It has a fantastic sound off the face – high pitched and sweet.
We love the blue crown on the JPX900 – it’s not as shiny as the previous JPX850 so doesn’t get glare from the sun.
It does make a bit of a whistling sound through the air but there’s no problem with that at all.
From a pure ball speed point of view the JPX900 did seem to be performing better for our ABH – the dispersion was a bit tighter too.

The first shot with the 917 wasn’t Randy’s best of the day and it seemed to bring his averages down.
Mizuno were very excited with the release of the JPX900 and it was pleasing to see the ball speed numbers getting close to 170mph.
The 917 was getting up to 165mph so not far behind at all.
Titleist 917 vs. Mizuno JPX900 – NCG verdict
Although this was a very interesting test to see we’ve taken the results with a pinch of salt.
Basically because these drivers are all about the custom-fitting process in order to get the best performance.
These drivers are all about getting you dialled in to get the most out of your swing, help promote the sort of shot you want to see and/or minimising your bad shot.
Our pro did set both of these drivers up in a way he felt would work for our Randy on the day but is was far from a custom-fitting.
If Randy had a fitting for each driver, the results may have been different.
What is clear to us though is that this is a serious driver from Mizuno.

In terms of ball speed it’s right up there with the new Callaway and TaylorMade drivers we have tested so far this year.
We think it’s the best driver Mizuno have released to date.