K&N 56-9121 Custom Racing Assembly BOLT-ON UNIT ymm_84 and features ultra-smooth mandrel bends

and features ultra-smooth mandrel bends for maximum flow and power

considerably lighter than the factory system as well as its stainless steel counterpart

This Axle-Back system delivers the classic S-Type sound with no drone inside the vehicle

and K cars

K&N 56-9121 Custom Racing Assembly BOLT-ON UNIT ymm_84 and features ultra-smooth mandrel bendsDescription K&N 56 9121 Custom Racing Assembly BOLT ON UNIT K&N Custom Air Filters for single or two barrel carburetors are designed to boost performance while keeping dirt out. These assemblies include custom chrome top and base plates along with the K&N High Flow Washable Air Filter. The filter is engineered to increase horsepower and acceleration. It features a show quality chrome finish and is both washable and reusable, providing high airflow