Megan Racing Down Pipes are designed to give maximum performance gains. These are direct bolt on down-pipes ideal for turbo applications. These pipes feature mandrel bent piping, and high polished stainless steel or polished SUS304 stainless steel piping (depending on the application). The Megan Racing Down Pipes are designed only for off road use, and offer maximum exhaust gas-flow and increased turbo spool-up. You can easily use these pipes with any cat-back exhaust system or stock exhaust systems with a 3" flange.