Invidia Stock Downpipe to 3in Exhaust Adapter - Universal PDM_tensioners-idlers There is nothing to gain

There is nothing to gain from an aftermarket clutch at factory power levels

Black silicone couplers included

Silicone elbow will eliminate restrictions and increases airflow capacity

But don't forget that BC designs its suspension components to handle the perils of motorsports

or it can be used to connect coolant pipes

Invidia Stock Downpipe to 3in Exhaust Adapter - Universal PDM_tensioners-idlers There is nothing to gainStock 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