NB Diffusers

Upgrade the rear styling of your Mazda MX-5 Miata NB or NBFL with premium rear diffusers designed to give the second-generation Roadster a more aggressive and motorsport-inspired appearance. Whether you’re building a clean OEM+ street car or a track-focused project, a rear diffuser is one of the most effective ways to enhance the rear profile of your Miata.

Designed to complement the factory body lines, these diffusers help visually lower the rear bumper while adding a sportier and more purposeful look. From subtle styling upgrades to more aggressive aerodynamic designs, our collection includes options to suit every build style.

Manufactured from high-quality fiberglass and carbon fiber, our diffusers offer lightweight construction, durability, and excellent fitment for NB and NBFL models.

Shop Diffusers & Rear Aero

• Rear Diffusers
• Rear Undertrays
• Rear Spats
• Rear Canards
• Carbon Fiber Diffusers
• Fiberglass Diffusers
• OEM+ Aero Upgrades
• Track-Inspired Rear Aero Components

Why Choose Our NB Diffusers?

• Designed specifically for Mazda MX-5 Miata NB and NBFL models
• OEM+ and motorsport-inspired styling options
• Available in fiberglass and carbon fiber
• Lightweight and durable construction
• Excellent fitment and finish
• Ideal for street, show, and track builds

Whether you’re looking to complete a subtle exterior upgrade or create a more aggressive rear-end appearance, our NB diffuser collection helps your Miata stand out while staying true to its lightweight sports car heritage.

Compatible with Mazda MX-5 Miata NB (1998–2000) and NBFL (2001–2005) models.