3" to 2.5" Reducer V-BAND Kit SS — Warfighter Fabrication
3 Inch to 2.5 Inch OD Stainless Standard Exhaust Pipe Connector Adapter Reducer - Walmart.com
Amazon.com: 8SC82 Exhaust Pipe Reducer Component Adapter 2.5 Inch ID to 3 Inch OD 4 Inch Length Polished 304 Stainless Steel Universal 2.5"ID to 3"OD Exhaust Pipe Reducer Adapter-2PCS : Automotive
3 x 2.5 inch SS Concentric Reducer Clamp fittings - Hamby Dairy Supply
Amazon.com: Universal 2.5" ID to 3" ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 2.5 Inch to 3.0 Inch 2 1/2” ID to 3.0” ID kit : Everything Else