Rear Diffuser - WRX/STI Sedan (GV)

747.95 679.95 679.95 USD


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The Verus Engineering Rear Diffuser combines function, form, and science to deliver unparalleled fit, performance, and style to your GV Sedan.

Utilizing state-of-the-art analysis software during the R&D process, we were able to extract more performance for the given build volume; increasing downforce generated and drag reduced from the addition of the rear diffuser to the GV chassis.

During the design process; we utilized in-house scan data.  This results in a product that features a near OEM fit and finish.

The Rear Diffuser was designed for owners looking for function and form; specifically with a non-aggressive strake design to give a subtle and clean rear-end look to your sedan.


  • Rear Diffuser

  • Rear Diffuser Bracket (5)

  • Rear Diffuser Outer Strake (2)

  • Hardware Kit, Includes All Necessary Components for a Seamless Install



 Reduce Drag

Reduce Lift (Increase Downforce)

Improved Overall Aerodynamic Efficiency (Improved L/D)

Increase Tire Grip at Speed

Simple, Non-Invasive, Bolt-on Design


  CFD Optimized Design

5052-H32 Sheet Aluminum Composition

CNC Laser Cut

CNC Press Brake Bent

Powder-coated Low Gloss Textured Black

Stainless Hardware Throughout

Unique Strake-to-Mainplane Construction

Made in the U.S.A.




The Verus Engineering Ventus 1 package decreases the overall lift and reduces the drag of the GV WRX/STI.  The components end up improving the aerodynamic efficiency of the vehicle as a result. The diffuser helped create vortices that keep flow attached to the diffuser surface. The diffuser creates a low-pressure zone in the rear while the splitter creates a low-pressure zone in the front. This equates to a well-proportioned aerodynamic balance for the WRX/STI.

The Verus Engineering Ventus 1 package helps your WRX/STI get more from the tires at the track and also increase gas mileage on a daily driver. The rear diffuser in the Ventus 1 package is a great addition to both daily drivers and track addicts alike.  If you are looking for more downforce and speed, check out one of our other Ventus kits which increases downforce further!




Install Manual

Informative Packet