The O2Rush air Filter has been designed to provide the ultimate in performance, without putting your motor at risk of dust and dirt.Made with a Single layer of open cell, polyurethane air Filter Foam with external corruga-tions for over 100% larger surface area. The Foam is over 14mm thick (more than double the effective Filter medium of some competitors), yet still remains free flowing and, cou-ple with our ‘soft-seal’ Technology, ensures no dirt will penetrate.O2Rush ‘Race Ready’ is a select range of high-performance O2Rush, Single Stage air Filters supplied pre-oiled and Race Ready.Made in Australia