In PingMan and player testing, the G20 launched at a slightly lower angle than the G15. It also gained ball speed, helping the ball climb higher over the full flight.
The clearest change showed up at the long end of the set. PING testing found the G20 4-iron travelled farther than the G15 version, while 7-iron distance remained the same. That could tighten the gaps between clubs without adding distance across the whole set.
The design stays close to the successful G15. PING kept a similar head and face profile, then made the face thinner and shifted weight to increase forgiveness.
The elastomer CTP weight supports the thinner face and cuts unwanted vibration. An aluminum-and-elastomer cavity badge also gives PING a way to adjust weight and center of gravity.
According to the product description, removing weight from the face and disconnecting the CTP from the sole raised moment of inertia on both horizontal and vertical axes. PING's stated priority was functional distance control: on off-center strikes, the redistributed mass is intended to help maintain trajectory and control spin, limiting distance loss.
PING also reported higher player satisfaction than with the already well-regarded G15.
The company described the G20 as the most-played SGI iron on tour, even though the model was two years old. Staff and non-staff players used it, and the account says only one tour player had a set ground. Tour use has also figured in coverage of other iron choices, including this Mizuno tour report.
PING built its CFS shaft family from the ZZ65. CFS stands for control, feel and stability. After blind testing, players generally liked the ZZ65's feel and performance, so the new range runs from Soft Regular to X-stiff.
The stiff CFS has a tip extended by an inch to meet the stated industry standard. Short irons get slightly less tip reinforcement for feel. The X-flex tip is one inch shorter and weighs five grams more, while Regular and Soft Regular have no tip reinforcement to help activate the tip.
For a trimmed 7-iron, CFS weights are 94 grams in Soft Regular and 99 grams in Regular. Stiff weighs 109 grams, while X-stiff comes in at 114 grams. That gives golfers more choices in flex and shaft weight than the original hard-stiff ZZ65.
Used G20 sets remain on the market. Listings vary by length and dot color, and shaft configurations differ too. Used PING iron listings show examples of those options.
