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The ISR Performance universal 4-inch exhaust silencer is an inline attenuation device for 4-inch exhaust systems, offering added sound reduction where installed. Designed for universal fitment, it can be integrated into 4-inch piping to quiet resonance and lower exhaust tone. Use this silencer when modifying or building a 4-inch exhaust to achieve a milder sound without major system changes.
ISR Performance Universal Exhaust Silencer - 4in
