Kart customization is a deep and rewarding aspect of Mario Kart World, allowing you to fine-tune your vehicle's performance to match your preferred racing style and the demands of specific tracks. You can mix and match three primary components: the Body, Tires, and Glider. Each part contributes to your overall kart's stats, influencing Speed, Acceleration, Weight, Handling, and Traction.

Customization Components:
- Body: The main chassis of your kart. Different bodies offer varying stat bonuses. For example, the Standard Kart is balanced, while the Mach 8 might boost speed, and the Biddybuggy could enhance acceleration and handling.
- Tires: Crucial for traction and handling. Slick Tires offer high speed but poor off-road performance, while Off-Road Tires excel on rough terrain but might sacrifice some top speed. Roller Tires are known for their excellent acceleration.
- Glider: Primarily affects your aerial handling and how long you can stay airborne. Some gliders, like the Cloud Glider, offer better handling, while others, like the Wario Wing, might provide a slight speed boost.
Experimentation is key! Try different combinations to see what works best for you. A heavy character with a high-speed body and slick tires might be unbeatable on a straightaway, but struggle on a twisty course. Conversely, a light character with an acceleration-focused body and roller tires could dominate technical tracks. Unlocking new parts is often tied to collecting coins during races or completing specific challenges.