The support has helped pay for vital equipment for Stef and will also help the club with its running costs.
Veteran forward Stef said: "The club relies very heavily on sponsors and that ranges from main club sponsors all the way through to individual sponsorships for players. I was very pleased to be offered sponsorship by Clarkston Chiropractic and I've already benefited from treatment there on two occasions.
"The owner Derek Leitch and his staff are excellent and he has even been kind enough to offer special rates for players and separate deals for club members and our friends and family.
"I look forward to working with the company all through this season."
Mr Leitch says that any PRFC members or their friends and family should get in touch to find out about special rates available.
He adds: "We're thrilled to be able to sponsor Stef and we hope he and the team have a great season. We are pleased to be able to work in conjunction with the club's physios and also to offer discounted rates for the extended Paisley Rugby Club family."
Clarkston Chiropractic has branches at Clarkston Toll in Glasgow's Southside and also at Blythswood Square in Glasgow City Centre. Call them on 0141 6200832 or visit the website at www.clarkstonchiropractic.co.uk