REDUCERS & EXPANDERS
What is an Exhaust Reducer or Connector?
An ID to OD Reducing exhaust connector is a small length pipe that is designed to join two different sized pipes together.
One end of the reduced exhaust coupler pipe plugs into the other end to connect one device to another. Reducer come in 4 different types and are either male, OD or female ID, in which the male connector can be inserted.
A lot of our customers use Connectors or Couplers to add on to existing pipes for more length, or to change the size from Smaller to Larger diameter exhaust pipes.
What Type of Ends do I need with my Exhaust Connector?
When purchasing a connector, please make sure that you are getting the right size and have the correct ends figured correctly.
- ID = Inside Diameter
- OD = Outside Diameter
You can think of the pipe with an ID end as being the Female end of the Pipe. An OD ended pipe will fit inside of the ID.
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![5" OD to 4" ID Exhaust Reducer Aluminized Pipe R5O-4IA]( "5\" OD to 4\" ID Exhaust Reducer Aluminized Pipe R5O-4IA")
![5" OD to 4" ID Exhaust Reducer Aluminized Pipe R5O-4IA]( "5\" OD to 4\" ID Exhaust Reducer Aluminized Pipe R5O-4IA")
5" OD to 4" ID Exhaust Reducer Aluminized Pipe R5O-4IA
Nelson Aftermarket
OEM PRICE $101.00YOUR PRICE $71.00R5O-4IA 5 inch OD to 4 inch ID Reducer Aluminized R5O-4IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits...NEL89187A-20OEM PRICE $101.00YOUR PRICE $71.00 -
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![R5O-45OA 5" OD to 4.5" OD Exhaust Reducer Aluminized Pipe]( "R5O-45OA 5\" OD to 4.5\" OD Exhaust Reducer Aluminized Pipe")
![R5O-45OA 5" OD to 4.5" OD Exhaust Reducer Aluminized Pipe]( "R5O-45OA 5\" OD to 4.5\" OD Exhaust Reducer Aluminized Pipe")
5" OD to 4.5" OD Exhaust Reducer Aluminized Pipe R5O-45OA
Grand Rock
OEM PRICE $102.00YOUR PRICE $72.00R5O-45OA 5 inch OD to 4.5 inch OD Reducer Aluminized R5O-45OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR5O-45OAOEM PRICE $102.00YOUR PRICE $72.00 -
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![5" OD to 4.5" ID Exhaust Reducer Aluminized Pipe R5O-45IA]( "5\" OD to 4.5\" ID Exhaust Reducer Aluminized Pipe R5O-45IA")
![5" OD to 4.5" ID Exhaust Reducer Aluminized Pipe R5O-45IA]( "5\" OD to 4.5\" ID Exhaust Reducer Aluminized Pipe R5O-45IA")
5" OD to 4.5" ID Exhaust Reducer Aluminized Pipe R5O-45IA
Grand Rock
OEM PRICE $101.00YOUR PRICE $71.00R5O-45IA 5 inch OD to 4.5 inch ID Reducer Aluminized R5O-45IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR5O-45IAOEM PRICE $101.00YOUR PRICE $71.00 -
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![R5I-4OC 5" ID to 4" OD Exhaust Reducer Chrome]( "R5I-4OC 5\" ID to 4\" OD Exhaust Reducer Chrome")
![5" ID to 4" OD Exhaust Reducer Chrome]( "5\" ID to 4\" OD Exhaust Reducer Chrome")
5" ID to 4" OD Exhaust Reducer Chrome R5I-4OC
Grand Rock
OEM PRICE $164.00YOUR PRICE $114.00R5I-4OC 5 inch ID to 4 inch OD Reducer Chrome R5I-4OC What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits your...GRCR5I-4OCOEM PRICE $164.00YOUR PRICE $114.00 -
![5" ID to 4" OD Exhaust Reducer Aluminized Pipe R5I-4OA]( "5\" ID to 4\" OD Exhaust Reducer Aluminized Pipe R5I-4OA")
![5" ID to 4" OD Exhaust Reducer Aluminized Pipe R5I-4OA]( "5\" ID to 4\" OD Exhaust Reducer Aluminized Pipe R5I-4OA")
5" ID to 4" OD Exhaust Reducer Aluminized Pipe R5I-4OA
Grand Rock
OEM PRICE $106.00YOUR PRICE $76.00R5I-4OA 5 inch ID to 4 inch OD Reducer Aluminized R5I-4OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits...GRCR5I-4OAOEM PRICE $106.00YOUR PRICE $76.00 -
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![R5I-4IC 5" ID to 4" ID Exhaust Reducer Chrome]( "R5I-4IC 5\" ID to 4\" ID Exhaust Reducer Chrome")
![5" ID to 4" ID Exhaust Reducer Chrome]( "5\" ID to 4\" ID Exhaust Reducer Chrome")
5" ID to 4" ID Exhaust Reducer Chrome R5I-4IC
Grand Rock
OEM PRICE $164.00YOUR PRICE $114.00R5I-4IC 5 inch ID to 4 inch ID Reducer Chrome R5I-4IC What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits your...GRCR5I-4ICOEM PRICE $164.00YOUR PRICE $114.00 -
![R5I-4IA 5" ID to 4" ID Exhaust Reducer Aluminized Pipe]( "R5I-4IA 5\" ID to 4\" ID Exhaust Reducer Aluminized Pipe")
![R5I-4IA 5" ID to 4" ID Exhaust Reducer Aluminized Pipe]( "R5I-4IA 5\" ID to 4\" ID Exhaust Reducer Aluminized Pipe")
5" ID to 4" ID Exhaust Reducer Aluminized Pipe R5I-4IA
Grand Rock
OEM PRICE $101.00YOUR PRICE $71.00R5I-4IA 5 inch ID to 4 inch ID Reducer Aluminized R5I-4IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits...GRCR5I-4IAOEM PRICE $101.00YOUR PRICE $71.00 -
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![R5I-45IA 5" ID x 4.5" ID x 8" Exhaust Reducer Aluminized Pipe]( "R5I-45IA 5\" ID x 4.5\" ID x 8\" Exhaust Reducer Aluminized Pipe")
![R5I-45IA 5" ID x 4.5" ID x 8" Exhaust Reducer Aluminized Pipe]( "R5I-45IA 5\" ID x 4.5\" ID x 8\" Exhaust Reducer Aluminized Pipe")
5" ID x 4.5" ID x 8" Exhaust Reducer Aluminized Pipe R5I-45IA
Grand Rock
OEM PRICE $106.00YOUR PRICE $76.00R5I-45IA 5 inch ID x 4.5 inch ID x 8 inch Long Reducer Aluminized R5I-45IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out...GRCR5I-45IAOEM PRICE $106.00YOUR PRICE $76.00 -
![R4O-3OA 4" OD to 3" OD Exhaust Reducer Aluminized Pipe]( "R4O-3OA 4\" OD to 3\" OD Exhaust Reducer Aluminized Pipe")
![R4O-3OA 4" OD to 3" OD Exhaust Reducer Aluminized Pipe]( "R4O-3OA 4\" OD to 3\" OD Exhaust Reducer Aluminized Pipe")
4" OD to 3" OD Exhaust Reducer Aluminized Pipe R4O-3OA
Grand Rock
OEM PRICE $76.00YOUR PRICE $56.00R4O-3OA 4 inch OD to 3 inch OD Reducer Aluminized R4O-3OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits...GRCR4O-3OAOEM PRICE $76.00YOUR PRICE $56.00 -
![4" OD to 3" ID Exhaust Reducer Aluminized Pipe R4O-3IA]( "4\" OD to 3\" ID Exhaust Reducer Aluminized Pipe R4O-3IA")
![4" OD to 3" ID Exhaust Reducer Aluminized Pipe R4O-3IA]( "4\" OD to 3\" ID Exhaust Reducer Aluminized Pipe R4O-3IA")
4" OD to 3" ID Exhaust Reducer Aluminized Pipe R4O-3IA
Grand Rock
OEM PRICE $85.00YOUR PRICE $55.00R4O-3IA 4 inch OD to 3 inch ID Reducer Aluminized R4O-3IA Bluebird part 0100144 What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find...GRCR4O-3IAOEM PRICE $85.00YOUR PRICE $55.00 -
![R4O-35OA 4" OD to 3.5" OD Exhaust Reducer Aluminized Pipe]( "R4O-35OA 4\" OD to 3.5\" OD Exhaust Reducer Aluminized Pipe")
![R4O-35OA 4" OD to 3.5" OD Exhaust Reducer Aluminized Pipe]( "R4O-35OA 4\" OD to 3.5\" OD Exhaust Reducer Aluminized Pipe")
4" OD to 3.5" OD Exhaust Reducer Aluminized Pipe R4O-35OA
Grand Rock
OEM PRICE $93.00YOUR PRICE $63.00R4O-35OA 4 inch OD to 3.5 inch OD Reducer Aluminized R4O-35OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR4O-35OAOEM PRICE $93.00YOUR PRICE $63.00 -
![4" OD to 3.5" ID Exhaust Reducer Aluminized Pipe R4O-35IA]( "4\" OD to 3.5\" ID Exhaust Reducer Aluminized Pipe R4O-35IA")
![4" OD to 3.5" ID Exhaust Reducer Aluminized Pipe R4O-35IA]( "4\" OD to 3.5\" ID Exhaust Reducer Aluminized Pipe R4O-35IA")
4" OD to 3.5" ID Exhaust Reducer Aluminized Pipe R4O-35IA
Grand Rock
OEM PRICE $81.00YOUR PRICE $51.00R4O-35IA 4 inch OD to 3.5 inch ID Reducer Aluminized R4O-35IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR4O-35IAOEM PRICE $81.00YOUR PRICE $51.00 -
![4" ID to 3" OD Exhaust Reducer Aluminized Pipe R4I-3OA]( "4\" ID to 3\" OD Exhaust Reducer Aluminized Pipe R4I-3OA")
![4" ID to 3" OD Exhaust Reducer Aluminized Pipe R4I-3OA]( "4\" ID to 3\" OD Exhaust Reducer Aluminized Pipe R4I-3OA")
4" ID to 3" OD Exhaust Reducer Aluminized Pipe R4I-3OA
Grand Rock
OEM PRICE $91.00YOUR PRICE $61.00R4I-3OA 4 inch ID to 3 inch OD Reducer Aluminized R4I-3OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits...GRCR4I-3OAOEM PRICE $91.00YOUR PRICE $61.00 -
![R4I-3IA 4" ID to 3" ID Exhaust Reducer Aluminized Pipe]( "R4I-3IA 4\" ID to 3\" ID Exhaust Reducer Aluminized Pipe")
![R4I-3IA 4" ID to 3" ID Exhaust Reducer Aluminized Pipe]( "R4I-3IA 4\" ID to 3\" ID Exhaust Reducer Aluminized Pipe")
4" ID to 3" ID Exhaust Reducer Aluminized Pipe R4I-3IA
Grand Rock
OEM PRICE $92.00YOUR PRICE $62.00R4I-3IA 4 inch ID to 3 inch ID Reducer Aluminized R4I-3IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits...GRCR4I-3IAOEM PRICE $92.00YOUR PRICE $62.00 -
![4" ID to 3.5" OD Exhaust Reducer Aluminized Pipe R4I-35OA]( "4\" ID to 3.5\" OD Exhaust Reducer Aluminized Pipe R4I-35OA")
![4" ID to 3.5" OD Exhaust Reducer Aluminized Pipe R4I-35OA]( "4\" ID to 3.5\" OD Exhaust Reducer Aluminized Pipe R4I-35OA")
4" ID to 3.5" OD Exhaust Reducer Aluminized Pipe R4I-35OA
Grand Rock
OEM PRICE $93.00YOUR PRICE $63.00R4I-35OA 4 inch ID to 3.5 inch OD Reducer Aluminized R4I-35OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR4I-35OAOEM PRICE $93.00YOUR PRICE $63.00 -
![R4I-35IA 4" ID to 3.5" ID Exhaust Reducer Aluminized Pipe]( "R4I-35IA 4\" ID to 3.5\" ID Exhaust Reducer Aluminized Pipe")
![R4I-35IA 4" ID to 3.5" ID Exhaust Reducer Aluminized Pipe]( "R4I-35IA 4\" ID to 3.5\" ID Exhaust Reducer Aluminized Pipe")
4" ID to 3.5" ID Exhaust Reducer Aluminized Pipe R4I-35IA
Grand Rock
OEM PRICE $91.00YOUR PRICE $61.00R4I-35IA 4 inch ID to 3.5 inch ID Reducer Aluminized R4I-35IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR4I-35IAOEM PRICE $91.00YOUR PRICE $61.00 -
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![R45O-4OA 4.5" OD to 4" OD Exhaust Reducer Aluminized Pipe]( "R45O-4OA 4.5\" OD to 4\" OD Exhaust Reducer Aluminized Pipe")
![R45O-4OA 4.5" OD to 4" OD Exhaust Reducer Aluminized Pipe]( "R45O-4OA 4.5\" OD to 4\" OD Exhaust Reducer Aluminized Pipe")
4.5" OD to 4" OD Exhaust Reducer Aluminized Pipe R45O-4OA
Grand Rock
OEM PRICE $103.00YOUR PRICE $73.00R45O-4OA 4.5" OD to 4" OD Reducer Aluminized R45O-4OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits your...GRCR45O-4OAOEM PRICE $103.00YOUR PRICE $73.00 -
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![4.5" OD to 4" ID Exhaust Reducer Aluminized Pipe R45O-4IA]( "4.5\" OD to 4\" ID Exhaust Reducer Aluminized Pipe R45O-4IA")
![4.5" OD to 4" ID Exhaust Reducer Aluminized Pipe R45O-4IA]( "4.5\" OD to 4\" ID Exhaust Reducer Aluminized Pipe R45O-4IA")
4.5" OD to 4" ID Exhaust Reducer Aluminized Pipe R45O-4IA
Grand Rock
OEM PRICE $162.00YOUR PRICE $132.00R45O-4IA 4.5" OD to 4" ID Reducer Aluminized R45O-4IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits your...GRCR45O-4IAOEM PRICE $162.00YOUR PRICE $132.00 -
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![4.5" ID to 4" OD Exhaust Reducer Aluminized Pipe R45I-4OA]( "4.5\" ID to 4\" OD Exhaust Reducer Aluminized Pipe R45I-4OA")
![4.5" ID to 4" OD Exhaust Reducer Aluminized Pipe R45I-4OA]( "4.5\" ID to 4\" OD Exhaust Reducer Aluminized Pipe R45I-4OA")
4.5" ID to 4" OD Exhaust Reducer Aluminized Pipe R45I-4OA
Grand Rock
OEM PRICE $111.00YOUR PRICE $81.00R45I-4OA 4.5 inch ID to 4 inch OD Reducer Aluminized R45I-4OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR45I-4OAOEM PRICE $111.00YOUR PRICE $81.00 -
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![R3O-25OA 3" OD to 2.5" OD Exhaust Reducer Aluminized]( "R3O-25OA 3\" OD to 2.5\" OD Exhaust Reducer Aluminized")
![R3O-25OA 3" OD to 2.5" OD Exhaust Reducer Aluminized]( "R3O-25OA 3\" OD to 2.5\" OD Exhaust Reducer Aluminized")
3" OD to 2.5" OD Exhaust Reducer Aluminized R3O-25OA
Grand Rock
OEM PRICE $91.00YOUR PRICE $61.00R3O-25OA 3 inch OD to 2.5 inch OD Reducer Aluminized R3O-25OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR3O-25OAOEM PRICE $91.00YOUR PRICE $61.00 -
![3" OD x 2.5" ID Exhaust Reducer Aluminized Pipe R3O-25IA]( "3\" OD x 2.5\" ID Exhaust Reducer Aluminized Pipe R3O-25IA")
![3" OD x 2.5" ID Exhaust Reducer Aluminized Pipe R3O-25IA]( "3\" OD x 2.5\" ID Exhaust Reducer Aluminized Pipe R3O-25IA")
3" OD x 2.5" ID Exhaust Reducer Aluminized Pipe R3O-25IA
Grand Rock
OEM PRICE $91.00YOUR PRICE $65.00R3O-25IA 3 inch OD x 2.5 inch ID Reducer Aluminized R3O-25IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR3O-25IAOEM PRICE $91.00YOUR PRICE $65.00 -
![R3I-25IA 3" ID x 2.5" ID Exhaust Reducer Aluminized Pipe]( "R3I-25IA 3\" ID x 2.5\" ID Exhaust Reducer Aluminized Pipe")
![R3I-25IA 3" ID x 2.5" ID Exhaust Reducer Aluminized Pipe]( "R3I-25IA 3\" ID x 2.5\" ID Exhaust Reducer Aluminized Pipe")
3" ID x 2.5" ID Exhaust Reducer Aluminized Pipe R3I-25IA
Grand Rock
OEM PRICE $105.00YOUR PRICE $75.00R3I-25IA 3 inch ID x 2.5 inch ID Reducer Aluminized R3I-25IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR3I-25IAOEM PRICE $105.00YOUR PRICE $75.00 -
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![R35O-3OA 3.5" OD to 3" OD Exhaust Reducer Aluminized]( "R35O-3OA 3.5\" OD to 3\" OD Exhaust Reducer Aluminized")
![R35O-3OA 3.5" OD to 3" OD Exhaust Reducer Aluminized]( "R35O-3OA 3.5\" OD to 3\" OD Exhaust Reducer Aluminized")
3.5" OD to 3" OD Exhaust Reducer Aluminized R35O-3OA
Grand Rock
OEM PRICE $83.00YOUR PRICE $53.00R35O-3OA 3.5 inch OD to 3 inch OD Reducer Aluminized R35O-3OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR35O-3OAOEM PRICE $83.00YOUR PRICE $53.00 -
![3.5" OD to 3" ID Exhaust Reducer Aluminized Pipe R35O-3IA]( "3.5\" OD to 3\" ID Exhaust Reducer Aluminized Pipe R35O-3IA")
![3.5" OD to 3" ID Exhaust Reducer Aluminized Pipe R35O-3IA]( "3.5\" OD to 3\" ID Exhaust Reducer Aluminized Pipe R35O-3IA")
3.5" OD to 3" ID Exhaust Reducer Aluminized Pipe R35O-3IA
Grand Rock
OEM PRICE $81.00YOUR PRICE $51.00R35O-3IA 3.5 inch OD to 3 inch ID Reducer Aluminized R35O-3IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR35O-3IAOEM PRICE $81.00YOUR PRICE $51.00 -
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![3.5" ID to 3" OD Exhaust Reducer Aluminized Pipe R35I-3OA]( "3.5\" ID to 3\" OD Exhaust Reducer Aluminized Pipe R35I-3OA")
![3.5" ID to 3" OD Exhaust Reducer Aluminized Pipe R35I-3OA]( "3.5\" ID to 3\" OD Exhaust Reducer Aluminized Pipe R35I-3OA")
3.5" ID to 3" OD Exhaust Reducer Aluminized Pipe R35I-3OA
Grand Rock
OEM PRICE $91.00YOUR PRICE $61.00R35I-3OA 3.5 inch ID to 3 inch OD Reducer Aluminized R35I-3OA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR35I-3OAOEM PRICE $91.00YOUR PRICE $61.00 -
![3.5" ID to 3" ID Exhaust Reducer Aluminized Pipe R35I-3IA]( "3.5\" ID to 3\" ID Exhaust Reducer Aluminized Pipe R35I-3IA")
![3.5" ID to 3" ID Exhaust Reducer Aluminized Pipe R35I-3IA]( "3.5\" ID to 3\" ID Exhaust Reducer Aluminized Pipe R35I-3IA")
3.5" ID to 3" ID Exhaust Reducer Aluminized Pipe R35I-3IA
Grand Rock
OEM PRICE $90.00YOUR PRICE $60.00R35I-3IA 3.5 inch ID to 3 inch ID Reducer Aluminized R35I-3IA What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCR35I-3IAOEM PRICE $90.00YOUR PRICE $60.00
