Featuring the same dual muscle technology as the 68’s the MP-58’s have seen Mizuno bringing multi-material technology into the MP range. Every previous iron in the MP range has been made from a single billet of steel but the MP-58 combines the soft 1025E carbon steel with a titanium insert.
For a company known for their forging, Mizuno might be seen to be taking a healthy risk by doing this but have offset this by the way that they forged the two together. The 11g gram titanium muscle piece is brought together with the pure select mild carbon steel head while they are both red hot from the first forging process and then forged together yet again. The result is that the titanium is bonded to the head far more strongly than it otherwise could be. Because of this the MP-58 is designed to offer shot-makers a club that is more forgiving that the 62 and more workable than the 52 but keeping the thickness behind the ball that contributes so heavily to the sound and feel.