For many years, Twin Air Factory Pre-Oiled filters were only available to the top professional race teams. The results were so good that we now offer the same factory treatment to everyone.
We start with an Original Dual-Stage Air Filter and completely submerge it in BIO Liquid Power Filter Oil. After the filter is massaged to ensure all pores are evenly coated with oil, it‰Ûªs placed in a temperature-controlled room to allow the oil to completely cure. You just open the resealable bag and install.