When Ping first created the G-series irons, the intention was to create the most forgiving iron that Ping has created. With it's sixth version of the G-series, Ping have revamped their design of the G25 irons to make them more aesthetically pleasing for a wider range of golfers, whilst still maintain G-level forgiveness.
Ping's engineers have made upgrades on materials, finish, thickness, density, weight and even the adhesive used to secure the cavity badge in the back of clubhead.
The idea behind the G25 iron was to create a forgiving, playable iron without the bulky, oversized look that may turn some players off. The new design has a thinner, more progressive sole width, thinner topline and moderate offset (roughly 12% less than the G20).
With the narrower sole design, and trailing edge grind, the G25 are actually closer in size to the i20 and Anser irons, than the previous G-series G20 irons.
The Custom Tuning Port (CTP) has been positioned lower on the face, better aligning with the impact line (i.e. the line perpendicular to the loft of an iron). Combine the new CTP with the support bars in the cavity and the result is a clubhead that won't rotate as much during impact, meaning more energy transferred and more speed.
The new dark, non-glare matt finish has been added to further enhance the look of the G25 iron, whilst also eliminating reflections and help players focus at address.