This is the two-stage air filter foam from Ultimate Racing, specially designed for the Losi 8IGHT and Serpent S811 Cobra filters. The combination of this two-stage filter foam with Ultimate Racing filter oil ensures maximum airflow while providing excellent filtration and protection for your engine. Available in economical packs of 6 and 12 units, un-oiled and packaged in two airtight plastic bags to keep them in perfect condition and ready to use when you need them. Filter oil not included.





































