Mizuno Golf has today introduced its latest ST Series of drivers: the ST-Z 220 driver and ST-X 220 driver, which will both arrive at retail on February 3rd. 

The ST-Z and ST-X drivers both feature a 40% expansion of the carbon-sole area and thinning out the Titanium portion, alongside a doubling of the stabilizing back weight in design to provide excellent stability and consistency from off-center strikes.

“Any twisting or deflecting at impact due to an off-center hit is an energy loss and varies launch conditions. By working with the prior ST driver platform and familiar materials, we were able to find several adaptations to impact the internal weighting. Creating far more stable tendencies in both the ST-Z and ST-X.” – Mizuno’s Director of R&D David Llewellyn

Mizuno ST-Z 220 driver

The Mizuno ST-Z 220 driver features a balanced toe/heel carbon construction and central back weight designed to encourage a low spinning, efficient, straight ball flight.

The 460cc head aims to offer players a confidence-inspiring profile at address for elite players, while a heavier, 20g back weight creates a deeper center of gravity in design for more efficient performance, more often.

The ST-Z driver features Mizuno’s Z-Axis design with weight evenly distributed across toe and heel in design to provide a low spinning stable straight flight, while a highly resilient forged SAT2041 Beta Ti face and multi-thickness CorTech design aims to produce increased ball speeds.

In addition, an optimized Wave Sole is included in a bid to further increase ball speeds, particularly from low on the clubface, while 4 degrees of loft adjustability allows for fine-tuning of launch and trajectory.

“The ST-Z is the most played of all our drivers. It’s a modern driver for players who have grown up hitting long straight bombs rather than shaping the ball. The addition of a 20g back weight also makes it an exceptionally forgiving option,” says Chris Voshall.

Specs & Pricing

• Lofts: Right hand – 9.5 and 10.5 degrees. Left hand – 9.5 degrees only.
• Price: $449.95

Mizuno ST-X 220 driver

The ST-X 220 driver is a draw-biased driver with heel focused weight location aimed at players with moderate swing speeds who need help producing a more extended ball flight.

The new driver features a 20-gram heel biased back weight that creates a deeper center of gravity in design for more efficient, longer drives. The ST-X is also available as a J-Spec option with an ultra-lightweight HeLIUM NanoCore shaft for seniors and those with slower swing speeds.

The ST-X aims to deliver exceptional stability from off-center strikes via an expansion of the carbon sole area by 40% and thinning out the Titanium portion, alongside a near doubling of the stabilizing heel/back weight.

Featuring Mizuno’s X-Axis design, weight is focused deep in the heel, encouraging a higher draw bias flight, while a rounded 460cc profile seeks to offer a higher launch and mid spin performance.

A highly resilient forged SAT2041 Beta Ti face and multi-thickness CorTech design are also designed to produce increased ball speeds and the driver also includes an optimized Wave Sole, while 4 degrees of loft adjustability allows for fine-tuning of launch and trajectory.

“For a lot of golfers, the modern low spinning driver design preferred by tour players is a serious distance killer. The ST-X’s extra spin, slight draw bias and a higher flight will add driving distance for a surprising number of players.” – Mizuno’s Director of Product Chris Voshall

Specs & Price

• Lofts: Right hand – 10.5 and 12 degrees.
• Price: $449.95