The Lions were put under intense pressure from the start and the City side had two goals scored within the first 10 minutes of play thanks to a header by Brian Farrell that hit the underside of the crossbar and went in over the line in the seventh minute.
Two minutes later it was former Perth Glory defender Jamie Coyne who unleashed a powerful strike that went in off the post leaving the Lions shell shocked.
Stirling responded looking to get back into the game and new Perth Glory signing Dean Evans went on a great solo run only to see his blistering shot hit the post and cleared by the Bayswater defence led by John Kearney. Golden Boot Gustavo Maralunda converted from a penalty shot after being tripped during an impressive solo charge on goal.
Stirling coach Doug Hesketh went to the bench searching for a new spark and Daniel Micevski almost paid dividends when he beat two defenders but shot just wide of the goals in the 37th minute.
The Lions threw caution to the wind in the second half as they sent defender Andy Brown forward and in the 78th minute a goal mouth scramble was smashed home by the Lions captain giving the quiet locals something to cheer about. Bayswater withstood the Lions assault through some rugged defending and then Jamie Coyne put the icing on the cake with his man of the match performance scoring a sublime chip goal in the 93rd minute.
The win sees the Bayswater side enter their first Grand Final since 1972 while the Lions will meet Sorrento in the Preliminary Final at Macedonia Park on Sunday at 2.30pm.