Invidia Stock Downpipe to 3in Exhaust Adapter – Universal

Stock Downpipe to 3-Inch Exhaust Adapter, Universal for Subaru Models

The Invidia Stock Downpipe to 3-Inch Exhaust Adapter connects a stock OEM Subaru downpipe to an aftermarket 3-inch cat-back exhaust system without replacing the downpipe. This adapter bridges the diameter transition between the factory downpipe outlet and the 3-inch inlet of most performance cat-back systems.

DETAILS

• Adapts OEM downpipe to 3-inch cat-back
• Stainless steel construction
• Clean connection without fabrication
• Universal for Subaru OEM downpipe applications

The adapter is the correct solution for builds upgrading the cat-back while retaining the factory downpipe, either for cost, emissions, or phased build reasons. Without the adapter, connecting a 3-inch cat-back to the OEM downpipe requires custom work at the joint.

Verify the OEM downpipe outlet diameter of your specific application matches the adapter’s inlet before ordering. The 3-inch outlet is compatible with Invidia and most aftermarket cat-back systems using 3-inch inlet connections.

What’s in the Box

• Exhaust adapter
• Clamps or hardware as applicable

Why Choose Invidia

Invidia has been manufacturing performance exhaust systems in Japan since 1999, and in that time they have built a reputation that carries real weight in the tuning community. Every system is manufactured using SUS304 stainless steel and mandrel-bent tubing, which eliminates the flow restrictions and weak points that crush-bent alternatives introduce at every corner. Their in-house engineering team designs each application from scratch rather than adapting a generic template, which is why Invidia fitment is consistently tighter than the competition. The result is an exhaust that installs cleanly, seals correctly, and lasts. Invidia backs their products with a quality standard that is visible in the finish, the weld quality, and the hardware, details that reflect over two decades of refining the same core manufacturing process.

The RallySport Take

The adapter is what makes a phased build work cleanly. If you are putting on a 3-inch cat-back now and planning to upgrade the downpipe later, this is the piece that lets you do that without fabrication. Universal for Subaru applications with OEM downpipe, verify your application before ordering.

Fitment