Air filters manufactured by HiFlo have been specially developed for modern "high performance" engines and adapted to the original air filter box.

The air filter is a direct replacement to the OE filter usually at a fraction of the cost.

 

There is no need to make any adjustments to the carb(s) with this air filter.

To protect your engine from dirt and debris only high quality materials are used, cheaper air filters on the market are generally less efficient at filtering the incoming air. 

There is also risk that on modern high performance engines cheaper filters can disintegrate due to the pressure created during induction, foam and paper filter material is often split open rendering your filter useless.