Dean Harrison will compete for Silicone Engineering Racing in the Paul Iddon-managed team after signing a two-year deal.
Harrison, who was released from his contract with Northern Ireland team Mar-Train Racing after a year on Yamaha's new YZF-R1 Superbike, will compete at the North West 200, Isle of Man TT and Ulster Grand Prix.
The 26-year-old, who will also compete in some British Superbike rounds, has yet to decide on his selected machinery with the team for next season.
“As soon as I met Paul and the rest of the team and saw the set-up from the bike preparation to the calibre of the other riders and their knowledge, I knew it was a great opportunity to join a team on the up,” said Harrison.
“The flexibility of how the team is run was another plus for me as I can really have an influence on key decisions on the bike, which I believe will take me to greater levels and hopefully bring success to the team.”
Harrison, whose victory in the Gold Cup meeting at Scarborough in September was the standout result of his season on the Mar-Train Yamaha, has already tasted success at the TT after winning the Lightweight race in 2014.
He also impressed with an excellent ride to second place in the Superstock TT in 2014 behind Michael Dunlop and will be confident of showing his true colours again next year on the Mountain Course after a low-key year by his standards.
Team manager Iddon said: "We're absolutely delighted to have Dean come on board and join us for the next two years.
"It is a massive opportunity for Silicone Engineering Racing to take the step to another level and push the team to new heights.”