These items are designed to hinder your opponents and clear your path to victory. Timing and aim are key to maximizing their effectiveness.

- Green Shell: A straight-firing projectile. Can be fired forward or backward. It bounces off walls, making it useful for hitting opponents around corners or in tight spaces. Practice aiming to hit distant targets or ricochet it for unexpected strikes.
- Red Shell: A homing projectile that locks onto the opponent directly in front of you. Can be fired forward or backward. Extremely effective for taking out leaders or catching up. However, it can be blocked by other items or environmental obstacles.
- Banana Peel: Can be dropped behind you or thrown forward. If a kart drives over it, they will spin out. Excellent for creating traps on tight turns, narrow passages, or just before item boxes. Dropping multiple bananas in a line can create a formidable barrier.
- Feather: Allows you to perform a high jump. Primarily used for taking shortcuts over small gaps or obstacles, or for dodging incoming projectiles. Mastering Feather shortcuts can shave off significant time on certain tracks.
- Fire Flower: Fires a stream of small fireballs forward. Each fireball can spin out an opponent or destroy breakable ice blocks on Vanilla Lake tracks. Useful for clearing a path through a group of racers or creating hazards.
Always consider your position and the track layout when deciding which offensive item to use. Sometimes holding onto an item for a better opportunity is more effective than immediate deployment.