AWE Non-Resonated Performance Mid Pipe for BMW G8X M3/M4Ditch the factory mid section and replace it with two 3, non resonated mid pipes designed to up the ante in the aggression department. Mate the mid pipes to the SwitchPath or Track Edition Exhausts if you prefer the party to start right behind the factory secondary catalysts. Note: AWEs Non Resonated Performance Mid Pipes are designed to be paired to AWE Exhausts only. Due to varying cut points, theyre not guaranteed to work another manufacturers