ST-G 220

Independent commentary positioned the head as competitive with the market's most forgiving products for COR and MOI when shipped in neutral. But the chassis is single-loft (9°) with a taller face, a smaller-looking 460cc footprint, and tour-aspirational geometry — built for accomplished ball-strikers, not max-MOI seekers. The two 8g movable weights pushed to the rear-centre track add modest stability, but the head sits a tier below dedicated game-improvement designs on forgiveness.

Independent reviewer testing measured the head spinning less than competition in every weight setting — material distance gain at above-average swing speeds. The chassis allows effective movement of weight along both X and Z axes to dial in very low spin. The SAT2041 Beta Ti face is 17% stronger than commercial 6-4 Ti and 8% more flexible, translating into faster ball speeds across the strike zone. With weights split forward, ball-speed parity with category leaders. Top-tier 2022 tour-distance numbers.

Class-leading 2022 workability. Three weight tracks (heel-side, toe-side, rear-centre) plus two 8g movable weights enable the head to morph from ultra-low spinning bomber to highly playable mid-spinning option — with fade or draw bias in both. Reviewer testing called workability "one of the driver's strong suits." The Quick Switch hosel adds 4° of loft adjustability (7-11°) on top. Single-loft 9° head plus the Fast Track system delivers a full shape-tuning canvas for the tour-spec player.

Reviewer testing consistently called the head "incredibly solid with dense, powerful feel," with the SAT2041 Beta Ti face plus HIT-tuned impact sound ribs preserving Mizuno's forged-iron tactile DNA in a Ti driver chassis. Independent review described "a dense and satisfying sensation at impact… the exceptional feel at impact makes this a standout offering for better players." Elite feel — a brand benchmark for driver tactile response.

Acoustic profile reads quiet and dense — engineers have worked to tune vibration levels down to create a satisfying impact sound, with HIT-tuned impact sound ribs strategically placed to tune frequency and sound pressure. Reviewer testing called the sound "nothing out of the ordinary and not noticeably loud or 'tingy'." Premium muted-thump character that ages well.

Address profile reads noticeably smaller than the standard ST-X and ST-Z sibling heads despite still being 460cc, thanks to the taller face — a compact tour-spec profile that frames the ball cleanly. Premium Mizuno design language with a clean shape and visible three-track sole geometry. Industry-panel testers rated the family highly. Confidence-inspiring for the better player; visibly engineered.