Mizuno ST-X Driver

Loft Options & Stock Shafts

Technology

Game Improvement Driver

The ST-X is Mizuno's answer for the golfer who keeps leaking the ball right. Where the ST-Z sits neutral and low-spin, the 2021 ST-X shifts weight toward the heel and tunes the head to launch higher, so the face wants to close through impact and the ball wants to climb. If your miss is a weak fade or a slice that costs you 20 yards, this is the ST head built with you in mind.

At 460cc it gives you the full USGA-legal footprint, which means a big, confidence-building profile at address and the forgiveness that comes with a deep, spread-out weight layout. Mizuno paired that with an adjustable hosel, so you can dial loft and lie to fine-tune trajectory and take even more of the fade out if you need to. It is not a low-spin bomber. It launches high and holds air, which is exactly the point for slower and moderate swing speeds that struggle to get the ball up and keep it there.

Here is the honest read. Mizuno's driver reputation has always lagged its irons, but the 2021 ST line closed a lot of that gap, and the ST-X is a legitimately good driver for its intended player. If you already draw the ball or you're a fast swinger chasing distance, look at the ST-Z instead. The ST-X does one job well, and it doesn't pretend to be a players' driver.

• You fight a slice or a weak fade and want a driver that helps square the face instead of one you have to fix mid-swing.
• Your swing speed is moderate or slower and you need more height and carry to hold the ball in the air.
• You like the idea of adjusting loft and lie to tune your flight rather than being locked into one setting.

Frequently Asked Questions

What's the difference between the Mizuno ST-X and ST-Z 2021?

The ST-Z is the neutral, lower-spin head aimed at faster swingers and players who already square the face. The ST-X moves weight to the heel and launches higher, so it fights a slice and helps get the ball up. Pick the ST-X if your miss goes right or you struggle with height, and the ST-Z if you want a flatter, more penetrating flight.

Is the ST-X 2021 a good driver for a slicer?

Yes, that's the golfer it was built for. The heel-biased weighting encourages the face to close through impact, and the adjustable hosel lets you add even more draw and higher loft if your slice is severe. It won't cure a bad swing path, but it takes the edge off a fade and keeps more shots in play.

How adjustable is the ST-X 2021?

It has an adjustable hosel that changes loft and lie, so you can raise or lower your launch and shift the face angle to tune how much draw bias you get. That covers a useful range for one head. It does not have movable sole weights like some higher-end drivers, so the ball-flight tuning happens at the hosel.

What swing speed is the ST-X 2021 best for?

It suits moderate and slower swing speeds best, roughly the players who don't naturally launch the ball high or generate a lot of spin. The high-launch design gives those golfers the carry they're missing. Faster swingers who already flight the ball well will usually spin the ST-X too much and should look at the ST-Z.

Is the ST-X 2021 forgiving on mis-hits?

For a driver in this category, it holds up well. The 460cc head and carbon-crown weight layout spread mass low and toward the perimeter, so heel and toe strikes lose less ball speed and stay straighter. It's a genuine game-improvement driver, not a compact players' head, and it plays like one.

Alternatives to the Mizuno ST-X

Other game improvement driver models from different brands, closest to its model year.