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Head to head

Mizuno JPX ONE vs ST-MAX 230 driver

Choose a used ST-MAX for a head built for stability above all, for the least money.

Choose the JPX ONE for a new driver with the newer face.

The JPX ONE followed the ST-MAX 230 when Mizuno replaced its ST230 drivers with two new heads. Both are 460cc heads, 45.75 inches long, with 4° of loft adjustment in the hosel. The ST-MAX was Mizuno's maximum forgiveness head, with 54 grams of weight at the back for stability; the JPX ONE is the larger, higher-MOI of Mizuno's two JPX ONE heads and adds a polymer layer to the face for ball speed across more of it. The ST-MAX scores 4 of 5 here and the JPX ONE 3, because Mizuno no longer names one head its most forgiving. The lofts are 9.5°, 10.5° and 12° against 9°, 10.5° and 12°, and each is left-handed in one loft only: 9.5° for the ST-MAX, 10.5° for the JPX ONE.

  1. Forgiveness 3.0 out of 5

    Mizuno JPX ONE

    $450 at Mizunochecked 2 Nov

    See it at Mizuno

    Used from $229.99 at 2nd Swing Golf12°, regular flex, average condition · checked 31 Oct

  2. Forgiveness 4.0 out of 5

    Mizuno ST-MAX 230

    No longer sold new

    See used at 2nd Swing Golf

    Used from $89.99 at 2nd Swing Golf10.5°, senior flex, poor condition · checked 31 Oct

Mizuno JPX ONE

9° loft; head volume 460 cc.

Mizuno ST-MAX 230

9.5° loft; head volume 460 cc.

Drawn to the same scale from each maker's loft, offset and sole: drawings, not photos. A dashed line marks a dimension the maker does not publish.
  1. Head side view, drawn from its loft

    Forgiveness 3.0 out of 5

    Mizuno JPX ONE

    Mizuno's standard 2026 driver, which it says fits almost all players: the larger, higher-MOI head of its two JPX ONE drivers, with a deeper centre of gravity for an easier launch, in 9°, 10.5° or 12°.

    $450 at Mizunochecked 2 Nov

    See it at Mizuno

    Used from $229.99 at 2nd Swing Golf12°, regular flex, average condition · checked 31 Oct

    Lofts
    9°, 10.5°, 12°
    Draw help
    None
    Hand
    Left or right
    Flex
    Regular to extra stiff

    Fits golfers who want a straighter flight and an easy launch from a standard-sized driver head.

    Need a senior flex? Cobra OPTM MAX-D, senior (A) flex in stock, 4.0 of 5.

  2. Head side view, drawn from its loft

    Forgiveness 4.0 out of 5

    Mizuno ST-MAX 230

    Mizuno's 2024 driver built for the most stability it could give a head: a wide, low 460cc shape with 54 grams of weight at the back, which Mizuno called its most stable driver ever, in 9.5°, 10.5° or 12°.

    No longer sold new

    See used at 2nd Swing Golf

    Used from $89.99 at 2nd Swing Golf10.5°, senior flex, poor condition · checked 31 Oct

    Lofts
    9.5°, 10.5°, 12°
    Draw help
    None
    Hand
    Left or right
    Flex
    Not published

    Fits a miss that goes anywhere on the face.

Side by side

Mizuno JPX ONE vs ST-MAX 230 driver
DetailJPX ONEST-MAX 230
Forgiveness score3.0 of 54.0 of 5
ClassGame improvementMaximum forgiveness
Stock lofts9° · 10.5° · 12°9.5° · 10.5° · 12°
Draw helpnono
FlexesR · S · X–
HandsRH · LHRH · LH

See every specification side by side, and add a third club if you like.