Steven Duffy led the charge with two touchdowns, the others going to Colin, Murray Strang, Gavin Mories, Mark Sitch and Neil McKenzie. Mike Adamson kicked the remainder of the points.
Ben Addison ploughed through for Stirling's consolation effort - while Brian Archibald clipped over a penalty.
Aberdeen GSFP secured third spot in BT Scotland Premiership Division One with a 25-7 victory over Ayr at Rubislaw.
Aaron Pullman, Rod Seib (2) and Sean Crombie scored the tries which made sure of the bonus point, while Keith Oddie landed a conversion and penalty.
Paul Burke went over for Ayr's sole response, with Alasdhair McFarlane adding the extras.