Header Reducers

Your headers end in one size, and the rest of your exhaust is a different size. Looks like you need some header reducers!

Since lap joints are easier to deal with than...

Your headers end in one size, and the rest of your exhaust is a different size. Looks like you need some header reducers!

Since lap joints are easier to deal with than butt joints, it's ideal to have the outside diameter of the pipe coming off the collectors fit within the inside diameter of the exhaust pipe. Header reducers (sometimes called collector reducers) usually have a flange on one end, to connect to the header, and the other end is made to slip fit into your exhaust system. From there, it's a simple matter to clamp the joint together, or simply weld it.

Summit Racing Equipment makes it easy to find the reducer you...

Your headers end in one size, and the rest of your exhaust is a different size. Looks like you need some header reducers!

Summit Racing Equipment makes it easy to find the reducer you need. You can filter the results below by collector diameter, outlet diameter, and even material and finish! If you need an exhaust sensor bung, you can filter those out, too.

If you need to change pipe sizes further downstream, Summit also carries exhaust pipe adapters and reducers to help you assemble the perfect custom system. For more information and advice on exhaust component sizing, check out this article and video on our blog.

Top Brands

Never settle for parts from third-party resellers! You can shop with confidence at Summit Racing Equipment, because we only partner with trusted manufacturers. Choose your header reducers from proven brands like Hedman Hedders, Dynomax Performance, Hooker Headers, Flowmaster, Kooks Headers, Patriot Exhaust, Sanderson Headers, JBA Headers, Pypes Performance, and many more.

Individual Parts

Part Groups

Results 1 - 25 of 148

Summit Racing™ Exhaust Reducers with 2.5 Inch Outlet SUM-G4754

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 2.5 in. Outlet, Steel, Natural, Pair

Part Number: SUM-G4754

4.59 out of 5 stars ( 49 )

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Summit Racing™ Exhaust Reducers with 3 Inch Outlet SUM-G4752ID

Header Reducers, 3-Bolt Flange, 3.00 in. Inlet, 3.00 in. Outlet, Steel, Natural, Pair

Part Number: SUM-G4752ID

4.66 out of 5 stars ( 38 )

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Pypes Stainless Steel Collector Reducers with 2.5 Inch Outlet PVR16S

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 2.5 in. Outlet, Stainless Steel, Polished, Pair

Part Number: PYE-PVR16S

4.89 out of 5 stars ( 55 )

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Summit Racing™ Exhaust Reducers with 2.5 Inch Outlet SUM-G4756

Header Reducers, 3-Bolt Flange, 2.5 in. Inlet, 2.5 in. Outlet, Steel, Natural, Pair

Part Number: SUM-G4756

4.55 out of 5 stars ( 44 )

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Hedman Header Reducers with 3 Inch Outlet 21119

Hedman Header Reducers with 3 Inch Outlet 21119

Header Reducers, Ball and Socket Flange, 3 in. Inlet, 3 in. Outlet, Steel, Natural, Pair

Part Number: HED-21119

4.9 out of 5 stars ( 29 )

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Hedman Header Reducers with 3 Inch Outlet 21152

Header Reducers, 3.000 in. Diameter, Ball and Socket Flange, Steel, Natural, Each

Part Number: HED-21152

4.75 out of 5 stars ( 8 )

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Summit Racing™ Exhaust Reducers with 3 Inch Outlet SUM-G4753

Header Reducers, 3-Bolt Flange, 3.50 in. Inlet, 3.00 in. Outlet, Steel, Natural, Pair

Part Number: SUM-G4753

4.75 out of 5 stars ( 12 )

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Hedman Header Reducers with 2.5 Inch Outlet 21115

Header Reducers, Ball and Socket Flange, 3 in. Inlet, 2.5 in. Outlet, Steel, Painted, Pair

Part Number: HED-21115

4.64 out of 5 stars ( 42 )

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JBA Performance Exhaust Header Reducers with 2.5 Inch Outlet 1650ST

Header Starter Tubes, Ball and Socket, 2-Bolt Flange, 409 Stainless Steel, 2.5 in. Diameter, Pair

Part Number: JBA-1650ST

5.0 out of 5 stars ( 12 )

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Hooker Reducers with 2.5 Inch Outlet 11040HKR

Header Reducers, 3-Bolt Flange, 3.00 in. Inlet, 2.50 in. Outlet, Steel, Painted, Pair

Part Number: HOK-11040HKR

4.78 out of 5 stars ( 49 )

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Pypes Stainless Steel Collector Reducers with 3 Inch Outlet PVR10S

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 3 in. Outlet, Stainless Steel, Polished, Pair

Part Number: PYE-PVR10S

4.89 out of 5 stars ( 27 )

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Summit Racing™ Exhaust Reducers with 2.5 Inch Outlet SUM-G4754SS

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 2.5 in. Outlet, Stainless Steel, Natural, Pair

Part Number: SUM-G4754SS

4.7 out of 5 stars ( 23 )

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Hedman Header Reducers with 2.5 Inch Outlet 21123

Header Reducers, Ball and Socket Flange, 2.5 in. Inlet, 2.5 in. Outlet, Steel, Natural, Pair

Part Number: HED-21123

4.82 out of 5 stars ( 17 )

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Summit Racing™ Exhaust Reducers with 3 Inch Outlet SUM-G4752

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 3 in. Outlet, Steel, Natural, Pair

Part Number: SUM-G4752

4.5 out of 5 stars ( 46 )

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Pypes Stainless Steel Collector Reducers with 3 Inch Outlet PVR13S

Header Reducers, 3-Bolt Flange, 3.5 in. Inlet, 3 in. Outlet, Stainless Steel, Polished, Pair

Part Number: PYE-PVR13S

4.92 out of 5 stars ( 25 )

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Kooks Headers Exhaust Connectors with 3 Inch Outlet 7106S-FEMALE

Collector Flange, Stainless Steel, Natural, 3 in. Diameter, Ball and Socket Flange, 16-Gauge, Each

Part Number: KOK-7106SFEMALE

4.83 out of 5 stars ( 6 )

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Hooker Reducers with 3 Inch Outlet 11036HKR

Header Reducers, 3-Bolt Flange, Welded, 3.50 in. Inlet, 3.00 in. Outlet, Steel, Painted, Pair

Part Number: HOK-11036HKR

4.94 out of 5 stars ( 17 )

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Hedman Header Reducers with 2.5 Inch Outlet 21151

Header Reducers, 2.500 in. Diameter, Ball and Socket Flange, Steel, Natural, Each

Part Number: HED-21151

4.69 out of 5 stars ( 13 )

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Hedman Header Reducers with 3 Inch Outlet 21118

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 3 in. Outlet, Steel, Natural, Pair

Part Number: HED-21118

4.5 out of 5 stars ( 10 )

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Summit Racing™ Exhaust Reducers with 3 Inch Outlet SUM-626120

Header Reducers, 3-Bolt Flange, 3.5 in. Inlet, 3 in. Outlet, 12.000 in. Long, Stainless Steel, Polished, Pair

Part Number: SUM-626120

Not Yet Reviewed

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Flowmaster Slip-On Reducer Cones with 2.5 Inch Outlet R3025

Header Reducers, Slip Fit, 3 in. Inlet, 2.5 in. Outlet, Steel, Aluminized, Pair

Part Number: FLO-R3025

5.0 out of 5 stars ( 24 )

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Hooker Reducers with 2.5 Inch Outlet 11026HKR

Header Reducers, 3-Bolt Flange, 2.50 in. Inlet, 2.50 in. Outlet, Steel, Painted Black, Pair

Part Number: HOK-11026HKR

4.66 out of 5 stars ( 29 )

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Hedman Oxygen Sensor Reducers with 3 Inch Outlet 22126

Header Reducer, with Oxygen Sensor Bung, 3-Bolt Flange, 3.00 in. Inlet, 3.00 in. Outlet, Stainless Steel, Natural, Each

Part Number: HED-22126

3.75 out of 5 stars ( 4 )

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Summit Racing™ Exhaust Reducers with 2.5 Inch Outlet SUM-626122

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 2.5 in. Outlet, 12.000 in. Long, Stainless Steel, Polished, Pair

Part Number: SUM-626122

5.0 out of 5 stars ( 2 )

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Hedman Header Reducers with 2.5 Inch Outlet 21105

Header Reducer; Gasket Style; Tube Size 2.5 in.; Collector 2.5 in.; 3-Bolt Flange; Mild Steel

Part Number: HED-21105

4.52 out of 5 stars ( 21 )

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