• Fits 2002-2005 NSX
  • Model available for 1991-2001 model NSX if you have the updated 02+ Style Rear Valence
  • Compatible with most exhaust systems
  • 15 Minute installation
  • Built from Aircraft-grade Aluminum and Powdercoated Satin Black
  • Weighs only 11LBS (5.5KG)
  • Handles curb rash and track abuse like a champ!
  • FAQ about this diffuser
  • Most functional rear diffuser on the market for NSX


NOTICE: The '91-'01 version of the Railer Rear Diffuser for Acura NSX is approximately 1.5" narrower on either side than the '02+ Railer Rear Diffuser for Acura NSX. If you would like the wider version, please order for the '02+ NSX and expect to need slight modification for proper fitment!


The 5-Element Railer for NSX attaches to your cross bar between the rear wheels. Butts up against your rear valence and clips/screws hold it into place. Gives your NSX an aggressive look from the rear and helps airflow. Diffuser rests approximately 4 inches off the ground at its lowest point.

5-Element Railer Rear Diffuser for Acura NSX

Color: Satin Black Powdercoat
  • Weight: 11 LBS

    Cutting/Drilling Required: None

    Compatibility: 2002-2005. Will fit 1991-2001 with Updated 02+ Style Rear Valence.

    Description: Give your NSX that up to date look with our aggressive 5-Element Railer diffuser! It's street friendly and the body of the diffuser extends all the way up to the rear frame. The diffuser also fits on the 1991-2001 NSX if you have the updated rear valence from Downforce, Seibon, or Acura!


Phone: (423) 834-5020


Mon - Fri: 11AM-5PM EST


We'll give you the best customer service in the industry! For questions about our products, just call, text or email and we'll get back to you within 1 Business Day!


We design high-quality, durable aerodynamic products and manufacture all of our products from aircraft-grade aluminum, then they're powder coated or wrapped for a premium build that is more robust and will endure a longer life than products from our competition!


All of our products are engineered and manufactured in the United States! We strive to maintain the best quality product on the market!

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