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Auto Air Filters Kart Air Filters Economy Kart Filters Breather Filters

 

The HDM 2-Stage foam Karting filter outperforms the competition providing greater air flow and superior protection.

The principle of how foam air filters work is simple: "Open Cell" Polyurethane Foam is wetted with specially developed filter oil. The "sticky" filter oil is suspended in the path of the dirty air on the strands of the web-like cell structure of the foam. This makes it impossible for dirt to pass through the depth of the filter without sticking to the strands. As the outer strands become loaded with dirt particles, the wetted strands down stream start trapping dirt, allowing the entire thickness to be utilized. This prevents surface loading or air restriction for 80% of the service life of the air filter element. When the filter is sufficiently dirty, it can be easily washed, re-oiled, and re-used.

If you would like more information on foam air filters, please download Filter Information PDF file.

Before you say our price is too high, take into account that when you buy a normal filter for  $11 dollars, you still have to buy an outerwears™ for $8 or a foam pre-filter for around $6. With the HDM filter, you get the complete package and better protection.

Be sure to download and print the oiling instructions for the foam air filters.

(outerwears is registered trademark of the outerwears company inc.)

 

Throat Size Kart Filter

 

2 7/16" is used in WKA stock classes and is used on Clone engines, 1 1/4" is for use with the Animal Class.

 

5.5oz Can Uni filter Oil

 

 

HDM nor UNI will be held responsible for any engine failure due to improper or unapproved use of any UNI filter.

 News...

 

Spy Optics available online.

Thor Oil and Tire Prep now available.

Hyper Coil brand coil over springs are now available

Digatron Gauges and Instruments online ordering.

Rivets and Sheet Metal now available.

 

 

 Latest Updates...

HDM has added the following to our product line.

Karting Jackets

FSR Radiators

Racing gloves

Braces & Supports

Racing  Wheels

 

 

 

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