Mizuno GRH Jpx 921 Hot Metal Irons 4 to Pw Plus Gw Reg Nspro 950 GH Neo

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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.

Features & Benefits:

  • 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.


Forged 4 19° 60° 38.50"
Forged 5 22° 60.5° 38.00"
Forged 6 25° 61° 37.50"
Forged 7 29° 61.5° 37.00"
Forged 8 34° 62° 36.50"
Forged 9 39° 62.5° 36.00"
Forged PW 44° 63° 35.5"
Forged GW 49° 63° 35.25"
Forged SW 54° 63° 35.25"
Forged LW 59° 63° 35.25"

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