Project FR-S, Improving the Aero Balance with Verus Engineering and Victory Function

Next, the mounting holes were drilled.

Now the mounting bolts could be attached by lifting the wheel well liner and holding the nuts from the inside.  The Varus canards are quite attractive and complement the rest of the cars front carbon nicely.

The canards are not nearly cosmetic items placed randomly on the front of the car for looks like most aftermarket body kit parts. Their shape and the mounting location were designed using CFD analysis.  The canards create Newtonian downforce by having a high-pressure zone on top and a low-pressure zone underneath them.  They also serve as vortex generators by creating a vortex along the top of the fender line.  This prevents air from curling off the fenders and creates a lower pressure around the front wheels, reducing wheelwell pressure and lift.

We also replaced the annoying side marker lights with these Verus Engineering carbon fiber block-off plates.  The OEM lights are held on with flimsy clips which break or have the tabs round off so they constantly fall out.  The Verus parts bolt in and will not come loose unless you have other serious problems!


  1. Those wheel well deflectors are interesting. I often see people adding a splitter ramp in that area. Those two things seem like they would have the opposite effects. Any reason to use one vs. the other?

  2. The fender blades look gtr’ish, no? Something I’ve always wondered about carbon fiber is this. Back in the 80s all bikes with aluminium frames we’re bare aluminum to show it off. After some time, the manufacturers painted the frames as people just knew most performance bikes were aluminum framed. When do you think this will happen to cf?

    Awesome content as always

  3. WHELL WELL AIR DEFLECTORS! For years I have been wondering what those are and what they do. I bought an E36 M3 years back that came with those from the factory and one had been ripped off sometime before I bought the car. No matter what I typed into google, I could never figure out what they are for. Thank you so much for answering this long nagging question of mine.

  4. These are significantly important low buck mods that should be done before any dramatic aero is done. It’s interesting how much the sound of the vehicle at high speed changes, with these slats, blades, and flaps installed.

    On older cars, I always make a point to install slats ahead of tires and wheel wells, but they do easily get ripped off, usually by an aggressive speed bump.

    The most modern bumpers create ‘air curtains’ around the tires, but of course, that requires a specific type of ‘nozzle’ and ducting which is very difficult to retrofit onto older vehicles.

    From what I know about most canards, it’s the way the vortex interacts with the turbulence coming from the tire and the wheel well that makes them effective. When they are attached to a splitter the vortex can act like a ‘virtual’ side skirt and prevent air from coming under the car disturbing the flow on a flat floor. Sometimes you will see them blended into the bodywork ahead of the rear wheel well, too, to keep a rear diffuser functioning. Ferrari does this on some of their cars.

    Of course, if you can capitalize off of any CFD done on your specific car shape, or wind tunnel time, that would be ideal.

    I kind of wish manufacturers would release that data to the public so people could be more informed when they do modifications, but I won’t hold my breath waiting for that to happen. Fortunately, the GR86 is popular enough that you can use that CFD data as a good reference.

    All this stuff is what makes me think that the era of the HUGE REAR WING is finally over. I have always thought that a really nice duckbill rear spoiler with a rear diffuser just looks so much better while generating enough downforce for a road car.

    1. A wing is way more effective than a duck bill that might live in a separated or partially separated flow.

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