Round Racing and Universal Clamp-on Filters

aFe offers a variety of filters for the racing enthusiast.  These filters are not made with a particular vehicle application in mind.  They are sized and shaped to the various performance requirements of various types of racers out there.  Whether you are a circle track racer, shifter kart racer, off road dirt racer or simply someone who want to put something unique together just for your vehicle, we have a size and shape for you. 

Round Racing Filter

We have universal round filters for your carbureted racing engine in different diameters and heights.  Diameters range from 9" to 16" with height ranging from 2" to 10".  Some of these filters have expanded metal mesh for greater structural integrity. 

Like all our filters, these filters are made with the deepest pleats possible using 100% engineering grade polyurethane.  The top and bottom urethane rings have a bump seal that insures tight, dust free seating to whatever dish you might use.

Hot Rod Magazine did a comparison of 14" round filters that showed that our filters out-flowed all our competitors.  

To go with our universal round filters, we offer a standard 7/8" drop chrome top and pan that you can buy together as an assembly or separately. 

TOP Racer Round Racing Filter

For these same racers with carbureted engine, we have developed with something so new that we've applied for a patent.  TOP stands for The One Piece.  If you look at this drawing, you can see why we named it that way. 

The top portion of the filter is molded together with the side portion to make one huge air filter.   Notice the metal rib that is molded into the underbelly so that it is more rigid. 

There are other filters like this on the market but they consist of a side filter and a top.  The problem with this design is that  the top, side and separate, let a lot of dirt get into the motor.  The last thing you want when you in the middle of a competitive race is to get a DNF because of a blown engine due to dirt. With TOP (The One Piece) Racer, you don't have to worry about this happening. 

The air flow chart that shows how our 14" x 3" TOP Racer compared to our competitors two-piece filters. Currently we offer these TOP Racers in 3 heights: 3", 4", 5" in the most common diameter used by racers, 14" . 

Universal clamp-on (UCO) Filters

With fuel injected engines, you will not be able to use the universal round filters.  Not to worry.  We offer a full line of universal clamp-on filters as well.   Many of these are the same filters that we use on our own intake systems. Internal flange diameter sizes range from the smallest 2 1/4" flange ID to 6" flange ID.  Overall heights range from 5" to a very tall 14". 

We also offer full range of inverted top universal clamp-on filters. 

All our universal clamp-on filters feature 100% engineering grade polyurethane that insures flexible, tight seal to any diameter tube you want to put these on.  For additional insurance against any possibility of leakage, we have designed small ridges into the flange.

Another feature that we design into our universal clamp-on filters is either a full-velocity stack that you see here or a modified velocity stack which is a straight 45degree angle cut.  These velocity stack allow the air to smoothly bend around the inlet into the throttle.  The result is that you get more airflow at a better velocity than if you had just a straight tube. 

Crankcase Vent Breathers

The smallest of our racing filters are the crankcase vent breathers.  These range in size from a .31 inch flange ID to 1.5" ID.  Height range from 1.13" to 3".  Since these are generally used right up against the crankcase, some of these breathers have a chrome shield to protect the filter from the heat.