing the precision and feedback expected from Mizuno Pro.

Each iron is Grain Flow Forged HD from a single billet of 1025E Mild Carbon Steel in Hiroshima, Japan. A copper underlay and Harmonic Impact Technology further enhance the soft, responsive impact sensation, while the Triple Cut Sole promotes smooth turf interaction through impact.

Key Features

• Redesigned Curved Muscle: Positions more mass lower in the head to increase stability, forgiveness, and launch while maintaining the classic Mizuno Pro appearance.
• Grain Flow Forged HD: One-piece forging from 1025E Mild Carbon Steel delivers the soft feel, precise feedback, and workability associated with Mizuno forged irons.
• Progressive Head Geometry: Progressive offset, sole width, and center-of-gravity positioning provide easier launch and added forgiveness while preserving a compact player's profile.
• Triple Cut Sole: Beveled leading and trailing edges improve turf interaction for a smoother entry and exit through the strike.
• Harmonic Impact Technology: Carefully tuned head geometry produces a solid, refined impact sensation and consistent feedback.
• Copper Underlay: A thin copper layer beneath the nickel chrome finish enhances the soft, responsive feel at impact.
• Player's Cavity Profile: The S-4 is Mizuno's most forgiving model in the Signature Series while retaining the compact shaping preferred by better players.

Forgiveness Without Losing the Mizuno Feel

The S-4 is designed for golfers who want more confidence than a traditional muscleback or compact cavity can provide. By moving mass lower and incorporating a deeper center of gravity, the S-4 promotes a higher launch and greater stability on off-center strikes while maintaining the control and workability expected from a player's iron.

Premium Forged Construction

Grain Flow Forged HD construction begins with a single billet of 1025E Mild Carbon Steel and is produced in Hiroshima, Japan. The result is a one-piece forged head with the soft, connected feel and precise feedback that define the Mizuno Pro family.

Triple Cut Sole

The Triple Cut Sole uses carefully shaped leading and trailing edges to improve how the club enters and exits the turf. The design helps the wider sole move smoothly through impact while maintaining the clean appearance and playability of a better-player iron.

Set Makeup

4-PW: 4 Iron, 5 Iron, 6 Iron, 7 Iron, 8 Iron, 9 Iron, Pitching Wedge

Mizuno Pro S-4 Specifications

Shaft Options

• Aerotech Steelfiber i110: Stiff, 110g, Mid-High trajectory
• Aerotech Steelfiber i95: Regular or Stiff, 95g, Mid-High trajectory
• Aerotech Steelfiber i70: Amateur, 70g, Mid-High trajectory
• KBS $-Taper Chrome: Stiff 120g or X-Stiff 130g, Mid trajectory
• KBS C-Taper Lite: Regular 105g, Stiff 110g, or X-Stiff 115g, Mid-High trajectory

Why Play the Mizuno Pro S-4?

• Forged feel with increased forgiveness
• Higher launch and improved stability
• Compact player's cavity profile
• Progressive offset and head geometry
• One-piece Grain Flow Forged HD construction
• 1025E Mild Carbon Steel
• Copper Underlay for enhanced feel
• Triple Cut Sole for improved turf interaction
• Designed for accomplished golfers seeking more confidence without moving into a larger game-improvement iron

Classic Mizuno forging. More confidence. More forgiveness.