Mizuno JPX 921 Hot Metal Irons 4-PW,GW [MRH] [Reg]


SKU: IRMZ224_0571421235

RRP $1,912.00
SAVE $500.00 (26%)

  • Faster and faster Chromoly 4140M
  • Seamless Cup Face
  • Harmonic Impact
  • Pearl Brush Finish
  • Stability Frame

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The JPX921 Hot Metal irons pair Mizuno's fastest ever ball speeds with a piercingly straight, ball flight and controllable landing angles. The 3rd generation of Mizuno irons to utilize the resilience of Chromoly - the JPX921 has the most complex face geometry to date for additional energy from the clubface. Choose the more Pro version for a more compact profile with reduced offset.


The JPX921 Hot Metal is Mizuno’s 3rd generation to use Chromoly – R&D generally accept that any new technology needs 3 generations to near peak performance.


  • Faster and faster Chromoly 4140M: Our 3rd generation of designing and manufacturing irons using Chromoly – now taken to its limits. A re-engineered CORTECH face, is now 0.2mm thinner across the centre point.  
  • Seamless Cup Face: A new variable thickness sole design allows the leading edge to act as a hinge, resulting in greater face flex and ball speeds. 
  • Harmonic Impact:  Predicting vibration patters dictated 3 additional sound ribs – producing a more solid sensation.
  • Additional Hot Metal ‘Pro’ Version:  More compact option with reduced offset.
  • Pearl Brush Finish:  Anti-glare to minimise distractions over the ball.
  • Stability Frame:  Extreme perimeter weighting with toe bias for stability from off centre strikes.



"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."CHRIS VOSHALL / PRODUCT MANAGER, MIZUNO





Club # Loft ° Lie Angle Offset (inch) Length (inch)
4 19 60 0.224 38.5
5 22 60.5 0.213 38
6 25 61 0.201 37.5
7 29 61.5 0.189 37
8 34 62 0.173 36.5
9 39 62.5 0.154 36
PW 44 63 0.15 35.5
Model # 35908
Barcode # 5054453792604
Brand Mizuno
Year/Model 2021

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