M4 irons unlock a new level of straightness, distance, and forgiveness in a product designed to be the longest in our irons line up.
Introducing RibCOR technology, a breakthrough innovation in irons performance; RibCOR is designed to help you hit it LONGER, HIGHER, and STRAIGHTER. RibCOR localizes face flexibility, transferring more energy to the ball to increase ball speed and promote straighter shots.
The M4 Irons feature a Speed Pocket that improves low-face flexibility to deliver more ball speed in the key area where golfers commonly miss-hit. Combined with Face Slots to enhance face flexibility in the heel and toe areas to preserve ball speed on miss-hits for greater consistency.
With a Fluted Hosel and 360° Undercut technologies that produce discretionary weight that has been relocated low in the club head to improve launch, spin, and forgiveness.
Fitted as standard with the KBS Max 85 shaft that offers a light weight design to help generate a high ball flight for improved approach shot control and added ball speed.
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