991.1/991.2 GT3, GT3RS, 911R, Cup,



I have done a couple track days so far and car is definitely faster, I feel the power and torque mainly in the mid range, sounds great too. read more

Alex, Australia
GT4 Race Headers

Dual Reverse Cone Airbox 991 RS


Click on a photo to enlarge.

Dual Reverse Cone Airbox for 991 RS

Stock Filter Area :1.77 ft2

Reverse Dual Cone Filter Area: 6.25 ft2

353% more than stock.


More filter area means slower air speeds through the filters and less pressure drop across the 



ACE Performance from Tewksberry, MA
Fitment and detailed instructions were excellent. The R&D that has gone into this product as well as the support are second to none. We are proud to be a dealer and install center of these awesome products.

The sound of the airbox coupled with headers makes the GT3 RS sound incredible and the power gain throughout the RPM range is noticeable.

Michael from West Linn, OR
The torque increase exiting corners and down long straights is impressive. I’m so happy I decided on this modification.

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