Are Mizuno golf balls any good?

Yes. Mizuno is best known for forged irons, but its urethane Pro balls compete with premium tour balls at a lower price. The Pro S and Pro X carry tour-grade construction — a soft urethane cover, a multi-layer build, and compression that maps onto the Pro V1 range — at $50 a dozen. The ionomer RB Max and RB 566 are distance and value balls, built for durability and carry instead of greenside bite.

Which Mizuno golf ball should you use?

Match the ball to your driver swing speed. Above 105 mph, the firm Pro X suits players who want a high window and a steep landing angle; the 2026 robot test measured its apex more than five feet above the field median. Around 90 to 105 mph, the soft Pro S is the tour-ball all-rounder and the ionomer RB Max is the value alternative. Under 95 mph, the low-compression RB 566 compresses more easily and launches higher. If greenside spin is your scoring edge, stay in the urethane Pro line, where the Pro X spun more than the Pro S on the 35-yard pitch and the full wedge in that test.

Did the Mizuno Pro S and Pro X replace the RB Tour and RB Tour X?

Yes. Mizuno introduced the Pro S and Pro X as its flagship tour balls for the 2025 season, and they took over the slot the RB Tour and RB Tour X had held. The softer Pro S maps to the old RB Tour, and the firmer Pro X maps to the old RB Tour X. Mizuno has since retired the RB Tour pair; its current US lineup is the Pro X, Pro S, RB Max, and RB 566.

What is the difference between the Mizuno Pro S and Pro X?

Both are urethane tour balls that fit different swings. The Pro S is the softer ball at around 96 compression, built for a softer feel and lower driver spin at roughly 90 to 105 mph driver speed. The Pro X is firmer at around 102 compression, aimed at 105-plus mph players who want maximum ball speed and a high, steep-landing flight. In one launch-monitor test at 108 mph, the Pro S spun over 300 rpm less off the driver than the Pro X, matching Mizuno's design intent. In the 2026 robot test the Pro X also spun more on the 35-yard pitch (20th of 48 against 34th) and on the full wedge (9th against 32nd).

Where are Mizuno golf balls made?

Mizuno golf balls are made outside Japan, even though the brand's irons are famously forged there. Mizuno does not own a golf-ball factory. Its prior RB Tour balls were built in Vietnam by the contract manufacturer Feng Tay, according to 2024 industry reporting; the factory for the current Pro balls hasn't been published. Mizuno designs the core, mantle, and cover, then has a specialist factory build them.

Are Mizuno golf balls as good as a Titleist Pro V1?

Close enough that the choice comes down to feel and price. The Pro S and Pro X share the urethane cover, multi-layer construction, and compression range of the Pro V1 and Pro V1x, and Golf Monthly's review rated the Pro S excellent value among premium balls. The Pro V1 holds an edge in proven, in-house quality control and tour usage. For most golfers, the gap is smaller than the price difference, and feel preference should break the tie.

Are Mizuno golf balls cheaper than Titleist?

Yes. The flagship Mizuno Pro X and Pro S carry an MSRP of $50 per dozen, roughly $8 under the $57.99 of a Titleist Pro V1 or Pro V1x. On the value side, the ionomer RB Max is $30 and the RB 566 is $22, well below anything in the Titleist urethane line.

Is the Mizuno RB 566 discontinued?

No. The RB 566 is still listed on Mizuno's official US golf ball lineup page and remains in stock on Mizuno's own store at $22 per dozen, verified October 2026. The product URL carries a 2024 model tag, so the ball has been in the range for a while without a refresh, but it has not been withdrawn. Mizuno's current US ball lineup is the Pro X, Pro S, RB Max and RB 566.

Which Mizuno golf ball is best for a slow swing speed?

The RB 566 is the intended answer at roughly 60 compression and $22, and it is the sensible starting point under about 90 mph. One robot finding complicates it: at the 2026 robot test's 86 mph driver condition the firm urethane Pro S finished third for total distance, behind only the Pro V1 and Tour Soft. Firm balls are not automatically wrong for slower swings, so if you want a urethane cover at that speed, the Pro S deserves a test.

Mizuno Golf Balls: The Complete Lineup and Buyer's Guide (2026)

Quick answer

Mizuno makes four golf balls, and the right one tracks your swing speed and budget. The Pro S and Pro X are the 2025 tour balls that replaced the discontinued RB Tour and RB Tour X. Fast swingers (105+ mph) want the firm Pro X; most golfers fit the softer, lower-spinning Pro S or the value RB Max. Slower swings belong on the low-compression RB 566. The urethane Pro balls run about $8 under a Titleist Pro V1.

Mizuno golf ball lineup at a glance

Model	Cover	Compression	Spin	Best for	MSRP/dozen
Mizuno Pro X	Urethane	~102 (firm)	High	105+ mph, distance	$50
Mizuno Pro S	Urethane	~96 (high)	Mid	90–105 mph, softer feel, lower driver spin	$50
Mizuno RB Max	Ionomer	~80 (mid)	Low	90–105 mph, distance value	$30
Mizuno RB 566	Ionomer	~60 (low)	Low	Under 95 mph, soft value	$22

Compression and spin tiers come from BallCaddie’s ball catalog. The two urethane balls (Pro X, Pro S) are the greenside-spin options, and the Pro X is the stronger of the two: in the 2026 robot test it ranked 20th of 48 for spin on the 35-yard pitch and 9th on the full wedge, against 34th and 32nd for the Pro S. The ionomer RB Max and RB 566 trade that bite for cover durability and a lower price.

What Mizuno golf balls actually are

Mizuno built its name on forged irons, and the golf balls run on a different model than the clubs. The irons are made in Japan under the brand’s own roof; the balls are not. MyGolfSpy’s manufacturing reporting has the prior RB Tour balls built in Vietnam by Feng Tay, a contract manufacturer; Mizuno doesn’t run a ball plant of its own. Mizuno designs the core, mantle, cover, and dimple pattern, then has a specialist build them.

That arrangement is normal for a company that leads with clubs, and the output holds up. When MyGolfSpy’s Ball Lab tore down Mizuno’s prior-generation RB Tour X in 2023, it scored the ball 84 against a 73 average at the time (both on the lab’s pre-2026 scale), with a True Price 3% over retail. The 2025 Pro balls haven’t been through the lab yet. On aerodynamics, Mizuno says the AXIALFLOW dimple pattern on the Pro balls and RB Max cuts drag for a more stable flight in wind.

How to pick a Mizuno ball by swing speed

Swing speed is a useful first filter because it shapes how much launch and spin you need. (It doesn’t set a minimum compression: in 2026 robot testing, firm balls were the fastest off the driver at every speed.) TrackMan’s amateur data puts the average male golfer’s driver speed at 94 mph and a 15-handicap woman’s at 79 mph, which lands most golfers in the soft-to-mid Mizuno range rather than the firm tour end.

Under 95 mph: the low-compression Mizuno RB 566 (~60) compresses easily and holds launch.
90–105 mph: the soft Mizuno Pro S (~96) is the urethane all-rounder, and the ionomer Mizuno RB Max (~80) is the value pick for the same swings.
105+ mph: the firm Mizuno Pro X (~102) keeps ball speed up and flies high, peaking above 91 feet in the 2026 robot test.

Don’t know your number? The swing-speed fitting framework covers how to measure it and what compression does and doesn’t change at your speed.

The tour balls: Pro S and Pro X

Mizuno swapped its tour balls in 2025. The Pro S and Pro X launched as the flagship urethane balls and took over the slot the RB Tour and RB Tour X had held in the US since 2019. The names map one to one: the soft Pro S stands in for the RB Tour, the firm Pro X stands in for the RB Tour X. Mizuno has since retired the RB Tour pair, so the two Pro balls are the brand’s current urethane tour offering.

Mizuno Pro S — the soft tour ball

The Pro S is the softer of the two flagships, a 3-piece urethane ball around 96 compression built for feel. Mizuno gives it a 332-dimple AXIALFLOW pattern and a cover it markets as 12% thinner. In Golf Monthly’s launch-monitor test, the Pro S spun about 600 rpm less than the Pro X on a 50-yard pitch, and the reviewer still judged the short-game control ample. The 2026 robot test put the two in the same order: the Pro X spun more on the 35-yard pitch (20th of 48 against 34th) and on the full wedge (9th against 32nd), and the pair sat close together on a wet full wedge (Pro S 32nd, Pro X 35th). Long-game spin is mid-field. The 2026 robot test’s own label for the Pro S is a low-spin pick at high swing speed, but its measured driver spin ranked 26th-lowest of 48 at 116 mph, which matches the catalog’s mid-spin listing. It fits the 90–105 mph band and the player who wants a softer feel and less driver spin than the Pro X gives; the robot-test section below has the full breakdown.

Mizuno Pro X — the fast tour ball

The Pro X is the firmer flagship, a urethane ball around 102 compression aimed at 105-plus mph players who want maximum ball speed. Firm balls were the fastest off the driver in the 2026 robot test, and the Pro X ranked seventh of 48 for ball speed at 102 mph. In the same 108 mph launch-monitor test, the Pro S spun over 300 rpm less off the driver than the Pro X and flew lower, which makes the soft Pro S the lower-driver-spin option of the pair. The 2026 robot test went further, placing the Pro X among the highest-spinning balls off the driver at mid swing speed and naming it a high-spin top pick there. At $50 a dozen the Pro X sits about $8 under a Titleist Pro V1x (~102).

The value balls: RB Max and RB 566

Below the urethane tour balls, Mizuno runs two ionomer-covered balls built for distance and durability at a lower price. They give up tour-level greenside bite for a tougher cover. The urethane vs ionomer breakdown explains exactly what that cover swap costs you around the green.

Mizuno RB Max — distance with a durable cover

The RB Max is the bridge ball, a 3-piece ionomer design around 80 compression that Mizuno pitches as tour-like speed and launch with a more durable cover. It uses a dual butadiene-rubber core (soft inner, firmer outer) and a 336-dimple AXIALFLOW pattern for a penetrating, high-launching flight. At $30 a dozen it’s the value pick for the 90–105 mph player who wants carry and toughness over wedge spin.

Mizuno RB 566 — soft, high launch, value

The RB 566 (~60) is the soft, low-compression ball for swings under 95 mph. It carries the distinctive 566 micro-dimple pattern, which packs small dimples inside larger ones to hold hang time past the apex. A simple 2-piece ball at $22, it’s the cheapest Mizuno on the board and keeps a softer feel in the cold than the firmer Mizunos do, so it doubles as a shoulder-season option for slower swings.

Mizuno’s R&D director David Llewellyn said at the 2023 launch: “With a softer ball, feel is a priority and aerodynamics become the key to maintaining distance. We’ve found that at lower swing speeds, the higher, straighter flight and impact of the smaller dimples outweigh any minor loss of ball speed of a harder ball.” He concedes some ball speed and bets the flight wins it back. The RB 566 is still on sale. It remains on Mizuno’s official US lineup page and in stock on Mizuno’s store at $22, checked October 2026, though its product URL still carries a 2024 model tag.

What the 2026 robot test measured

Only two of Mizuno’s four balls have independent robot data. The Pro S and Pro X were in the 2026 48-ball robot test, which ran three driver conditions at 116, 102 and 86 mph and three iron conditions at 90, 80 and 65 mph. The RB Max and RB 566 were not in the field, and no independent gauge reading or launch-monitor dataset has been published for either, so their case rests on Mizuno’s own design logic. Cheaper balls did make the field, including the $15 Amazon Basics Core Soft (~55) and the Callaway Supersoft (~49).

Pro X. Within the mid swing speed group it ranked seventh of 48 for driver ball speed and 47th of 48 for 7-iron ball speed. Less than 1.5 mph covered that entire 48-ball iron field, with 18 balls in a statistical tie at the top, and the testers called 7-iron speed gaps marginal. Driver spin separates the Pro X far more. The robot put the Pro X among the highest-spinning balls off the driver at mid speed, alongside the Srixon Z-Star Diamond (~93) and Callaway Chrome Tour X (~99). That’s a step above the Medium driver spin on Mizuno’s own comparison chart. A golfer already fighting a ballooning drive should read that as a warning. Mizuno’s page is split on trajectory: the chart says Medium, and the feature copy promises a higher flight and a steeper landing angle. The robot’s 91-foot peak at 116 mph backs the feature copy.

Pro S. At the 86 mph driver condition it finished third for total distance in the 48-ball field, behind only the Pro V1 and Titleist Tour Soft (~88), with the top five separated by about a yard. A 96-compression urethane ball finishing that long at 86 mph cuts against the idea that slower swings need a soft ball for distance. Off high-speed irons the test named it one of the three longest firm balls, with the Chrome Tour Triple Diamond and Maxfli Tour X, and its iron spin sat in the bottom half of that chart despite the firmness. It did land among the slowest off the 65 mph iron, with the Maxfli Tour X LS (~97) and Snell PR3 (~93), but that whole field spanned 1.3 mph with 12 balls tied at the top.

Mizuno also calls the Pro S “Medium” compression. Anything in the mid-90s is firm by any tier definition.

Mizuno vs Titleist Pro V1: what the data shows

Mizuno’s urethane tour balls compete directly with the Pro V1 line on construction, and the gap is narrower than the brand recognition suggests. The Pro S and Pro X share the urethane cover, multi-layer build, and compression range of the Titleist Pro V1 (~92) and Titleist Pro V1x (~102). Golf Monthly’s reviewer called the Pro X a phenomenal ball and rated the Pro S excellent value among premium balls.

	Mizuno Pro X	Titleist Pro V1x
Compression	~102	~102
Cover	Urethane	Urethane
Construction	Multi-layer	4-piece
Made in	Asia (contract)	USA (Titleist plant)
MSRP/dozen	$50	$57.99

The Pro V1x earns its premium on proven, in-house quality control and decades of tour usage, and a calibrated short game that lives on spin consistency can feel that edge. For most golfers the gap is smaller than the price difference, and the 84 that Mizuno’s prior tour ball scored in its 2023 Ball Lab teardown shows contract production can hold tight tolerances. If you want the deeper Titleist context, the Pro V1 vs Pro V1x breakdown maps the two flagships onto swing speed.

The value pick, the flagship, and who should skip Mizuno

The RB Max is the value pick and the Pro X is the flagship, with the Pro S as the tour ball most amateurs should play. The RB Max delivers 3-piece construction and a durable cover at $30, which fits the widest slice of golfers. The Pro X carries the brand at the top, and the softer Pro S suits the 90–105 mph swing where most buyers live. For a fuller cross-brand picture, see where the value tier lands in the best value golf ball rankings.

Mizuno is the wrong call in four cases:

You play under 95 mph and grabbed a Pro X for distance. You’re paying tour-ball money for a firm feel and extra driver spin. If you don’t need greenside bite, the softer RB 566 costs $28 less a dozen.
You score on greenside spin and bought the RB Max or an RB 566. The ionomer cover gives up the bite that wins up-and-downs. Stay in the urethane Pro line.
You want the most proven quality control money can buy. The Pro V1’s in-house tolerances still set the bar.
You play a lot of cold golf and want a firm ball. The low-compression RB 566 is the only Mizuno that stays soft in cold weather; the firm urethane balls feel harsh.

Conformance isn’t a worry. Mizuno’s on-course balls sit on the USGA conforming list and are legal for tournament play. Check the list for the exact model before a competition.

The next step

This guide narrows four Mizuno balls to the one or two that fit your swing and wallet. To pressure-test the pick against the wider market, take the BallCaddie fitting quiz — it scores the Mizuno lineup alongside 72 balls in the catalog on swing speed, typical miss, greenside priority, and budget. The quiz runs about 90 seconds. Your fitting report is free; your #1 ball is paid. It tells you whether a $22 ionomer ball or the urethane upgrade fits your game.

Related guides:

How to choose a golf ball for your swing speed — the compression-to-speed framework that sorts the whole Mizuno lineup.
Golf ball compression chart — where every ball lands on a calibrated gauge, by swing-speed tier.
Urethane vs ionomer covers — what the RB Max and RB 566 ionomer covers cost you around the green versus the Pro line.
Pro V1 vs Pro V1x — the Titleist benchmark the Pro S and Pro X are built to chase, mapped onto swing speed.
Best value golf ball in 2026 — where the RB Max and the rest of the value field rank across brands.

Key takeaways

Four balls, two tiers: two urethane tour balls (Pro X, Pro S) and two ionomer value balls (RB Max, RB 566).
Pro S and Pro X are the 2025 flagships that replaced the now-discontinued RB Tour and RB Tour X.
Pick by swing speed: Pro X above 105 mph, Pro S or RB Max at 90–105, RB 566 under 95.
The Pro balls chase the Pro V1 on construction and compression at about $8 less per dozen, with Titleist holding the quality-control edge.
The savings are structural: Mizuno designs the balls and contracts production rather than owning a plant.
All on-course models are USGA conforming — verify the exact model on the current list before tournaments.

Sources

MyGolfSpy, 2026 golf ball test
Golf Digest, Mizuno RB Max and RB 566 golf balls: what you need to know
Golf Monthly, Mizuno Pro S golf ball review