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Purchase Window Triangle Trim - Wind Diffuser
  • Window Triangle Trim - Wind Diffuser SKU: PK9X1MIRROR

    ★★★★★ ★★★★★ 4.45/5 Stars. (20 Reviews)
  • MSRP $83.16 $79.95


You know that sound that happens when your window is down at speed that makes it feel like your head is going to implode? That’s called wind buffeting. It happens when you’re moving fast, and it’s quite the issue on the newest generation of Porsche Boxster, Cayman, and 911 Carrera models.

Made by AWE Tuning, this diffuser boasts an unobtrusive yet elegant design. Crafted from UV stabilized injection-molded plastic, it complements Porsche styling without calling unwanted attention. Once installed, driving with the windows open will be more comfortable and more quiet. A simple solution to a common gripe among Porsche owners.


  • Simple, quick installation for late production 981, 991, and 718 models for earlier production please see install guide first.
  • The elegant solution for Porsche 981, 991, & 718 wind buffeting
  • UV stabilized injection-molded plastic for the perfect OE-style look
  • Combats buffeting, both on the track and on the street
  • Allows for "single window" down driving without buffeting
  • Perfect OE-like fitment
  • Fits Coupe, Cabriolet and Targa models
  • Includes driver’s side and passenger side fitment

  • Fits all 2013-2019 911 Carrera models (including Turbo & GT3), and 2013-2021 Boxster & Cayman models.

    Currently Viewing Reviews with a rating of 5. Click here to reset.
    ★★★★★ ★★★★★
    4.45/5 Stars out of 20 Reviews
    Pages 1   2
    They really do work
    (North Bethesda, MD) | October 30th, 2020
    Completely worth the price, they almost completely remove all buffeting at any speed when the passenger window is closed and the driver's window is open. Unless you have a very early 981, the install takes 5-10 minutes per side, and if you do it right, anyone will think they are OEM. Too bad Porsche doesn't install them from the factory.
    They really do work
    (Lexington Ky) | October 17th, 2020
    I know what your thinking $80 for two pieces of plastic, but I can tell you they really do work. If you want to get rid of the wind buffeting and drive with one or two windows open at any speed this is the only way to do it. I have a 991.1 and before the wind diffusers I needed to open the sunroof with the windows open. They fit well also.
    (Tampa) | July 28th, 2020
    I was a bit skeptical. However, it works well. Easy install. It should be a factory OEM option. When I track my 991.2 GT3 they require windows down. The buffeting was intolerable until now. Highly recommend.
    They work
    (NC) | July 3rd, 2020
    Installation easy. Passenger side fits good but not as well as the driver's side. Cuts out wind issues especially at HPDE events.
    window down adventures
    (Denton, TX) | May 10th, 2019
    Excellent product. reduces the sound buffer tremendously almost to zero for my 2014 Cayman S. keep in mind as mentioned 20013-2014 models is not a DUI unless you are a pro, got it done from my indy shop.
    (Texas) | April 27th, 2018
    It took me awhile, but finally installed them. Wow, what a difference. Was just driving on the freeway with the windows down, it's awesome.
    Just buy it
    (Phoenix, AZ, USA) | March 5th, 2018
    after experiencing the wind baffling when driving at 45-55mph with the driver side window down, the wind diffuser now has a smooth flow of are around the drivers window up well pass 55mph. I can now drive with the window down and enjoy the weather and sounds. Looks like like factory and installed in less than 10 min with basic tools.
    Great Upgrade
    (Annapolis, MD) | November 28th, 2017
    Great upgrade! Installed on my GT4 in about 10 minutes for each side. Can drive at 75 with passenger window up and no buffeting. Significantly reduced buffeting on the track. I damage the passenger side when installing. Called the manufacturer, sent them a picture and two days later a new one was delivered. Great service!
    My fault, connectors missed
    (Seoul, Korea) | August 13th, 2017
    I purchased a mirror on June 22, 2017. I tried to install it recently, but I found out that the connectors (4 connectors for connecting to 911) were missing. If you don't mind, can I buy only four connectors in the picture?
    Wind Buffeting Decreasede
    (indio, CA) | June 21st, 2017
    Installed this item two days ago. I was a little hesitant at first as I am not the most mechanical inclined individual, but I can follow directions. Twenty minutes and was done. Looks great and works even better. Love driving with the windows down and hear the tunes.

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    Window Triangle Trim - Wind Diffuser
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