Mizuno ST-Z 230 Driver
Straight, Stable, and Low Spinning
The Mizuno ST-Z 230 driver is straight bias driver with excellent stability from off center hits. Boosted by the CORTECH Chamber to be faster from the face, spin less and deliver an incredible, solid sensation at impact.
CORTECH Chamber – The missing piece
Mizuno’s CORTECH Chamber encases a 3 gram stainless steel weight with elastomeric TPU – taking stress from the clubface and creating an additional source of energy.
Forged SAT 2041 Beta Ti Face
More resilient than commonly used 6-4 Ti, now even engineered even thinner, with stress unloaded to the CORTECH Chamber.
Unified Sole Composite
Carbon sole plate now a single piece to allow the forward weight press of Mizuno’s CORTECH Chamber.
Straight flight bias
Mass spread evenly to encourage a highly stable, straight ball flight.
Modern Players Profile
Pushed lower to the ground for low / mid spin performance and aligns square to open.
Quick Switch Adapter
4 degrees of loft adjustability to fine-tune look and trajectory
Specifications
| Head | Loft Range | Lie Range | Length | RH/LH |
|---|---|---|---|---|
| 9.5° | 7.5° – 11.5° | 59° (57° – 60.5°) | 45″ | RH/LH |
| 10.5° | 8.5° – 12.5° | 59° (57° – 60.5°) | 45″ | RH |
| Shaft Model | Weight | Launch/Spin | Flex |
|---|---|---|---|
| Aldila Ascent 40 Ultralight | 44g (A); 47g (R); 48g (S) | High/Mid-High | R2 (A); Regular, Stiff |
| Mitsubishi Kai’li Blue 50 | 55g (R), 57g (S) | Mid/Mid | Regular, Stiff |
| Mitsubishi Kai’li Blue 60 | 64g (R), 66g (S), 68g (X) | Mid/Mid | Regular, Stiff, X-Stiff |
| UST Mamiya LIN-Q Red 50 | 57g (A); 57g (R); 57g (S) | Mid-High | F2 (A); F3 (R); F4 (S) |
| Project X HZRDUS Smoke Green RDX 60 | 61g | Low/Low | 6.0 (S); 6.5 (X) |

















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