Amazon.com: BLACKHORSE-RACING 2.5 inch ID - 3 inch ID Universal Exhaust Pipe Adapter Connector Reducer Stainless Steel (2.5" ID - 3" ID) : Automotive
Amazon.com: Universal 2.5" OD to 2.75" ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 2.5 Inch to 2.75 Inch 2 1/2” OD to 2 3/4” ID kit : Everything Else
PLM 3” to 2.5” Exhaust Adapter Flange
Amazon.com: EVIL ENERGY 2.5" ID to 3.0" OD Exhaust Reducer Adapter Stainless Steel : Automotive
Amazon.com: 2 Packs Universal 2.5" OD to 2.75" ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 2.5 Inch to 2.75 Inch 2 1/2” OD to 2 3/4” ID kit : Everything Else
Exhaust - Adapter-Reducer - 2.75 inch to 2.5 inch for JHM B7-RS4 2.75 inch Downpipes
Amazon.com: LucaSng T409 Stainless Steel Y Pipe 3" Single to 2 1/2" 2.5" Dual Exhaust Adapter Connector,Overall Length: Approx. 10",Universal : Automotive
Amazon.com: Mishimoto MMEXH-ADAP-3DSE Exhaust Adapter 3" Downpipe to Stock Exhaust Compatible With Subaru Silver : Automotive
Stock DP>Aftermarket 3 in. Catback Adapter - Subaru - GrimmSpeed
Amazon.com: Exhaust Collector,2?1 Adapter Stainless Steel Exhaust Merge Collector Dual 3in ID Inlet Single 3in OD Outlet for Car 2.5 inlet to 3 outlet exhaust y pipe 2.5 inlet to 3 outlet