Tank

Tank is a Gear Part that appears in Sonic Riders: Zero Gravity. It is an Extreme Gear component that refills the player's GP Gauge.

Description
Tank is an installable performance-enhancing component for Extreme Gears. Its actual appearance is unknown, though it is presented as an icon on the head-up display in the top-left corner of the game screen. Its icon is a light blue-colored circle with a black cylinder, which has a label with a black swirl on it, inscribed in it. In the game, Tank is permanently installed into only certain Extreme Gears.

When used, Tank automatically refills the player's GP Gauge completely. This can only be done once per Tank Gear Part, however.

In gameplay, Tank and its ability will be inactive at the start of the race. To activate Tank, the player must press one of the following buttons after collecting a certain amount of Rings:

When activating it, the Extreme Gear is surrounded by an orange void, indicating the Gear Part's ability is in effect.