Race for Glory

The name of this movie is Race for Glory released in 1989-11-02 and it's main theme is A member of an up and coming motorcycle racing team abandons his teamates to join a rival team. He ends up playing second fiddle to the champion of the new team. Not satisfied, and against the wishes of his new boss, he tries to beat the champion but fails. He leaves racing, eventually to return and reunite with his old friends in an attempt to win the Grand.