Inside Ping’s ridiculously fast i525 iron that’s making waves on Tour

Ping's new i525 iron.

Courtesy of Ping

Ping’s new i525 iron is ridiculously fast. But instead of simply cranking up the ball speed with the i525, Ping focused on fine-tuning the acoustics as well, giving the new line a combo of distance and sound that’s been difficult to create in recent years.

In the previous iteration of the i-Series, a hollow cavity backed a maraging steel face. Maraging steel is stronger than both stainless and carbon steel, so it can be made thinner to boost ball speed. That’s a good thing, yet the combo negatively affected the acoustics.

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Ping i525 Irons

A new ballistic face design that increases speed, distance and control combines with a targeted polymer to provide better feel and sound.

To solve the problem in the i525, Ping placed four grams of EVA polymer behind the face and in the heel to achieve a more pleasing sound and feel. The improvement has already been a positive for Ping’s Tour staff, including Cameron Champ. During testing, the quieter acoustics played a key role in his decision to switch from i500 (4-iron) to i525 (3-UW; $1,499 per set;

While the polymer helps tune sound, it doesn’t affect the overall performance of the maraging steel face due, in large part, to an internal sole undercut that increases overall face flex for more ball speed and — bonus — a higher launch angle.

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Jonathan Wall Editor

Jonathan Wall is GOLF Magazine and’s Managing Editor for Equipment. Prior to joining the staff at the end of 2018, he spent 6 years covering equipment for the PGA Tour.