Mizuno ST-Z Driver

Loft Options & Stock Shafts

Technology

Tour Driver

The ST-Z is Mizuno's low-spin driver for 2021, and the Z is the whole point. Mizuno parks the weight dead center at the back of the head instead of pushing it into a heel or toe bias. That gives you a straight, low-spinning launch without steering the ball one direction, which is exactly what a stronger player wants when they're already shaping shots on their own.

At 440cc, this head is smaller than the 460cc bombers most brands sell. It looks compact behind the ball, sits a touch more like a players' club, and rewards golfers who find the center of the face with regularity. You give up a little of the forgiveness that comes from a bigger footprint, but you get a cleaner, more penetrating flight in return.

Think of the ST-Z as the neutral, spin-killing option in Mizuno's driver family. If your miss isn't a consistent slice and you deliver real clubhead speed, this is the one that keeps your numbers tight. The adjustable hosel lets you dial loft and lie to fine-tune launch and start direction once you've got it in hand.

• Mid to low handicappers with enough clubhead speed to benefit from low spin rather than fight for extra carry.
• Players who want a neutral face angle and no built-in draw bias, since their miss isn't a repeatable slice.
• Anyone who prefers a compact 440cc address shape over the larger, more forgiving 460cc heads.
• Golfers who like tinkering, because the adjustable hosel opens up loft and lie tuning to chase optimal numbers.

Frequently Asked Questions

What's the difference between the Mizuno ST-Z and ST-X?

The ST-Z has a centered back weight for a neutral, low-spin, straight flight, while the ST-X moves weight toward the heel to help fight a slice and produce a draw. Pick the ST-Z if your miss isn't a consistent slice and you want to keep spin down without any built-in shot bias.

Is the ST-Z a low-spin driver?

Yes. Low spin is its main design goal. The balanced back weighting and 440cc head are built to reduce spin and give a more penetrating ball flight, which suits faster swingers who tend to spin the ball too much with higher-launch drivers.

Is the Mizuno ST-Z forgiving enough for a mid handicapper?

It's forgiving for a 440cc head, but it's not a max-forgiveness driver. Mid handicappers who find the center of the face fairly often will do well with it. If you miss all over the face, a larger 460cc model will treat you better on mishits.

Is the ST-Z adjustable?

Yes, it has an adjustable hosel so you can change loft and lie. That lets you tune launch, spin, and start direction to your swing without buying a different head, which is useful for chasing your best numbers on a launch monitor.

Why is the ST-Z only 440cc instead of 460cc?

The smaller 440cc size gives a more compact look at address and concentrates mass for a lower, more stable spin profile. It appeals to better players who prefer a tidier shape and don't need the extra stability that comes from a full 460cc footprint.