We use R2C filters on our cars because they eliminated the issues we had with dirt on the air cleaner base, in the carburetor and in our engines.  R2C filters are also easy to maintain. We can blow them out at the track and they're ready to go. No more filter oiling to deal with. 

Billy Moyer and Billy Moyer Jr.
Billy Moyer Racing

Dirt Late Model Air Filters

Dirt  Late Model Air Filter
Pro Series Late Model Filter

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This is what occurs when using a paper or gauze filter not designed for high volume Late Model and Modified applications

Filter Testing 009 

Oiled Gauze Filter testing  

Paper filter testing

 Paper Filter Testing

Super Late Model Race Filter 1200 SCFM

R2C Late Model Filter Testing - 1000 CFM ISO 5011 Fine Dust 


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 washing  unnecessary to restore filter performance.

R2C Pro Series 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.

CONTACT US: 847-970-9566







The #1 Air Filters in Dirt Car Racing!




Why do more successful Dirt Late Model and Modified teams rely on R2C race air filters than the others combined?


Because R2C Pro Series filters make more power while keeping engines spotless!   Plus maintenance is quick and easy.


In an effort to field a competitive race car, there's just too much to do other than to worry about air filter performance. Top teams rely on R2C race filters for maximum performance, not only at the start of the night, but throughout the race all the way to the checkered flag. No filter made today keeps engines cleaner and allows carburetors to remain dirt free, maintaining precision performance, maximum power and unmatched throttle response.
You need the filter fresh for the feature?  That's easy. Just use compressed air from inside-out and filter performance is restored to new levels time after time. No need to fool around with spraying glue on a filter in hopes of stopping dirt while driving in-race restriction through the roof. No longer is wasting money replacing loaded paper filters each night necessary.
No race filter today can deliver the performance and engine protection that top teams get from R2C. No filter can match the value R2C filters provide savvy racers either.
Other racers will know that you're serious about what you do and that you demand the best from your equipment when they see your engine equipped with the finest race filters ever designed for dirt cars.
Stop asking street filters to do a job they were never designed for. Stop accepting dirt on your air cleaner base and on your carburetor boosters and bleeds. Get an R2C filter and watch it work. You'll never use anything else!



Pro Series 2000 CFM Dirt Late Model Race Air Filters

  1. Maximum Fine Dirt Stopping Ability to .3 Microns - No dust on the air cleaner base or in the carburetor.
  2. 2000 CFM flow provides unmatched Horsepower and Torque when clean and when dirty
  3. Even easier to clean using compressed air. Washable too!
  4. Engine oil analysis indicates the lowest amount of dust ever recorded. Protect your investment!
  5. The best dirt car air filter ever made is also the least expensive!  Less than $2.00 per race!


R2C makes the best and only air filters specifically designed for the demands of Dirt Late Model racing! 

Nothing stops dirt and makes power better than an R2C Late Model air filter.  

Anything else is just a street car filter!




Filter Application Guide

The only performance air filters specifically designed for the demands of large displacement, high RPM Late Model and Modified engines.  Maximum power for 602 and 604 crate engine racers too!

Ater extensive track and lab air flow evaluation, our engineers have created an exclusive 2000 CFM competition air filter design that provides the finest distribution profile over the base radius. R2C patent-pending and proprietary air filters feature an offset media that significantly improves air flow in high demand applications.

R2C advanced high performance air filter technology provides that deep, flag-to-flag power while also providing unmatched engine protection. R2C filters help race teams maintain the best leak down numbers, eliminate unnecessary cylinder wall and combustion chamber wear and also prevent engine oil breakdown caused by particulate ingestion.

*While not often necessary due to the effective nature of compressed air cleaning from inside-out, R2C filters are washable using spray-on or by soaking in biodegradable cleaners such as Simple Green, etc., R2C Dirt Late Model synthetic air filters are cleaned trackside with low pressure compressed air and are the longest lasting filters in the business! Teams can remove the air filter, blow it clean from the inside surfaces using 40-60 PSI compressed air and have it race-ready over and over again in minutes! No more solvent cleaning, drying and oiling hassles!  If you haven't tried an R2C High Performance Air Filter, we encourage you to do so. We guarantee it will exceed your expectations!


*R2C does not recommend using an air cleaner lid with filter media incorporated into it.   There are multiple reasons to avoid  this configuration   including disturbing the booster signal.


Avoid using 3" filter heights on Late Model and Modified engines.  These filters are too small and will affect performance as dust loading occurs.


Pit and Engine Tuning Filters

Protect your engine and carburetor while working in the pits or heading to the scales/tech.  Convenient, one-piece unit attaches directly to the carburetor.

 CF10506 (2)Pit Filter image

CF10506- 4412 Applications With Offset Stud                       

CF10500 - Holley 4 Barrel Applications                                                                                      

CF10501 - Braswell 5 5/8" Flange Applications



  • FilterGard  Pre-Filters
  • R10522 14" x 4"           Pre-Filter  R2C0210A1
  • R10523 14" x 5"           Pre-Filter  R2C0210A2
  • R10523 14" x 6"           Pre-Filter  R2C0210A24
  • Additional sizes available.



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