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Exhaust Flex Pipes

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Exhaust Flex Pipes

An exhaust flex pipe adds needed flexibility to your exhaust system, allowing it to bend instead of cracking and breaking. Also called flex joints or exhaust bellows,...

An exhaust flex pipe adds needed flexibility to your exhaust system, allowing it to bend instead of cracking and breaking. Also called flex joints or exhaust bellows, they’re an essential component of front wheel drive vehicles to absorb the rocking motions of the engine, They’re handy for custom exhaust builds, as well as competition vehicles that run hot and wild.

Flex pipes are usually found between the exhaust manifold and the down pipe. They can be as simple as a corrugated metal tube, or as complex as a multi-layer braided or woven metal lattice. Because they protect so many other parts, flex pipes tend...

An exhaust flex pipe adds needed flexibility to your exhaust system, allowing it to bend instead of cracking and breaking. Also called flex joints or exhaust bellows, they’re an essential component of front wheel drive vehicles to absorb the rocking motions of the engine, They’re handy for custom exhaust builds, as well as competition vehicles that run hot and wild.

Flex pipes are usually found between the exhaust manifold and the down pipe. They can be as simple as a corrugated metal tube, or as complex as a multi-layer braided or woven metal lattice. Because they protect so many other parts, flex pipes tend to wear out more quickly than other exhaust components, and should be checked for leaks regularly on high-performance vehicles.

Summit Racing Equipment carries exhaust flex pipes in all the popular exhaust pipe diameters. Choose a convenient 4" to 14" length for sectioning into an existing system, or in bulk coil lengths for big custom fabrication projects.

Top Brands


For everything from repairs and stock replacement flex joints, to extreme custom exhausts for hardcore racing, Summit has you covered with parts from trusted manufacturers. Shop from exhaust brands like Walker, Jones Exhaust, Vibrant Performance, Stainless Works, Dorman, and more.

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Results 1 - 25 of 25

Dorman Exhaust Flex Pipes 674-5605

Dorman Exhaust Flex Pipes 674-5605

Dorman Exhaust Flex Pipes 674-5605

Exhaust Pipe Bellows, Exhaust Bellow Joint Expansion

Part Number: RNB-674-5605

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Dorman Exhaust 5 Inch Flex Bellow Kits 674-6004

Dorman Exhaust 5 Inch Flex Bellow Kits 674-6004

Dorman Exhaust 5 Inch Flex Bellow Kits 674-6004

Bellow, Exhaust, Steel, Natural, 5.00 in. Inlet, 30.00 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6004

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Walker Exhaust Exhaust Flex Pipes 42424

Walker Exhaust Exhaust Flex Pipes 42424

Walker Exhaust Exhaust Flex Pipes 42424

Walker Heavy Duty Flex Tubing

Part Number: WLK-42424

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

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AP Exhaust 5 Inch Flex Tubing 24678

AP Exhaust 5 Inch Flex Tubing 24678

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Estimated Ship Date: Monday 4/27/2026

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Dorman Exhaust 4 Inch Flex Bellow Kits 674-6000

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6000

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6000

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 13.5 in. Length, Clamp-on, Bluebird, Truck, Kit

Part Number: RNB-674-6000

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6012

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6012

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6012

Bellow, Exhaust, Steel, Natural, 4 in. Inlet, 12.0 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6012

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6021

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6021

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6021

Bellow, Exhaust, Steel, Natural, 3.2 in. Inlet, 12.5 in. Length, Clamp-on, Kenworth, Peterbilt, Truck, Kit

Part Number: RNB-674-6021

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6001

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6001

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6001

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 14.00 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6001

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Dorman Exhaust 5 Inch Flex Bellow Kits 674-6005

Dorman Exhaust 5 Inch Flex Bellow Kits 674-6005

Dorman Exhaust 5 Inch Flex Bellow Kits 674-6005

Bellow, Exhaust, Steel, Natural, 5.00 in. Inlet, 16.500 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6005

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6013

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6013

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6013

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 14.50 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6013

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6014

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6014

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6014

Bellow, Exhaust, Steel, Natural, 4.0 in. Inlet, 13.0 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6014

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Dorman Exhaust 3.5 Inch Flex Bellow Kits 674-6018

Dorman Exhaust 3.5 Inch Flex Bellow Kits 674-6018

Dorman Exhaust 3.5 Inch Flex Bellow Kits 674-6018

Bellow, Exhaust, Steel, Natural, 3.5 in. Inlet, 12.5 in. Length, Clamp-on, Kenworth, Peterbilt, Truck, Kit

Part Number: RNB-674-6018

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Walker Exhaust - Exhaust Flex Pipes for 1981-1994 C500, 1981-1988 FLC120 - 42068

Walker Exhaust - Exhaust Flex Pipes for 1981-1994 C500, 1981-1988 FLC120 - 42068

Walker Exhaust - Exhaust Flex Pipes for 1981-1994 C500, 1981-1988 FLC120 - 42068

Walker Heavy Duty Flex Tubing

Part Number: WLK-42068

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6011

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6011

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6011

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 16.80 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6011

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6015

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6015

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6015

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 52.60 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6015

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6022

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6022

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6022

Bellow, Exhaust, Steel, Natural, 3.2 in. Inlet, 13.0 in. Length, Clamp-on, Peterbilt, Truck, Kit

Part Number: RNB-674-6022

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6025

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6025

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6025

Bellow, Exhaust, Steel, Natural, 3.25 in. Inlet, 14.750 in. Length, Clamp-on, Mack, Truck, Kit

Part Number: RNB-674-6025

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Walker Exhaust - Exhaust Flex Pipes for 1992-1993 3600, 1991-1992 3700, 1990-1993 3800 - 42066

Walker Exhaust - Exhaust Flex Pipes for 1992-1993 3600, 1991-1992 3700, 1990-1993 3800 - 42066

Walker Exhaust - Exhaust Flex Pipes for 1992-1993 3600, 1991-1992 3700, 1990-1993 3800 - 42066

Walker Heavy Duty Flex Tubing

Part Number: WLK-42066

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Dorman Exhaust 3.5 Inch Flex Bellow Kits 674-6020

Dorman Exhaust 3.5 Inch Flex Bellow Kits 674-6020

Dorman Exhaust 3.5 Inch Flex Bellow Kits 674-6020

Bellow, Exhaust, Steel, Natural, 3.50 in. Inlet, 13.2 in. Length, Clamp-on, Kenworth, Peterbilt, Truck, Kit

Part Number: RNB-674-6020

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Walker Exhaust - Exhaust Flex Pipes for 1998-1999 4700, 1989-1998 TC2000 - 42065

Walker Exhaust - Exhaust Flex Pipes for 1998-1999 4700, 1989-1998 TC2000 - 42065

Walker Exhaust - Exhaust Flex Pipes for 1998-1999 4700, 1989-1998 TC2000 - 42065

Walker Heavy Duty Flex Tubing

Part Number: WLK-42065

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

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AP Exhaust 3 Inch Flex Tubing 24752

AP Exhaust 3 Inch Flex Tubing 24752

Not Yet Reviewed

Estimated Ship Date: May 14, 2026

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Dorman Exhaust 4 Inch Flex Bellow Kits 674-6007

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6007

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6007

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 16.00 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6007

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Dorman Exhaust 4.75 Inch Flex Bellow Kits 674-6029

Dorman Exhaust 4.75 Inch Flex Bellow Kits 674-6029

Dorman Exhaust 4.75 Inch Flex Bellow Kits 674-6029

Bellow, Exhaust, Steel, Natural, 4.7 in. Inlet, 13.0 in. Length, Clamp-on, Mack, Volvo, Kit

Part Number: RNB-674-6029

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Walker Exhaust 4 Inch Flex Tubing 43381

Walker Exhaust 4 Inch Flex Tubing 43381

Walker Exhaust 4 Inch Flex Tubing 43381

Flexible Exhaust Pipe, Steel, Galvanized, 4.00 in. Diameter, 3 ft. Length, Universal

Part Number: WLK-43381

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6008

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6008

Dorman Exhaust 4 Inch Flex Bellow Kits 674-6008

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 16.00 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6008

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6028

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6028

Dorman Exhaust 3.25 Inch Flex Bellow Kits 674-6028

Bellow, Exhaust, Steel, Natural, 3.25 in. Inlet, 17.50 in. Length, Clamp-on, Mack, Volvo, Kit

Part Number: RNB-674-6028

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Walker Exhaust - Exhaust Flex Pipes for 1991-1993 9300 - 42067

Walker Exhaust - Exhaust Flex Pipes for 1991-1993 9300 - 42067

Walker Exhaust - Exhaust Flex Pipes for 1991-1993 9300 - 42067

FLEXIBLE CONNECTOR-GALVANIZED 4 in. x 18 in.

Part Number: WLK-42067

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

AP Exhaust 4 Inch Flex Tubing 24754

AP Exhaust 4 Inch Flex Tubing 24754

Not Yet Reviewed

Estimated Ship Date: May 14, 2026

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