The JPX 919 Hot Metal is available in 4-LW in both right and left hand options with a wide variety of premium no-upcharge shafts and grips. All three new JPX 919 irons are available through Mizuno’s Performance Fitting System and can be mixed and matched depending on individual player needs and preferences.
There are differences however including most notably more adjustability in the form of Titleist’s SureFit CG technology that allows for more specific spin rate and launch angle tuning. The TS3 also features a more traditional pear shape and tends to produce more of a mid-launch as compared to the TS2’s higher launch.
Other features of the new Hot Metal include the aforementioned “stability frame” design for higher MOI and improved launch as well as Mizuno’s new Pearl Brush non-glare finish.