When craftsmanship meets innovation, you get the Mizuno Pro S-1 Irons -- a modern muscle-back designed for elite players who demand precision, feel, and honesty from their irons. Combining the purest forging traditions with subtle but powerful performance refinements, the S-1 is a blade that rewards quality ball striking with unrivalled feedback and ultimate shot-shaping control. This model embodies Mizuno's heritage while pushing blade technology forward for the next generation of golfers.
The Mizuno Pro S-1 Irons are forged through Mizuno's exclusive Grain Flow Forged HD process in Hiroshima, Japan, using 1025E Pure Select Carbon Steel. This ensures the buttery-soft feel Mizuno is world-renowned for. Each iron is built with surgical precision, refined through decades of feedback from professional players and master craftsmen.
The Channel Back Design repositions mass behind the hitting area to optimise the vertical centre of gravity. This innovation ensures consistent launch conditions and enhances stability through impact. While still maintaining the traditional muscle-back look, the Channel Back introduces a more responsive, tour-style feel without sacrificing the iconic Mizuno forged sensation.
Shaped directly from tour player feedback, the S-1 sole design features a flatter camber, sharper leading edge and an added bounce angle. This tour-refined geometry provides smooth turf interaction and reduces digging, especially for players with shallower attack angles. The design allows golfers to play with confidence on tighter lies and through firmer conditions, while retaining the ability to deliver aggressive angles of attack.
The Mizuno Pro S-1 Irons look as good as they feel. Featuring a compact, minimalist blade profile with a square toe, thin topline and reduced offset, the irons give skilled players the confidence to shape shots at will. The premium soft white satin finish not only adds a touch of class but also reduces glare, ensuring consistent focus throughout the round.
Every detail of the Mizuno Pro S-1 has been created for golfers who demand elite precision. The compact design blends perfectly with Mizuno's other Pro models for combo sets, allowing players to mix and match for optimal gapping. With tour-inspired shaping and progressive sole refinement, the S-1 is best suited for single-digit and scratch golfers who prioritise control, feel, and shot-making artistry.
The Pro S-1 stands apart as a blade that offers not just traditional workability but enhanced stability and consistency through new technologies. For ball strikers who appreciate purity at impact, yet seek subtle help in maintaining consistent launch and trajectory, the S-1 bridges heritage design with modern tour demands. Whether you're shaping fades, flighting knockdowns, or attacking pins, the S-1 offers unmatched trust from address to follow-through.
| Shaft | Trajectory | Flex | Weight |
|---|---|---|---|
| FST KBS Tour | Mid | Stiff | 120g (Stiff) |
| Model | Size | Core | Weight |
|---|---|---|---|
| Golf Pride Tour Velvet 60R | Standard | .580" | 60g |
The Mizuno Pro S-1 Irons are now available to pre-order until 11th September 2025, giving golfers the first opportunity to secure one of Mizuno's most anticipated launches of the year. At Golf Gear Direct, we are proud to offer the full Mizuno Pro line-up with no up-charges on custom shafts or grips, ensuring you can dial in your set to match your exact preferences without additional costs.
For golfers looking to achieve the perfect set-up, we will be hosting a special Mizuno Takeover Day on 5th September. This exclusive fitting event provides the chance to be fitted for the Pro S-1 Irons using Mizuno's latest swing DNA technology and fitting equipment. Whether you're dialling in loft, lie, shaft, or grip, our expert team will help you maximise performance from the very first strike.
To suit a wide range of players, the Mizuno Pro S-1 Irons can also be combined with the Mizuno Pro S-3 Irons to create a seamless combo set. This offers players the chance to blend the ultimate precision of the S-1 in the short irons with the extra forgiveness and playability of the S-3 in the longer irons. It's the ideal solution for golfers who want to build a set that balances shot-making artistry with forgiveness and distance control.
With pre-orders open now and fitting opportunities available on our Mizuno Takeover Day, there's no better time to secure your Mizuno Pro S-1 Irons. Whether you're a traditionalist seeking the purest blade in golf or a modern player looking to blend them with the S-3, this is a set that delivers timeless feel and modern performance.
Shop online at Golf Gear Direct today to reserve your set ahead of launch and experience the next evolution in Mizuno's legendary forged irons.
