In 2007, Mizuno presented Fast Track. A sliding weight system designed to help players' with their draws and fades. Fast forward to 2015, and Mizuno has added some considerable advancements to Fast Track.
The JPX-850 features 10 unique flight settings to increase launch speed and overall distance. Settings include a 4 neutral, 3 draw and 3 fade. Players can adjust twin 8-gram weights on two lateral slots or the central sliding rail.
Finished in a futuristic blue, the aggressive profile features a deep extended weighting system which allows the ball to launch with a low orbit.
Mizuno's Quick Switch shaft release system has quite a bit of adjustability, offering varying lofts from 7.5 to 11.5 within one head.
The JPX-850 driver ($399) has a 440cc titanium head with Fujikura's Motore VC6.3 stock shaft. Custom Shafts are available as well as a variety of custom grips for a more personal touch.