valves

MotoGP technical director Danny Aldridge reveals level of scientific checking now in place to ensure motorcycles meet the regulations; 'The materials, the hardness, the dimensions, everything.'

2020 was a season of 'missed opportunities' for Yamaha, which won more than twice the number of races of any other manufacturer but still lost out on the MotoGP riders', constructors' and teams' titles.

Yamaha has withdrawn its request to replace valves on its 2020 MotoGP engines, saying it was unable to provide the documents requested and now knows how to manage the situation for the remainder of the season.