The highly acclaimed "Q" series silencers shook the motorcycling world on its debut in 2002. With its longer oval canister, the trademarked Q uses internal technology that retains optimum flow characteristics while enhancing sound absorption qualities. The U.S. Forest legal spark arrestor will meet the mandated 96dB sound level set by the US Forest Service making it the quietest 2-stroke performance spark arrestor made! Serious sound deadening qualities and excellent power. Extruded from 6060-T6 aluminum alloy with factory replica stainless steel endcaps. Completely repackable. Turbinecore II measures 94db. Fits stock pipes as well as aftermarket pipes. Detailed Specifications: Type: Slip-On. Configuration: Single. Construction: Aluminum. Finish: Natural. Endcap: Stainless steel. Spark arrestor: Screen insert (included).