Free up power and add some beauty to your engine bay with the Dundon Motorsports Carbon Fiber Dual Cone Airbox. On a stock car this airbox will free up about 5-7whp. On a Dundon Resonance Intake equipped car, this airbox is good for about 8-10 whp!




Dundon Motorsports stands behind our products with a 30-day love it guarantee. We are confident in the quality and performance of their upgrades, but if for any reason they don't meet your standards or help you push your performance on track, you can send them back within 30 days.
Some products are built locally and made to order. Typical lead time for welded components (mufflers, headers) is about 7 business days after purchase. In rare cases timelines may change—we’ll notify you by phone.
Free up power and add some beauty to your engine bay with the Dundon Motorsports Carbon Fiber Dual Cone Airbox. On a stock car this airbox will free up about 5-7whp. On a Dundon Resonance Intake equipped car, this airbox is good for about 8-10 whp!

We based this design on the fabled 997 4.0L GT3RS. It features dual conical air filters from the 4.0RS. In order for you to keep your stock decklid we created a balance pipe in the bottom area of the airbox to allow air to flow to both filters equally.
Note Fan Part 997.624.056.05 is required for fitment on cars with the original fan (most of them have been replaced by 997.624.056.05 by now...) If you need to source it or are unsure, you can order our option that includes a new fan slim line decklid fan from Porsche
Below is the OE fan the car came with.
Below is the upgraded thin line fan:
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