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..