Today’s RTX 4 model ($140 each) carries on the tradition exceptionally well with fourth generation Rotex face technology which features the most aggressive face milling and sharpest grooves of any Cleveland wedge to date.
A forged carbon steel clubhead further enhances feel at impact while an internal face perimeter cut-out design increases the effective hitting area on the face by about 15%. This provides more forgiveness on off center hits and better ballspeed retention overall.
One big difference is the addition of a new four-model structure with Tour (T) Players (P) Extreme Forgiveness (XF) and Super Game Improvement (SGI) now offered. But the real design difference has to do with the a new material used in the clubs that produces more speed and distance among other things.