Brand: Mizuno
Model: JPX 850 Forged
Type: Iron Set
Loft: Standard
Shaft: True Temper XP 115 S300
Shaft Flex: Stiff
Shaft Material: Steel
Length: Standard
Adjustments: No
Grip: Golf Pride Tour Velvet
Grip Size: Standard
Headcover Included: N/A
Wrench Included: N/A
Condition Guide
Head: 7/10 - Good
Shaft: 6/10 - Fair
Grip: 6/10 - Fair
The Mizuno JPX 850 Forged Irons combine the soft, responsive feel of traditional forged golf irons with modern distance technology and added forgiveness. Originally introduced in 2014, these premium cavity-back irons are designed for golfers who want the performance of a players' iron without sacrificing valuable ball speed and stability.
Featuring Boron-infused steel, Grain Flow Forging, Power Frame Construction and precision CNC-milled cavities, the JPX 850 Forged delivers an excellent balance of distance, control and consistency. Its progressive design makes it particularly appealing to mid-handicap golfers and improving players seeking a refined iron with additional forgiveness.
Boron-Infused Steel Construction
The JPX 850 Forged was one of Mizuno's pioneering irons to incorporate 1025 Boron-infused carbon steel.
Approximately 30% stronger than conventional carbon steel, this material allows Mizuno to manufacture a thinner clubface while maintaining structural integrity.
The thinner face promotes greater flexibility at impact, helping generate increased ball speed and distance.
This innovative construction allows golfers to benefit from modern distance performance while retaining the premium characteristics of a forged iron.
Mizuno Grain Flow Forging
Mizuno's renowned Grain Flow Forging process is central to the JPX 850 Forged's distinctive feel.
By forging the clubhead from a single billet of Boron-infused steel, Mizuno creates a refined structure designed to deliver consistent impact feedback.
The result is the soft, solid sensation traditionally associated with Mizuno forged irons.
For golfers who value feel and feedback on approach shots, the JPX 850 Forged offers a satisfying alternative to conventional cast distance irons.
Power Frame Technology
The Power Frame Construction features a reinforced perimeter surrounding the clubface.
This design redistributes weight towards the edges and sole of the clubhead, increasing stability and expanding the effective hitting area.
The additional perimeter weighting helps minimise twisting on off-centre strikes, supporting more consistent distance and accuracy.
It provides useful forgiveness without the oversized appearance of a traditional game-improvement iron.
Ultra CNC Milled Pocket Cavity
The longer and middle irons, from 4 to 7, feature an Ultra CNC Milled Pocket Cavity.
This precision-machined pocket removes material from behind the face, allowing weight to be positioned lower in the clubhead.
The lower centre of gravity encourages easier launch and improved carry distance, particularly with the longer irons.
It also contributes to greater face flexibility and ball-speed performance.
Progressive Cavity Design
The JPX 850 Forged uses a progressive construction to balance forgiveness and control throughout the set.
While the 4–7 irons feature deeper milled cavities for distance and launch assistance, the shorter irons use a more compact cavity design.
This provides a more controlled feel for scoring shots where precision and distance management are particularly important.
The progressive design helps golfers transition naturally from forgiving long irons to responsive short irons.
Players' Profile with Added Forgiveness
The Mizuno JPX 850 Forged features a clean, traditional appearance with a relatively compact head and refined topline.
Its cavity-back construction provides more forgiveness than a traditional muscle-back blade, while maintaining a confidence-inspiring players' iron profile.
The combination of perimeter weighting and a responsive forged face makes it suitable for golfers who strike the ball reasonably consistently but still benefit from additional assistance on mishits.
Distance & Consistent Ball Flight
The combination of Boron-infused steel and Power Frame Technology is engineered to produce strong ball speeds without compromising control.
The thinner face supports efficient energy transfer, while the progressive cavities help optimise launch characteristics throughout the set.
Golfers can expect a blend of useful distance, consistent trajectory and the responsive feedback needed for confident iron play.
Who Should Play the Mizuno JPX 850 Forged Irons?
The Mizuno JPX 850 Forged Iron Set is particularly well suited to mid-handicap golfers, improving players and confident ball-strikers seeking additional distance and forgiveness.
Its compact appearance appeals to golfers who prefer a traditional iron profile, while the cavity-back construction provides greater stability than a conventional blade.
For players seeking premium forged feel with modern distance technology, the JPX 850 Forged remains a compelling choice.
Key Features
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Mizuno JPX 850 Forged cavity-back irons
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Premium players' distance iron design
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Innovative 1025 Boron-infused carbon steel
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Approximately 30% stronger material than conventional carbon steel
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Thinner face construction for increased ball speed
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Mizuno Grain Flow Forging Technology
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Soft, responsive forged impact feel
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Power Frame perimeter weighting
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Increased stability on off-centre strikes
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Ultra CNC Milled Pocket Cavity in 4–7 irons
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Lower centre of gravity for easier long-iron launch
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Progressive cavity construction throughout the set
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Compact, confidence-inspiring players' profile
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Strong combination of distance and control
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Particularly suited to mid-handicap and improving golfers
Pictures are of the actual item for sale. Condition is reflected in both the photos and the condition rating. For more information on the condition rating, please visit the Condition Guide tab.
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