Mizuno JPX921 Hot Metal Irons

The Mizuno JPX921 Hot Metal Iron Set deliver Mizuno's fastest ever ball speeds, a piercingly straight ball flight together with controllable landing angles. The JPX921 Hot Metal represent the 3rd generation of Mizuno irons to utilise the resilience of Chromoly – R&D generally accepts that any new technology needs three generations to reach near-optimal performance.

"The introduction of Chromoly was the breakthrough Mizuno needed to take a step up in ball speed. We learn more about the potential of Chromoly with each generation and push it further each time,” says David Llewellyn.

• New Clubface Geometry
  The JPX921 features Mizuno’s most complex face geometry to date, to produce additional energy from the clubface; the Hot Metal Pro version offering a more compact profile with reduced offset.
• 3rd generation Chromoly 
  The use of Chromoly 4140M and a re-engineered CORTECH face, now 0.2mm thinner across the centre point, creates exceptional ball speeds. These are further enhanced by the Seamless Cup Face featuring a variable thickness sole design that allows the leading edge to act as a hinge, generating greater flex.
• NEW Sound Ribs & Perimeter Weighting
  Three additional sound ribs produce a more solid sensation at impact while extreme perimeter weighting and toe bias in Mizuno’s Stability Frame help to deliver greater consistency from off-centre strikes.