Driver · 2021
Mizuno ST-Z
The CaddyIndex™ breakdown: our rating across all six performance dimensions, researched from published expert reviews, online sentiment and our own weighting algorithm.
By the CaddyCompare editorial team · updated 29 May 2026
Performance index
Six researched ratings, lower (blue) through to elite (gold).
Where it wins
- Feel86
- Looks85
- Sound84
Watch
Rated highest for feel and looks; its softest dimension is workability.
You're a mid-handicapper, or anyone tired of missing both ways, who wants a forgiving, neutral, low-spinning driver with an outstanding solid feel.
You want to shape shots or need a draw bias to fight a slice - the ST-X is the more workable, draw-leaning option.
Pros
- The most consistent driver tested in 2021 - 1st at controlling spin difference and 2nd best at protecting ball speed
- Genuinely forgiving and neutral - a deep, low CG with high MOI to hit more fairways
- Incredibly solid, dense feel - the ST-Z's greatest strength
- Low, consistent spin (~2,020 rpm) and ~271 yards of carry from a shorter 45-inch shaft
Cons
- Neutral and stability-focused - not built to shape shots like the ST-X
- Limited adjustability and a slightly busier crown than its predecessor
By dimension
Forgiveness
StrongA real strength, and the better half of the 2021 pair - the most consistent driver tested in 2021, finishing 1st at controlling spin difference. The deep, low, neutral CG and high MOI make it a forgiving fit for a wide range of players who want to hit more fairways. Genuinely steady.
Distance
StrongStrong and efficient - 2nd best at protecting ball speed across the face, with ~271 yards of carry from a shorter 45-inch shaft and a consistent ~2,020 rpm spin. Low, repeatable spin and excellent retention add up to dependable distance.
Workability
ModestNeutral by design - the CG is positioned as close to the neutral axis as possible for stability and low spin, a straight-flight, fairway-finding head rather than a shaper. More stable but less workable than the forward-CG ST-X.
Feel
ExcellentThe standout - an incredibly solid, strong feel, the greatest strength of the ST-Z, built on Mizuno's more dense feedback, with a premium, connected impact. Among the best-feeling drivers of its year.
Sound
ExcellentPleasant and informative - a sound medium in pitch and fairly quiet, with misses easily differentiated from pure strikes but not harsh or unpleasant, a controlled, premium note. Feedback without the jarring quality of the ST-X.
Looks at address
ExcellentClean and neutral, if a touch busier - a slightly busier look than the ST200 predecessor, with a stark transition between the gloss-black crown and visible carbon, in a round, middle-of-the-road head not overly stretched. Among the better-looking heads of 2021.
Sources
Dig into the independent expert reviews and lab tests that feed into how every club here is rated. Each one is worth reading in full — they carry the launch-monitor data, hands-on testing and detailed photography that paint the complete picture before you buy.
- Read the full review at Mizuno ST-Z Driver Review - Plugged In Golf
- Read the full review at Mizuno ST-Z Driver Review - A Driver You Should Consider In 2021? - Golf Monthly
- Read the full review at Mizuno ST-Z and ST-X driver Review - Today's Golfer
- Read the full review at Mizuno ST-Z Driver Review: Exceptionally consistent - Golfmagic
- Read the full review at Mizuno ST-Z Driver: Full Review For 2021 - Fairway Approach
- Read the full review at Mizuno ST-Z Driver Review - Golf Club Guru
We paraphrase and synthesise these sources; we don't republish them. Publishers can read how we use reviews or request a change.
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Frequently asked questions
Who is the Mizuno ST-Z best for?
You're a mid-handicapper, or anyone tired of missing both ways, who wants a forgiving, neutral, low-spinning driver with an outstanding solid feel.
Who should avoid the Mizuno ST-Z?
You want to shape shots or need a draw bias to fight a slice - the ST-X is the more workable, draw-leaning option.
What handicap is the Mizuno ST-Z suitable for?
The Mizuno ST-Z scores strongest for high-handicap golfers, and also suits mid-handicap golfers.
What is the Mizuno ST-Z best at?
In our research the Mizuno ST-Z rates highest for feel and looks at address, and is softest on workability.
Does the Mizuno ST-Z have a shot bias?
The Mizuno ST-Z is broadly neutral in shot shape (no built-in draw or fade bias), with a mid launch and low spin.