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Mizuno Pro S1 Steel Golf Irons
Mizuno Pro S1 Steel Golf Irons
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Product Reviews & Buying Guides
Mizuno Pro Irons - Which Should I Choose?
Mizuno Pro Irons - Which Should I Choose?
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60 Day Play Better Promise
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Graphite or Steel Shafts - Which should I choose?
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Bladed or Cavity Back irons? Which one should you use?
Why Shop With Us?

Mizuno Pro S1 Steel Golf Irons - 7 Clubs

Pure Muscle Back Design | Authorised Mizuno Retailer

£1499.00
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We're passionate about offering you the best value. That's why we compare our prices with competitors every day. If you find a lower price elsewhere, even after buying from us, let us know, and we'll refund the difference. Simple, honest, and hassle-free. T&C's Apply

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Standard Options
Select Hand
Select Shaft Flex
Select Set Options
Custom Fit Options

Custom Fit lead time - Up to 2 Weeks

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          Mizuno Pro S1 Steel Golf Irons

          • Authorised Retailer
          • Free UK Delivery*
          • Full Manufacturer Warranty

          The new Mizuno Pro S-1 Irons join the acclaimed Signature Series as a pure muscle back, forged for ultimate precision, workability and feel. Built in Hiroshima, Japan, through Mizuno’s renowned Grain Flow Forged HD process, each iron is crafted from a single billet of 1025E Pure Select Mild Carbon Steel with a copper underlay for the purest, most responsive feel at impact.

          Part of the Signature Series, the S-1 complements the Mizuno Pro S-3 Irons, giving golfers two distinct choices within one elite family. While the S-3 offers forgiveness in a compact profile, the S-1 is purpose-built for players who demand precision and shotmaking control.

          Key Features & Benefits

          • Grain Flow Forged HD - Forged in Hiroshima, Japan, from a single billet of 1025E Pure Select Mild Carbon Steel for unmatched precision and feel.
          • Copper Underlay - Fine-tunes vibration for the soft, responsive feedback Mizuno irons are famous for.
          • Channel Back Design - Redistributes mass to produce a more consistent centre of gravity and improved vertical stability.
          • Harmonic Impact Technology - Refined sound and feel through advanced vibration frequency tuning.
          • Re-Engineered Sole Profile - Flatter camber, sharper leading edge, and an extra degree of bounce enhance turf interaction, particularly for shallower attack angles.
          • Tour-Preferred Profile - Compact head with a square toe, thin topline and straight edges that suit the eye of elite players.
          • Soft White Satin Finish - A premium nickel chrome finish designed to reduce glare at address and maintain a timeless look.

          At the Golf Shop Online, we offer a range of custom options and our 60-Day Play Better Promise so you can buy with confidence, and if you’re not completely satisfied, we can take your new clubs back! If you have any queries about the Mizuno iron range or its custom options, please don't hesitate to contact us and a member of the team would be happy to help.

          Why buy from us?

          Spec

          • Standard shaft: KBS Tour (S)
          • Standard Grip: Golf Pride Tour Velvet 60

          Standard Options

          4-Iron

          • Standard Loft: 24°
          • Standard Lie: 60.5°
          • Standard Length: 38.75"

          5-Iron

          • Standard Loft: 27°
          • Standard Lie: 61.0°
          • Standard Length: 38.25"

          6-Iron

          • Standard Loft: 30°
          • Standard Lie: 61.5°
          • Standard Length: 37.75"

          7-Iron

          • Standard Loft: 34°
          • Standard Lie: 62.0°
          • Standard Length: 37.25"

          8-Iron

          • Standard Loft: 38°
          • Standard Lie: 62.5°
          • Standard Length: 36.75"

          9-Iron

          • Standard Loft: 42°
          • Standard Lie: 63.0°
          • Standard Length: 36.25"

          Pitching Wedge

          • Standard Loft: 46°
          • Standard Lie: 63.5°
          • Standard Length: 35.75"

          About Us

          Welcome to The Golf Shop Online. Since 2002, we’ve been helping golfers of all levels find the right equipment at the right price, with the service and support you’d expect from a trusted specialist.

          We started with a small pro shop and quickly realised that space limited what we could offer our customers. Moving online allowed us to showcase a much wider range of golf products from the game’s leading brands, all backed by professional advice and reliable service.

          Today, The Golf Shop Online is a well-established and respected retailer with thousands of happy customers. We are proud to be authorised by every brand we stock, which means every product you buy is 100% genuine and comes with the full manufacturer’s warranty.

          Customer trust is central to what we do. We are rated “Excellent” on Trustpilot and Reviews.io, and we continue to focus on giving you the best possible experience — from competitive pricing and expert support to fast delivery and an easy 60-day returns policy. Our Price Promise gives you extra confidence that you are always getting genuine value.

          Behind the website is a friendly, knowledgeable team led by PGA professional Mark Crossfield, who has over 330 million YouTube views sharing trusted golf advice. Whether you need help choosing the right driver, advice on custom fitting, or simply can’t find the product you’re looking for, we’re only a phone call or email away.

          Thank you for shopping with The Golf Shop Online. We look forward to helping you enjoy your game with the right equipment and service every step of the way.


          60 Day Play Better Golf Promise

          We believe you’ll get on well with your new irons, but if you don’t, our 60-Day Play Better Promise gives you extra peace of mind. If you’re not happy, you can return it for an exchange. This can be exchanged for another set of irons or applied as a shop credit, valid for six months.

          To return your golf irons, please send them back with a cover note that includes your GSO order number and a brief explanation of why they weren’t right for you. The cost of return postage is your responsibility. We recommend using a tracked, signed-for service for protection, as The Golf Shop Online cannot be held responsible for returns not received.

          Terms & Conditions

          • The 60 days start from the date of delivery.
          • Available only on products showing the "Play Better Golf Promise" logo.
          • Fair usage applies. Returns showing damage, dents, scrapes, or sky marks will be rejected. The headcover must be unused, the shafts must be undamaged, and the adjustment tool (if supplied) must be returned.
          • Applies to both standard and custom fit clubs. Bespoke non-listed clubs are excluded.
          • Customers may only use this promotion once.
          • You must email sales@thegolfshoponline.co.uk for authorisation before returning.
          • The cost of returning the product is the customer’s responsibility, and we recommend insurance for the return.

          Delivery & Returns

          Truck

          Super Saver Delivery (UK Mainland, excluding Scottish Highlands)

          Free UK mainland delivery on all orders over £30. Thousands of products ready for immediate dispatch.

          FREE / £2.99

          Fast Truck

          Next Day Delivery Options (Selected Postcodes)

          *Place your order before 3pm Monday to Friday and upgrade your delivery to next working day.

          £4.99

          Play Better Promise

          60 Day Play Better Promise (Available on selected hardware)

          We offer a whopping 60 Day Play Better Promise on selected golf clubs.

          More Info

          Returns

          60 Day No Quibble Returns Shop with Confidence

          Have total peace of mind with our 60 Day Money Back returns policy.

          More Info

          Read more about our delivery and returns.

          Reviews of

          eg. Ping, Callaway
          eg. G400, G400 Max, If unknown, please send an detailed image to pro@thegolfshoponline.co.uk
          For clubs, select Mens or Ladies. For anything else, select N/A
          For clubs, select Left Handed or Right Handed. For anything else, select N/A
          For GPS or Rangefinders' please use the same condition prompts
          For clubs, select Yes or No. For anything else select N/A
          For GPS & Rangefinders, select Yes or No. For anything else select N/A
          How many clubs/items are you looking to trade in? For Iron Sets, please enter the number of irons in the set.
          Please let us know the specification of the clubs - eg. Dexterity, Composition, Flex. For devices, leave this blank.
          Please give as much information as possible [Loft/Shaft/Shaft Length/Flex/Grip/Grip Thickness/Lie/Length] - You can purchase anything, it does not need to match what you are trading in!
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