Mizuno JPX-850 Forged Irons

JPX-850 Forged Iron Set

Born Out of Boron.

After 6 years of development - the introduction of BORON to Mizuno’s Grain Flow Forging process allows the JPX-850 Forged to overcome the distance limitations of traditional forged irons.

Mizuno’s new material is 30% stronger than traditional 1025E steel billets – allowing for a thinner face and extreme ball speeds. The result is an incredible iron that combines Grain Flow Forged precision and feel with shocking distance. A combination that was unachievable before BORON.

This new, thinner face is strategically reinforced by a Power Frame cavity which places weight to the extreme corners of the club head for maximum forgiveness along with increased distance. A clean, sleek design combined with these breakthrough technologies delivers an iron that looks and plays like nothing before.

Key Technology

• Power Frame: Enables entire face to flex for increased ball speeds and distance.
• Grain Flow Forged 1025 BORON: 30% stronger material for thinner face and longer distance while delivering soft, solid, consistent feel.
• Ultra CNC Milled Pocket: Higher launch angle and increased ball speeds in 4 through 7 irons.

Standard Shaft: True Temper XP 115 – R300, S300
Standard Grip: Mizuno M-31 360 .58 Round

“This is distance generated by genuine technology, rather than just cranking lofts or using longer shafts. It used to be that you had to give up distance to play a Forged iron … but with the JPX-850 Forged you no longer have to.”
-Chris Voshall, Senior Engineer