BULL BOOST PERFORMANCE Mazda Miata MX-5 Custom Ducktail Duckbill Trunk Spoiler Duckwing MK1 1990-1997

Part Number: 720595372107

Give your NA Miata a more aggressive rear-end appearance while improving high-speed stability with the BULL BOOST PERFORMANCE Ducktail Duckbill Trunk Spoiler. Designed specifically for the first-generation Mazda MX-5 Miata chassis, this spoiler features a taller outer edge profile and race-inspired ducktail shape for a cleaner aerodynamic flow.

Constructed from lightweight aluminum with a durable textured finish, this spoiler is ideal for street builds, track cars, drift setups, and show vehicles.

Features

• Aggressive ducktail / duckbill aerodynamic design
• Lightweight aluminum construction
• Durable textured powder-coated finish
• Improves rear-end airflow and stability
• Adjustable in/out mounting positioning
• Pre-drilled mounting holes for easier installation
• Hardware included for installation
• Great for street, track, drift, and show builds

Fitment

Compatible with:

• Mazda MX-5 Miata NA 1990-1997
• Mazda Roadster NA6 / NA8 1990-1997
• Eunos Roadster 1990-1997

Performance Benefits

The spoiler design features a shorter center section with taller side edges to help optimize airflow across the rear of the vehicle. Stability improvements may become noticeable around 60-75 MPH depending on vehicle setup and supporting aerodynamic modifications.

Package Includes

• (1) Aluminum Ducktail Spoiler
• Mounting hardware (rivets, bolts, nuts)

Installation Notes

• Adjustable mounting position allows fitment customization
• Rivnuts and jack nuts can also be used (not included)
• Professional installation recommended

Warranty & Liability

All warranties, claims, and product-related issues must be handled directly through BULL BOOST PERFORMANCE.