Mizuno ST-Z 230 Driver

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)