2.5" 3" Exhaust Muffler Stainless Steel with Vacuum Operated Valve

•      This is one piece stainless muffler with dual round tips is made of 100% high quality T-304 stainless steel.  This muffler fits most BMWs with 2.5"/3" inlet (usually for non-turbo engines and exhaust with 2.5"/3" inlet).  Getting more air into your engine and exhaust out is the key to any performance motor.
•      Larger exhaust diameter means higher air flow efficiency which reduces the back pressure that occurs in a standard exhaust system.
•     This muffler will produce a smooth deep throaty tone.  Sound level varies, depending on piping diameter and type of resonator.
• "Close" valve setting for lower sound level which sounds like stock muffler.
• "Open" valve setting for higher sound level.

You can select from 2 different piping sizes and outlet directions.

This is custom made item, please allow additional shipping time.