A fully functional diffuser for the ND Miata that reduces lift, reduces drag, and looks great too. We're big fans of aerodynamic parts that WORK, and Velox motorsports designed this unit in CFD specifically for the ND. If you're like us and want to geek out over all the technical details, you can view the full write-up at the link at the bottom of this page.

The unit is adjustable vertically to fit multiple aftermarket exhausts. Produced from aluminum, the unit can take quite a beating and still retain it's functionality and shape.

FITMENT NOTES: Fits with all of our RoadsterSport muffler options EXCEPT the Twin Tip Super Street. To fit this diffuser with the TTSS, you will need to add longer hardware with additional spacers to space the diffuser down enough to clear that muffler.

Construction:
5052 Aluminum
Durable black powder coat
Stainless hardware throughout
All brackets/hardware included for a full install

Design Features:
Organic Shape
Flat head riveted strakes (No rivet heads visible, flat bottom)
Simple Bolt on installation, no cutting required
Reduces drag
Significantly reduces lift

Please note fitment with Twin Exit Tail pipes may present an issue.

Installation Guide 

Link to CFD Data and Info