NANOALLOY™ Face TechnologyAt the heart of the JPX ONE is a face material that behaves differently under load. NANOALLOY™ uses microscopic polymer dispersion within the metal structure, allowing the face to dynamically alter its elasticity during impact. Rather than responding uniformly like traditional titanium or composite faces, the material stores and releases energy more efficiently across varying strike locations. The result is higher ball speed retention when contact moves away from the centre, without introducing a harsh or unstable feel.CORTECH Face DesignThe NANOALLOY™ face is paired with a newly engineered CORTECH Face that is up to 0.35mm thinner than previous Mizuno driver designs. This reduction in thickness expands the CORAREA, or high-speed rebound zone, by more than 15 percent. In robotic testing, this combination produced faster ball speeds and longer carry compared to leading competitors, with performance gains extending across the face rather than being limited to centre strikes.Forgiveness-Focused Head ShapeThe JPX ONE features a larger overall footprint than the JPX ONE SELECT, increasing stability and resistance to twisting through impact. A larger CG angle and reduced face progression promote a straighter, more neutral ball flight, helping keep dispersion tight when swing delivery varies. The shape sits confidently at address without appearing stretched or exaggerated, supporting committed swings without visual distraction.Adjustable PerformanceAn adjustable back weight allows ball flight and stability to be fine-tuned during fitting. Combined with Mizuno’s Quick Switch hosel system, loft and face angle can be adjusted to dial in launch conditions without altering the driver’s inherent balance. The adjustability is designed to support fitting precision rather than encourage constant experimentation.On-Course PerformanceOn the course, the JPX ONE produces a mid-high launch with controlled spin and a notably stable flight. Centre strikes deliver strong carry and a neutral trajectory, while strikes towards the heel or toe retain speed and direction better than expected. The driver feels calm through impact, avoiding the overly lively response common in high-speed designs. it’s a driver that rewards consistent swings, but remains supportive when timing or strike location drifts.JPX ONE vs JPX ONE SELECTThe JPX ONE is the more forgiving of the two models. Compared to the SELECT, it offers a larger footprint, higher stability, and a straighter overall flight bias. The JPX ONE SELECT moves towards a more compact, tour-inspired shape with a neutral-to-fade tendency, better suited to confident ball-strikers. Golfers seeking consistency and forgiveness will gravitate toward the JPX ONE, while those prioritising shape and shot control may prefer the SELECT.Specifications Model Loft Range Lie Range Length Dexterity JPX ONE 9.0 ° 7.0 °–11.0 ° 60.5 ° (59.0 °–62.0 °) 45.75” RH / LH JPX ONE 10.5 ° 8.5 °–12.5 ° 60.5 ° (59.0 °–62.0 °) 45.75” RH / LH JPX ONE 12.0 ° 10.0 °–14.0 ° 60.5 ° (59.0 °–62.0 °) 45.75” RH / LH Built In-House at Nine by NineEvery Mizuno JPX ONE Driver is assembled in-house at the Nine by Nine Golf workshop. Each club is built by a single master builder and finished to tour-level tolerances before dispatch. The focus is on accuracy and consistency, so the club you receive matches the specification you ordered.