Unlike any other mid pipe, the RPM SxS Monster Mouth is a huge 3" chamber with a 2.5" muffler outlet that allows the use the stock muffler, any muffler with stock locations, or any
RPM X3 Slip on Mufflers. No restrictions left on the table!!! This pipe flows the absolute most air. Overall it is 1/2" larger at the core and muffler inlet. We accomplished this by designing a completely new spherical exhaust gasket built from heavy duty stainless mesh that's infused with composite graphite.