3" OD x 2.5" ID Exhaust Reducer Aluminized Pipe R3O-25IA

3.5" OD to 3" ID Exhaust Reducer Aluminized Pipe R35O-3IA

4" OD to 3" ID Exhaust Reducer Aluminized Pipe R4O-3IA

4" OD to 3.5" ID Exhaust Reducer Aluminized Pipe R4O-35IA

4.5" OD to 4" ID Exhaust Reducer Aluminized Pipe R45O-4IA

5" OD to 3.5" ID Reducer Aluminized Exhaust Pipe R5O-35IA

5" OD to 4" ID Exhaust Reducer Aluminized Pipe R5O-4IA

5" OD to 4.5" ID Exhaust Reducer Aluminized Pipe R5O-45IA

6" OD to 4" ID Exhaust Reducer Aluminized R6O-4IA - SPECIAL ORDER

6" OD to 5" ID Exhaust Reducer Aluminized Pipe R6O-5IA

8" OD to 5" ID Exhaust Reducer Aluminized Pipe R8O-5IA