Ducati's controversial new MotoGP part explained

Ducati kicked off the 2019 MotoGP season with victory for Andrea Dovizioso in a thrilling finish, but the team was also in the spotlight for a new addition to its bike that was protested by its rivals. Our technical expert Jake Boxall-Legge joins Glenn Freeman to explain what the new part is, how it works, why it has been declared legal, and what that could mean for the other manufacturers who don't have a similar design yet.