They beat Waveney Reserves 4-2 on penalties on Saturday after the sides were level at full time with the score standing at 3-3.
The final is on the 25th April at the FDC when Attleborough Reserves will be the opposition, kick off 7.15.
Gorleston Reserves are the holders of the trophy having beaten Gayton in last years final. No side has ever retained the CS Morley Cup.
Updated 21:36 - 25 Mar 2017 by David Hardy