MX5 NA/NB Engine Undertray (RHD)

Jass Performance Full Aluminum Engine Undertray (Miata/MX5 NA/NB)

This Jass Performance Full Aluminum Engine Undertray is an enhanced component designed to improve engine cooling efficiency and reduce aerodynamic drag. It serves as a direct, functional upgrade to the factory plastic undertray. 

Technical Specifications & Performance Features

The undertray is engineered to optimize under-car airflow and provide robust physical protection:

Aerodynamics and Thermal Management

• Material: Constructed entirely from durable, lightweight Aluminum.
• Benefit: Drag Reduction: Minimizes air turbulence beneath the vehicle, which contributes to overall aerodynamic efficiency.

Durability and Protection

• Construction:Replaces the structurally fragile OEM plastic with high-strength aluminum plating.
  • Benefit: Component Safety: Provides superior mechanical protection for critical, low-mounted engine components

Fitment and Kit Contents

• Compatibility:Confirmed fitment for all Miata/MX5 NA (MK1) and NB/NBFL (MK2/MK2.5) models.
• NBFL Installation Note: On NBFL models, the component secures effectively using only the second row of factory bolting points, as the first row is not present on these chassis.
• Kit Contents: Supplied as a complete kit, including the main base panel, two supplementary side panels, and the necessary mounting hardware (fitting kit).