NA Diffusers

Upgrade the rear styling of your Mazda Miata MX-5 NA with premium rear diffusers designed to give the first-generation Roadster a more aggressive and motorsport-inspired appearance. From subtle OEM+ designs to track-focused aero styling, these diffusers help visually lower the rear bumper while enhancing the overall stance of your Miata.

Perfect for street builds, JDM-inspired projects, and track-oriented setups, rear diffusers pair seamlessly with ducktail spoilers, side skirts, and front lips for a complete aero package.

Compatible with:

• Mazda Miata NA6
• Mazda Miata NA8
• Eunos Roadster
• MX-5 Mk1 (1989–1997)

Popular Styles

• Rear Under Diffusers
• Diffusers with Fins
• Carbon Fiber Diffusers
• OEM+ Rear Aero
• Track-Inspired Rear Styling

Why Upgrade Your NA Miata Diffuser?

Rear diffusers are one of the best ways to modernize the rear profile of the NA Miata while maintaining its lightweight sports car character. They create a lower, wider, and more aggressive appearance that complements both OEM+ and widebody builds.

Perfect for:

• JDM styling
• Aero builds
• Street cars
• Track-inspired projects
• Carbon fiber upgrades

Premium Materials & Construction

Available materials include:

• Fiberglass (FRP)
• Carbon Fiber (CF)

Carbon fiber versions are manufactured using premium 3K Carbon Fiber 1×1 twill weave with vacuum bag technology for excellent rigidity, lightweight construction, and premium finish quality.

Features include:

• UV-resistant gloss clear coating
• Lightweight composite construction
• High-strength materials
• Precise fitment

Frequently Asked Questions

Do these diffusers fit both NA6 and NA8 models?

Yes, most rear diffusers are compatible with both NA6 and NA8 models unless otherwise specified.

Do fiberglass diffusers require paint?

Yes, fiberglass parts are supplied unfinished and require sanding, primer, and paint before installation.

Are carbon fiber diffusers UV protected?

Yes, carbon fiber products feature anti-UV gloss clear coating for long-lasting protection and shine.

Is professional installation recommended?

Yes, professional installation is recommended for best fitment and alignment.