"I used to go about a half a season and the bottom of my intake plenum would have dirt or basically just a mud consistency on the bottom and down the runners.  I was using K/N type oiled filters that need to be washed and re-oiled with dirt still getting through filter which created blow-by and rebuilds more frequently. My motor builder kept asking me if was cleaning my filter out enough. I then talked to you and tried your filter and it worked just like you said. I did not need any grease around the seal area of filter. I have used your filter for a full season and washed it multiple times throughout the season it has held up great.  I looked at my motors intake plenum at the end of this season with your filter and it was completely clean!  Your product works exceptional, it works just like you guys at R2C said it would! 

Ray Bollinger

Drag Racing Air Filter




Washing Filters:

R2C filters feature a specially designed media that allows performance and efficiency to be restored to near new each time by simply using compressed air from inside out, making frequent washing unnecessary in order to restore filter performance.

R2C Drag Race filters feature a media that is fully compatible with washing.  Biodegradable cleaners such as Simple Green or other mild shop degreasers can be used. Simply place the filter in a light solution or spray the cleaner on the filter. Allow the solution to loosen the particulate and then rinse thoroughly. Shake the filter or use compressed air from the inside outward to remove residual water and allow a full day or two to dry. While the media may discolor and become light gray, filter efficiency and restriction are not affected.

* Follow the dilution and application time instructions for light cleaning as indicated by the cleaner manufacturer.



     Blach Hex Filter  

The most powerful air filters in the world!



Black Hex Series Race Air Filters are designed to provide the lowest restriction and maximum horsepower while protecting your engine from particulate and debris.

  •  The most powerful air filters available today!  40% More Air Flow than the next leading filter.
  • 14" x 2 1/2"  Round Street/Race Series Air Filter SSR10646
  • 14" x 3"         Round Street/Race Series Air Filter SSR10600B
  • 14' x 3 1/2"    Round Street/Race Series Air Filter SSR10643B
  • 14" x 3 3/4"   Round Street/Race Series Air Filter SSR10644B
  • 14" x 4"         Round Street/Race Series Air Filter SSR10601B
  • 14" x 5"         Round Street/Race Series Air Filter SSR10602B
  • 14" x 6"         Round Street/Race Series Air Filter SSR10604B
  • 14" x 5"         Round Street/Race Series Offset Media R10531B  (maximum power when used with drop base)

    11" Diameter Filters available






Drag race flow director

New CFD Flow Directors for Holley 4150 applications.



Contact us at racing@r2cperformance.com with questions or for help selecting of the best performing products for your application.


Black Hex Series Drag Race Air Filters



The highest flowing Drag Race air filters you can buy!


Over a year of development on the track and the dyno has culminated in the release of the most significant media technology ever created for high powered applications such as race cars, high demand street applications and those that utilize turbochargers, as well as diesel racing vehicles.

While providing good protection from particulate, R2C "Black Hex Series"  filters for race and hot street performance vehicles offer flow rates unmatched by any filter in use today.  Black Hex Series race filters offer flow increases of over 40% when compared to the highest flowing filter offered by any competitor. 


Stop Racing Without a Filter because of concerns you'll slow down!


  Black Hex Series Drag Race air filters:

  • Ultra Low Restriction for maximum horsepower - 1600-3630 CFM - 40% better than the next leading filter!
  • Protect Your Engine - eliminate the dust that effects carburetor performance and causes engine wear
  • Simple Maintenance - Compressed air trackside air filter maintenance
  • No Oiling!
  • Long lasting - maximum performance season after season!

1606 HP dyno test - Identical performance when comparing a single Black Hex conical filter to running with no filter at all.

 Try that with any other filter made today!


No longer is it necessary to compromise filter efficiency and engine protection in an effort to gain very low restriction and improved performance in Drag Race applications. R2C Black Hex Series Drag Race Air Filters offer racers the lowest restriction levels and maximum horsepower over the life of the air filter while dramatically improving engine protection. Plus, the mess and inconsistency associated with regular filter oiling and harsh solvent cleaning has been eliminated.  While fully washable using biodegradable cleaners, R2C performance air filter maintenance is simple using low pressure compressed air directed from the inside surfaces outward and the filters are race-ready over and over again.

Stop relying on poor performing gauze filters.  21st century filter media technology has evolved to provide performance levels most thought were unatainable even 5 years ago!  If you race without a filter because that's just the way you've done things, we understand.  If you currently use a filter and believe using one improves the condition of cylinder walls, intake valves and keeps engine oil cleaner, you have got to try Black Hex!  It's just faster.

It's guaranteed to be the best race filter you'll ever use!

Attention: Turbocharged, Injected Cars, Camaro, Mustangs, etc.


Go faster.......Guaranteed!


Black Hex Series drag race conical filters provide the highest level of race filter technology for unmatched performance.   Available in outlets to 6".

Advanced Performance media configuration provides Unmatched flow capability.  computer designed venturi outlet shapes maximize power.

Black Hex filters eliminate collapse under high boost!


Contact us for Private Label conical filters.

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