The Lava Bomb takes the form of an orb-shaped bomb made of lava with fire spikes protruding from it, both as an icon and on the tracks.
In gameplay, the Lava Bomb can only be obtained at random from Item Boxes by Blaze, Quarterback Zavok, and Sir Percival. As with most other Items, Metal Sonic can also use the Lava Bomb if he uses the Steal Item to steal it from the aforementioned users.
Once obtained, the player can utilize the Lava Bomb by pressing its icon on the bottom of the HUD. When used, the Lava Bomb's bomb will appear in front of the user's next rival if the user is behind said rival. If the user is leading the race however, it will appear on the lane directly behind them. If a character, including the user themselves, touches this bomb, it will explode and damage the character, causing them to lose Rings and slow down momentarily. To avoid the Lava Bomb, the playable character has to either step out of its lane or jump over it.
The Lava Bomb can also be upgraded by leveling the user up to level 4, 10 and 16 respectively. For each upgrade, the player will increase the damage dealt with the Lava Bomb.