While the MP-59 is made from steel, 12 grams of titanium are forged into a pocket behind the face of each club. (It's the slightly darker material in the photo above.) Mizuno says the titanium allows the clubs to maintain the ideal amount of thickness behind the impact area for solid feel while automatically redistributing the weight to the heel, toe and sole of the club. The Mizuno MP-59 Irons, the next generation of our award winning Ti Muscle™ Technology, delivers full cavity forgiveness in a player’s half cavity design.

During the elaborate Grain Flow Forging® process, the pure Titanium material is forged into the muscle of the
cheap MP-59 irons to deliver a 5% larger Sweet Area compared to the MP-58 irons, the iron that debuted Ti Muscle Technology while taking home ‘Editor’s Choice” in Golf Digest’s 2010 Hot List. People can purchase these high-end products as wholesale golf clubs, but they can fully enjoy the high technology at the same time.

The forged Ti Muscle Technology of the MP-59s as discount golf clubs is evident from the first swing. The titanium insert forged behind the impact area provides a solid feel and it provides just the right amount of forgiveness. I'm not a scratch golfer so I can't afford to be penalized on the course with an off center shot. But, at the same time, I don't want to play golf with a shovel so I want feedback when I'm not making solid contact. With the MP-59s, you get the feedback you want and the forgiveness you need.