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.