Nitro cans are extra speed boosts available in all STK gamemodes.
By driving through a blue can standing on the track (sometimes near the track), a player will receive some nitro, how much depends on whether it is a big or a small nitro can. A player can collect nitro until his tank is full. The current level of nitro is visible in the bottom-right of the screen. By pressing the appropriate key or button, players can use their nitro whenever they want to do so and will receive a speed boost, depending on how much nitro they use and on their karts' classes. A good tip is not using all of your nitro at once, but by pressing the corresponding key or button multiple times. For speedruns and online races, it is very important to have a good nitro usage and collect as much nitro as possible, as well as in Soccer gamemode.