Jack Kennedy believes Mar-Train Yamaha Racing unlocked some of the untapped potential of their R1 machine following testing in Spain.
The team is preparing for its first full season in the Bennetts British Superbike Championship, with the opening round at Silverstone at the start of April.
Kennedy finished eighth fastest at Circuito de Navarra after three days of testing from March 11-13, and also got laps under his belt during a private test at Andalucia.