X-celeration is much quicker, smoother and stronger Dyno-designed "AirLoad" manifolds reduce turbulence and increase air intake velocity, boosting horsepower and torque Custom-made AirRaid cleanable, reusable air filter provides increased airflow volume to the engine Kit replaces the stock air cleaner assembly, maintaining balance and symmetry Includes instructions and all necessary hardware 3-D mesh "X" Cover is beautifully stylized Machined from 6061 T-6 billet aluminum Made in the U.S.A.. AIR CLEANER XXX VN900 BK