K&N's custom air cleaner assemblies are designed with the racer in mind. They incorporate good looks as well as the superior air flow that you expect from K&N. These custom air cleaner assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide more air flow than other assemblies of this type. Available in 4 different designs, the perfect assembly is sure to be found here. Each complete assembly comes with base, element, and top plate.
14 & 16 Inch Assemblies
11 Inch Assemblies
9 Inch Assemblies
Custom 66 Assemblies
7 Inch Assemblies
Custom Lids and Base Plates
Custom Assemblies with Carburetor Applications
4 inch Nostalgia Engine Assemblies
XStream Custom Assemblies
Flow Control Air Filter Assemblies
These filters are legal ONLY for racing vehicles. Not applicable, nor intended for use on emission controlled street or highway vehicles.