K&N Custom Racing Air Filter - Rectangular Carbon Fiber 4in Air Box w/

Light Weight Yet Durable, K&Amp;N'S Generation 2 Carbon Fiber Air Boxes Are A Must For Any Racer Currently Using Traditional Multi-Siamese Stacks. Constructed From Ultra-Lightweight Carbon Fiber These Filters Provide Ample Air Flow For Your Racing Needs. They Come With Air Horn Seals To Provide Better Sealing And Easy Installation. As With All K&Amp;N Air Filters, Generation 2 Carbon Fiber Air Boxes Are Washable And Reusable. Simply Use K&Amp;N Cleaner And Oil To Service Your Filter.