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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  • Fits 2009-2017 Nissan GT-R (Specify Below)
  • Comes with 5 Fins, support rails and all necessary hardware
  • Attach to your existing OEM undertray
  • Built from Aircraft-Grade Aluminum and wrapped in Carbon-Fiber Style 3M Vinyl
  • Choose from Matte or Glossy Carbon-Fiber Style 3M Vinyl
  • FAQ about these fins
  • Tested at 175 MPH. Diffuser fins are very durable and do not wobble or bend


These fins attach to your existing carbon fiber undertray. Fins help channel high-pressure air from front to rear properly, reducing drag and in return, improving your lap time. Choose from 4.5" fin depth, up to 6.0" fin depth. 4.5" is recommended for street use, and 6.0" is recommended for track use.

Diffuser Fins for Nissan GT-R

Fin Depth
Fin Style
Fin Finish
  • Weight: 7LBS

    Cutting/Drilling: Modifications to Factory Undertray Required

    Compatibility: 2012-2017 (DBA & EBA) GT-R and 2009-2011 (CBA) GT-R

    Description: Unbolt your OEM undertray. Attach the 5 Fins with our supplied rails and screws. The fins are made from very strong aluminum and wrapped in Carbon-Fiber Style 3M Vinyl. These fins can take a beating. His a speedbump? No worries. Tested at 175MPH. Very high quality.