Now the Official Filter of the Lucas MLRA series. R2C Performance 14” Round High Performance/Competition Series Filters - Offering uncompromising performance and unmatched engine protection in high performance street or race applications, the R2C 14” round filters deliver the lowest restriction levels and most horsepower over the entire life of the filter. Patent pending and proprietary R2C PowerFlow technology finally ends the reliance on poor performing cotton gauze filters. Save money and buy a kit! Kits include a R2C Air Filter and an Outerwear R2C Pre Filter!