rear undertray

A **rear undertray** is a panel or cover mounted underneath the rear section of a vehicle. It serves to:

- **Improve aerodynamics** by smoothing airflow under the car, reducing drag and lift.
- **Enhance downforce** (especially in performance vehicles) by directing air toward a rear diffuser.
- **Protect components** such as the exhaust system, suspension parts, and fuel tank from debris and road damage.

Rear undertrays are commonly found on sports cars, race cars, and modern vehicles designed for improved aerodynamic efficiency.