Mizuno ST-X

The line is engineered to produce a higher, draw-biased flight suitable for those with moderate swing speeds who need elevated launch. The 3-wood uses a slightly heelward CG and an in-board hosel axis for built-in draw bias — masks the typical amateur slice miss. Multi-thickness pads behind the face support ball-speed retention on off-centre strikes. The 5-wood and 7-wood use a maraging steel face with waffle crown to lower CG. Above-average forgiveness for slicers and moderate-swing-speed players — the draw-bias geometry is a forgiveness multiplier for the target audience.

Independent fitter testing on the 3-wood (15°): average ball speed of 136.6 mph, average spin rate of 3,499 rpm, and average carry distance of 219 yards with about 22 yards of draw bias. Multi-thickness pads are designed to raise ball speeds. The all-titanium 3-wood uses a beta-titanium face for premium ball speed; the 5-wood and 7-wood use maraging steel. Solid mid-pack distance — the draw bias and higher-launch / mid-spin profile cap total carry versus low-spin tour fairways.

Fitter testing measured about 22 yards of draw bias on the 3-wood — the head imposes a strong directional bias rather than allowing free shape control. The heelward CG and in-board hosel axis are explicitly engineered for a built-in draw. Higher launch profile makes the head less penetrating in wind versus the low-spin tour sibling. Below-average workability — by design, the head fights player-driven fades.

The line is engineered with more dense feedback through impact and a more muted, powerful tone — vibration-reduction engineering targets a premium tactile signature. The Wave Sole design near the face increases ball speed especially low on the face, contributing to a livelier contact sensation. Solid mid-tier feel for the brand's metalwoods — the all-titanium 3-wood and steel-faced 5-wood / 7-wood deliver consistent feedback across the family. Above-average feel for a 2021 game-improvement fairway.

The line was engineered with a year of acoustic tuning toward a more muted, powerful tone preferred by tour players. Internal sound-rib placement targets a consistent acoustic from the all-titanium 3-wood to the steel-faced 5-wood / 7-wood. Mass-property engineering maintains similar peak frequencies across face materials to keep the family's acoustic consistent. Above-average acoustic — muted, controlled-volume signature.

The head was explicitly designed with the draw bias hidden — no closed or shut face, no upright lie angle visible at address. The carbon composite crown lowers profile and gives a clean dark visual versus older glossy-titanium crowns. The address profile pairs well with the brand's player-style irons — confidence-inspiring without screaming game-improvement. Above-average looks — the draw-bias build is hidden from the address view, an underrated feature for slicers who don't want to advertise a draw-bias head.