The Type 296 Silencer is a quiet spark arrestor that should be used when riding in noise sensitive areas or any National Forest, U.S. Forest Service approved and will reduce your bike’s noise level at or near 96dB on most models, Internal metal baffle, chambers, and sound absorbing materials for a muffled sound, Constructed of aluminum and stainless steel, Double-walled mounting bracket(s), Longer canister design keeps noise levels to a minimum, No loss of motor performance, Made in the USA