Mizuno has introduced two new fairway woods for 2019 - the ST190 and the ST190 TS (Tour Spoon) - positioning both as the lowest spinning and most forgiving fairway woods the company has produced to date. The distinction between the two models is structural from the start: the ST190 uses a bonded hosel, while the ST190 TS comes fitted with a Quick Switch adjustable hosel that allows players to dial in different launch conditions. That single difference drives a $50 price gap, with the ST190 retailing at $250 and the ST190 TS at $300.
Both clubs are built around an HT1770 Maraging steel face - a deeper construction than conventional fairway wood faces - which Mizuno says flexes more like a driver than a typical fairway wood. The engineering intent is straightforward: more face flex translates to higher ball speed across a broader portion of the face. Readers who follow retail technology and hardware specification trends in other regulated product categories - including operators researching cannabis POS for Nevada dispensaries - will recognize the same underlying logic at work here: build the system around maximizing efficiency at the point of contact, then engineer around the trade-offs that efficiency creates. In Mizuno's case, the trade-off is backspin, which a deeper, faster face tends to increase.
That backspin problem is where the composite crown does its work. By substituting composite material for metal in the crown, Mizuno frees up roughly 4 grams of weight and repositions it lower in the head. Lower center of gravity, combined with the deeper clubface geometry, is what Mizuno says produces the low-spin ball flight both clubs are designed around. Here's the catch with most fairway wood engineering: you can lower spin or you can increase ball speed, but doing both simultaneously without sacrificing forgiveness is where most designs make concessions. Mizuno's answer is the composite crown paired with a COR-optimized face and a low sweet spot design - an attempt to hold all three variables in acceptable range at once.
The Soleplate's Role in Off-Center Performance
The Amplified Wave Soleplate is the third piece of this engineering approach, and arguably the least visible to the consumer. Its enlarged first wave is designed to balance clubhead stability against sweet spot height - the idea being that effective off-center forgiveness is achievable without adding the excess backspin that typically comes with it. That is not a trivial engineering constraint. Forgiveness in a fairway wood usually means a higher, more rearward center of gravity, which adds spin. Mizuno is threading between those two outcomes.
Mizuno Senior Engineer Kei Tsui addressed this directly: "The ST190's deeper face is not just useful from the tee - it also gives the clubface a larger frame that functions more like a driver for higher ball speed. Normally that is compromised by a higher sweet spot and additional backspin, but by using our carbon composite crown and Wave Soleplate, we were able to combine high ball speeds with an efficient ball flight."
Design Choices Worth Noting
Both the ST190 and ST190 TS are finished in black - a departure from Mizuno's traditional blue colorway. Both clubs also produce a fade trajectory, which Mizuno has built in rather than made adjustable on the bonded ST190. The ST190 TS, with its Quick Switch hosel, gives the player more latitude to shape launch conditions, which is the practical justification for the $50 premium. Whether that adjustability matters depends entirely on the individual player's priorities; for a player content with a consistent fade and a fixed launch profile, the bonded ST190 is the simpler and less expensive option. For one who wants flexibility, the TS earns its price.
What's striking about the full ST190 package - the Maraging steel face, composite crown, repositioned weight, and Wave Soleplate - is that none of these are standalone novelties. Each element addresses a specific limitation that the others create or expose. That kind of integrated engineering is harder to execute than it sounds, and it's the right way to read Mizuno's claim that these are their most forgiving low-spin fairway woods yet. The claim is specific, not generic, and the mechanism behind it is at least coherent on paper. Whether it holds up across a range of real-world swing profiles is the question the market will answer.
