For ClubTest 2021, we tested and reviewed 22 new drivers to help you find the right one for your game. (For more on our testing process, click here.) Below are the results for the Mizuno ST drivers. You can find the full list of drivers and test results here.
ST-X: 10.5˚, 12˚; ST-Z: 9.5˚, 10.5˚
Our take: Mizuno is making big strides when it comes to metalwoods of late, with the ST drivers proving that the company is equally dedicated to creating high-performing drivers with the same measure of success found in its popular iron iterations. New models not only launch the ball farther with more ball speed, they look and sound better than any Mizuno drivers tested to date.
Mizuno ST X
The details: A forged SAT2041 Beta Ti face delivers impressive ball speeds and, depending on the model, a carefully designed blend of carbon-composite construction and internal weighting to promote either a draw bias (ST-X) or low-spin trajectory (ST-Z). The hosel also offers four degrees of loft adjustability.