Many circuit tracks prohibit vehicles with straight-pipe catalytic converter replacements due to noise regulations.To address this, we developed a silencer pipe that integrates a small muffler into the straight pipe setup, allowing continued use of a...

NA1 3.0L fitment. Inside diameter is 50mm for best torque. These test pipes replace your factory catalytic converters. These will match perfectly with our RFY headers and cat-back exhaust. Comes with gaskets and hardware. Off-road uses only.