The Invidia 3" stainless steel downpipe for the Mitsubishi Evolution 8 & 9 is designed to bolt up between the stock or Invidia O2 housing and a stock catalytic converter or test pipe. The 3" design allows for excellent flow, while maintaining a proper gasket seal with the stock donut gasket ensuring proper clearance and the ability to move under engine load. The Invidia downpipe for the EVO will mate to most cat-delete pipes if you decide to optimize your flow.
Special Notes:
Requires spacing of OEM lower chassis brace or use of an aftermarket brace with more clearence.