[2] The objective of this category is to create a ladder to Superbike in an accessible way and with a mechanical equality that allows all the drivers to have the same winning options.

Spaniard Marc García was the first Supersport 300 world champion to overcome the Italian Alfonso Coppola by one point.

[3] On 2019 season, in order to face the big entry list[4] (caused by the success of previous edition), FIM split Practice and Qualifying into 2 groups with best 30 riders racing on Sunday.

[5] The series has been noted for its close competition, which has been criticised as dangerous due to the risk of riders striking each other in the event of falls.

The bikes allowed to run in this category are not exclusively 300 engine capacity, which is why the minimum weight and revolutions per minute vary for each motorcycle model.