- 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 ballspeed and promote straighter shots.
- Speed Pocket technology improves low-face flexibility to deliver more ballspeed in the key area where golfers commonly mis-hit.
- Face Slots enhance face flexibility in the heel and toe areas to preserve ballspeed on mis-hits for greater consistency.
- The Fluted Hosel and 360° Undercut technologies produce discretionary weight that has been relocated low in the clubhead to improve launch, spin, and forgiveness.
- M4 Rescue has been designed with split internal weights that increase forgiveness and promote more ballspeed across the face—helping golfers find the center cut with greater consistency.
- Speed Pocket technology preserves ballspeed on low-face shots, providing added forgiveness and consistent distance.
- Geocoustic technology enhances the playability and feel of the M4 Rescue, delivering exceptional shotmaking ability from any lie