What's new? How much does it cost? And how does it perform? Hannah Holden brings you the low down on the new Mizuno ST-230 range

Mizuno are back for 2023 with the replacement to their ST-Z 220 range. The new ST-230 line includes three drivers, a fairway wood and a hybrid.

Mizuno ST-230: Driver Technology

The biggest tech change is the introduction of a new Cortech chamber. This is a stainless steel weight with elastomeric TPU that sits in the golf club’s sole.

The addition of a cortech chamber helps performance in a variety of ways. Firstly, it allows the sole to flex, creating an additional source of energy behind the club face.

cortech chamber

The TPU material also provides sound tuning and vibration dampening to help create a more solid feel at impact. The central stainless steel weight also helps reduce spin.

There are three Mizuno 2023 drivers, the Mizuno ST-Z, ST-X and ST-X PLTNM. Let’s take a look at the differences.

Mizuno ST-Z 230 Driver

This is the lowest-spinning model in the Mizuno ST-230 series. It is designed to have a neutral and stable ball flight.

mizuno St-z 230 driver

“Tour tests for the ST-Z 230 have all been very consistent,” says Chris Voshall, Mizuno’s Director of Product. “Firstly, an appreciation that the look is familiar at address, then satisfaction at how much better it feels off the face. Ball speeds are up on average 1-3mph with spin rates dropping around 200 rpm.”

Mizuno ST-X 230 driver

The ST-X 230 has a deeper profile with more weight in the heel, making it spin more and create a draw-biased ball flight.

mizuno st-x driver

“The new ST-X 230 is a complex character,” says Chris Voshall. “Although in the higher loft option it’s a higher flying draw biased option, the 9.5 for many of our tour players was more workable and faster from the face. You really need to hit both models before making any judgements on which is likely to work best for you.”

Mizuno ST-X PLTNM 230 Driver

The platinum 230 driver is an ultra-lightweight model designed specifically for players with slower club head speeds. It is 30 grams lighter overall than any possible custom option of the ST-X 230.

The club head is weighted more towards the heel to make this a more draw bias offering.

ST-X PLTNM 230 Driver

ST-Z 230 Fairway Wood

The ST-Z 230 fairway features lots of adjustability so it can be set up for varying levels of players.

Fast ball speeds are created through the use of a steel face and Mizuno’s Cortech chamber.

The carbon composite crown helps lower the centre of gravity, while the front-to-back weighting helps deliver consistent launch characteristics.

Fairway Wood

ST-Z 230 Hybrid

Numerous of Mizuno’s tour players influenced this hybrid’s design. Mizuno wanted to create something that suited the eye of better players but was playable for golfers of all levels.

Combining a steel face and Mizuno’s Cortech chamber helps provide fast ball speeds.

The waffle crown and thick sole weight help to lower the centre of gravity and sweet spot for high launch and efficient spin.


The Details

Available: February

RRP: £499 (Drivers) £299 (Fairway Woods) £279 (Hybrid)

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Hannah Holden

Equipment and Instruction Editor

Hannah Holden is the Equipment and Instruction Editor here at National Club Golfer. If you’re looking to improve your game, by changing your golf swing or upgrading your golf equipment she’ll have the answers. As well as writing lots of features and reviews you can find her on our YouTube channel giving you insights on the latest rules, clubs and tips to improve your golf game. Hannah is a member at both Huddersfield and Alwoodley golf clubs. You will either find her here or driving up and down the country playing in a variety of elite amateur events.

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