Adam Hatfield will drive for Team Pyro in the 2015 Michelin Clio Cup Series finale at Silverstone on 19/20 September.
Hatfield has contested the 2015 season so far with Finesse Motorsport, taking a best overall result of sixth place on four separate occasions.
“I am delighted to be joining Team Pyro for the season finale at Silverstone,” said the 17 year old.
“It’s a fantastic team with a great pedigree in Clios over the years, I’m really looking forward to starting this new chapter in my career with them.
“It goes without saying, I’d obviously like to thank everyone from Finesse for all of their hard work this year.”
Pyro team principal Mark Hunt is looking forward to working with Hatfield: “We’ve been speaking to Adam for quite a long time to be fair.
“The main aim is to get him ready for a full attack on the championship next season. It’ll be good for him to see how we work before this season is over.”
Pyro will also field another Clio at Silverstone for Charlie Fulk, who returns to make his second appearance in the series having debuted in the 2014 season finale at Croft.