Description
The Mizuno Pro S-4 Irons (Steel Shaft) have been engineered for accomplished golfers seeking the unmistakable feel of a forged iron with greater forgiveness and confidence throughout the set.
A redesigned curved muscle concentrates mass lower in the head, while progressive offset, a wider sole and deeper centre of gravity promote higher launch, increased stability and improved forgiveness without compromising the precision expected from Mizuno Pro.
Forged from a single billet of 1025E mild carbon steel using Mizuno’s patented Grain Flow Forged HD process, the S-4 delivers the exceptional feel, feedback and workability synonymous with Mizuno’s forged heritage.

Features & Benefits:
- REDESIGNED CURVED MUSCLE
Concentrates mass lower in the head to deliver increased forgiveness, higher launch and greater stability while maintaining the classic Mizuno Pro profile. - GRAIN FLOW FORGED HD
Forged from a single billet of 1025E mild carbon steel in Hiroshima, Japan, for the unmistakable soft feel and precise feedback only Mizuno can deliver. - PROGRESSIVE HEAD GEOMETRY
Increased offset, a wider sole and a deeper centre of gravity inspire confidence at address while promoting an easier launch and greater forgiveness. - TRIPLE CUT SOLE
Bevelled leading and trailing edges improve turf interaction for smoother entry and exit through impact. - COPPER UNDERLAY
Further enhances the soft, responsive feel that has become synonymous with Mizuno Pro forged irons. - HARMONIC IMPACT TECHNOLOGY (HIT)
Precisely tuned vibration characteristics create the solid, refined impact sensation expected from Mizuno’s premium forged irons.
Specifications:
| Club | Loft | Lie | Length | Bounce |
|---|---|---|---|---|
| 3 | 21° | 60° | 39.25” | 3° |
| 4 | 24° | 60.5° | 38.75” | 3° |
| 5 | 27° | 61° | 38.25” | 4° |
| 6 | 30° | 61.5° | 37.75” | 5° |
| 7 | 34° | 62° | 37.25” | 6° |
| 8 | 38° | 62.5° | 36.75” | 7° |
| 9 | 42° | 63° | 36.25” | 8° |
| PW | 46° | 63.5° | 35.75” | 9° |








