Flowmaster Headers and Exhaust

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-8%

Flowmaster |

#378817567

Flowmaster 817567 American Thunder Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Single

Exhaust Tubing Diameter:

3-1/2 Inch

$999.95

/kit

$1,094.95

-7%

Flowmaster |

#378817707

Flowmaster 817707 Outlaw Extreme Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Single

Exhaust Tubing Diameter:

3 Inch

$478.95

/kit

$518.95

$125 Off

Flowmaster |

#378817494

Flowmaster 817494 American Thunder Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$1,449.95

/kit

$1,574.95

-6%

Flowmaster |

#378817483

Flowmaster 817483 American Thunder Axle-Back Exhaust System

Exhaust System Type:

Axle-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$1,049.95

/kit

$1,124.95

-11%

Flowmaster |

#3788430502

Flowmaster 8430502 50 Series Delta Flow Muffler 3.00 In/ 2.50 Out

Muffler Type:

Chambered

Inlet Diameter:

Outlet Diameter:

2.5"

$188.95

/each

$212.95

Project Chevelle: Exhaust Tech Article

The open headers were fun, but now it's time for a real exhaust on Project Chevelle. Follow along as we quiet things down with a Flowmaster American Thunder dual exhaust kit.

Choosing the Right Exhaust

That fresh engine deserves all new exhaust bits. Be sure to have a look at our rundown on selecting the best setup for headers, exhaust, and mufflers for your ride here.

The Sound of Flowmaster Mufflers

If you're ready to get your street machine sounding as good as it looks, it's important to know how each muffler will affect your sound and performance. Take a listen and decide which muffler is best for your rod.

Exhaust Manifolds VS Headers | How Much HP Do Headers Add

Headers and manifolds differ in design and function. Long tube headers, shorty headers, and exhaust manifolds each have their pros and cons regarding performance and application.

Exhaust System Header Wrapping

Whether you’re looking for performance improvements or heat reduction, if you decide to wrap your headers, we'll show you the benefits and possible precautions to take before you wrap your exhaust.

Best Type of Mufflers to Create the Perfect Exhaust Note | Glasspack Muffler vs Chambered Muffler

From glasspack, turbo, and chambered mufflers, to resonators, and more, which muffler is best for you? See our guide to learn more.

Exhaust Repair

Some basic info on the various exhaust options carried by Speedway Motors.

The Exhausting Search for Headers

Having issues fitting headers into your car/engine? This article provides helpful hints on ways to modify or add parts to make the headers fit in your specific car. Kevin W. explains his build experience with headers.

Ceramic Coated Headers

Watch our video on the ceramic coating process for Armor Hot Coating. Headers coated with Armor Hot Coating protect your car without sacrificing looks.

Choosing the Right Headers

Which size of headers should I use? Short or long tube headers? Etc. Learn how to answer these exhaust questions and choose the right header with our expert guide.

-11%

Flowmaster |

#37852556

Flowmaster 52556 50 Series Muffler, 2.50 In/Out

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$204.95

/each

$230.95

-8%

Flowmaster |

#378717894

Flowmaster 717894 FlowFX Cat-Back System, 19 GM 1500 Trucks, 5.3L

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$949.95

/each

$1,037.95

Flowmaster |

#426818161

Flowmaster 818161 24 Mustang 5.0L Cb-Otl- No Valve/Blk Tip

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$1,699.95

/kit

-5%

Flowmaster |

#378817748

Flowmaster 817748 American Thunder Axle-Back Exhaust System

Exhaust System Type:

Axle-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$849.95

/kit

$899.95

-7%

Flowmaster |

#378817397

Flowmaster 817397 American Thunder Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$1,117.95

/kit

$1,210.95

-7%

Flowmaster |

#378817403

Flowmaster 817403 Force II Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Single

Exhaust Tubing Diameter:

3 Inch

$727.95

/kit

$787.95

-6%

Flowmaster |

#425717986

Flowmaster 717986 Flow FX Cat-Back Exhaust System, 15-20 GM Tahoe

GTIN Code:

090127140079

Exhaust System Kit Type:

Direct Fit

$699.95

/each

$749.95

-8%

Flowmaster |

#378817745

Flowmaster 817745 Outlaw Axle-Back Exhaust System

Exhaust System Type:

Axle-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$749.95

/kit

$816.95

-7%

Flowmaster |

#378717829

Flowmaster 717829 FlowFX Cat-Back Exhaust, 2009-14 Challenger R/T

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$1,171.95

/each

$1,267.95

-11%

Flowmaster |

#378530722

Flowmaster 530722 70 Series Big Block II Muffler, 3.00 In/Out

Muffler Type:

Chambered

Inlet Diameter:

Outlet Diameter:

2.25"

$249.95

/each

$281.95

-7%

Flowmaster |

#378817841

Flowmaster 817841 Force II Axle-Back Exhaust Wrangler JL 2.0, 3.6

Exhaust System Type:

Axle-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$749.95

/each

$806.95

-5%

Flowmaster |

#378717834

Flowmaster 717834 FlowFX Cat-Back, 2015-19 Colorado/Canyon, 3.6L

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/4 Inch

$849.95

/each

$899.95

-8%

Flowmaster |

#378817506

Flowmaster 817506 Force II Axle-Back Exhaust System

Exhaust System Type:

Axle-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$999.95

/kit

$1,094.95

-8%

Flowmaster |

#378817749

Flowmaster 817749 American Thunder Axle-Back Exhaust System

Exhaust System Type:

Axle-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$949.95

/kit

$1,037.95

-6%

Flowmaster |

#378817451

Flowmaster 817451 Force II Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Single

Bed Side Type:

Short

$1,049.95

/kit

$1,124.95

-7%

Flowmaster |

#378817843

Flowmaster 817843 American Thunder Cat-Back '19 Ram 1500 5.7 Hemi

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$1,171.95

/each

$1,267.95

-5%

Flowmaster |

#378817432

Flowmaster 817432 American Thunder Exhaust Kit, 2005-12 Tacoma

Exhaust System Type:

Cat-Back

Single or Dual:

Single | Dual Exit

Exhaust Tubing Diameter:

2-1/2 Inch

$899.95

/kit

$956.95

-7%

Flowmaster |

#378817497

Flowmaster 817497 Force II Axle-Back Exhaust System

Exhaust System Type:

Axle-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/4 Inch

$849.95

/kit

$922.95

-5%

Flowmaster |

#378817691

Flowmaster 817691 Outlaw Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Single | Dual Exit

Exhaust Tubing Diameter:

3 Inch

$1,249.95

/kit

$1,325.95

-7%

Flowmaster |

#37817367

Flowmaster 17367 American Thunder Cat-Back Exhaust System 5.4L

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$749.95

/kit

$806.95

-11%

Flowmaster |

#3789530462

Flowmaster 9530462 Super 40 Series Delta Flow Muffler 3.00 In/Out

Muffler Type:

Chambered

Inlet Diameter:

Outlet Diameter:

2.5"

$173.95

/each

$195.95

-11%

Flowmaster |

#3789430512

Flowmaster 9430512 50 Series Delta Flow Muffler 3.00 In/ 2.50 Out

Muffler Type:

Chambered

Inlet Diameter:

Outlet Diameter:

2.5"

$173.95

/each

$195.95

$150 Off

Flowmaster |

#378817481

Flowmaster 817481 American Thunder Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$1,649.95

/kit

$1,799.95

-8%

Flowmaster |

#378717910

Flowmaster 717910 Flowfx Cat-Back Exhaust System, 17-23 Titan

GTIN Code:

700042039081

Exhaust System Kit Type:

Direct Fit

$999.95

/kit

$1,094.95

$125 Off

Flowmaster |

#378817560

Flowmaster 817560 Outlaw Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$1,449.95

/kit

$1,574.95

$119 Off

Flowmaster |

#378817709

Flowmaster 817709 American Thunder Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Single | Dual Exit

Exhaust Tubing Diameter:

3 Inch

$1,399.95

/kit

$1,518.95

-7%

Flowmaster |

#378717946

Flowmaster 717946 Flowfx Cat-Back Exhaust System, 94-01 Ram 1500

GTIN Code:

090127108895

Exhaust System Kit Type:

Direct Fit

$799.95

/kit

$863.95

-8%

Flowmaster |

#378817513

Flowmaster 817513 American Thunder Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Single

Exhaust Tubing Diameter:

3 Inch

$949.95

/kit

$1,037.95

$113 Off

Flowmaster |

#378817774

Flowmaster 817774 Outlaw Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$1,349.95

/each

$1,462.95

$138 Off

Flowmaster |

#378817730

Flowmaster 817730 American Thunder Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$1,549.95

/kit

$1,687.95

-8%

Flowmaster |

#378817552

Flowmaster 817552 Force II Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Single

Exhaust Tubing Diameter:

2-1/4 Inch

$949.95

/kit

$1,037.95

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Flowmaster Headers and Exhaust

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Products

Flowmaster 817567 American Thunder Cat-Back Exhaust System

Flowmaster 817707 Outlaw Extreme Cat-Back Exhaust System

Flowmaster 817494 American Thunder Cat-Back Exhaust System

Flowmaster 817483 American Thunder Axle-Back Exhaust System

Flowmaster 8430502 50 Series Delta Flow Muffler 3.00 In/ 2.50 Out

Related Articles

Flowmaster 52556 50 Series Muffler, 2.50 In/Out

Flowmaster 717894 FlowFX Cat-Back System, 19 GM 1500 Trucks, 5.3L

Flowmaster 818161 24 Mustang 5.0L Cb-Otl- No Valve/Blk Tip

Flowmaster 817748 American Thunder Axle-Back Exhaust System

Flowmaster 817397 American Thunder Cat-Back Exhaust System

Flowmaster 817403 Force II Cat-Back Exhaust System

Flowmaster 717986 Flow FX Cat-Back Exhaust System, 15-20 GM Tahoe

Flowmaster 817745 Outlaw Axle-Back Exhaust System

Flowmaster 717829 FlowFX Cat-Back Exhaust, 2009-14 Challenger R/T

Flowmaster 530722 70 Series Big Block II Muffler, 3.00 In/Out

Flowmaster 817841 Force II Axle-Back Exhaust Wrangler JL 2.0, 3.6

Flowmaster 717834 FlowFX Cat-Back, 2015-19 Colorado/Canyon, 3.6L

Flowmaster 817506 Force II Axle-Back Exhaust System

Flowmaster 817749 American Thunder Axle-Back Exhaust System

Flowmaster 817451 Force II Cat-Back Exhaust System

Flowmaster 817843 American Thunder Cat-Back '19 Ram 1500 5.7 Hemi

Flowmaster 817432 American Thunder Exhaust Kit, 2005-12 Tacoma

Flowmaster 817497 Force II Axle-Back Exhaust System

Flowmaster 817691 Outlaw Cat-Back Exhaust System

Flowmaster 17367 American Thunder Cat-Back Exhaust System 5.4L

Flowmaster 9530462 Super 40 Series Delta Flow Muffler 3.00 In/Out

Flowmaster 9430512 50 Series Delta Flow Muffler 3.00 In/ 2.50 Out

Flowmaster 817481 American Thunder Cat-Back Exhaust System

Flowmaster 717910 Flowfx Cat-Back Exhaust System, 17-23 Titan

Flowmaster 817560 Outlaw Cat-Back Exhaust System

Flowmaster 817709 American Thunder Cat-Back Exhaust System

Flowmaster 717946 Flowfx Cat-Back Exhaust System, 94-01 Ram 1500

Flowmaster 817513 American Thunder Cat-Back Exhaust System

Flowmaster 817774 Outlaw Cat-Back Exhaust System

Flowmaster 817730 American Thunder Cat-Back Exhaust System

Flowmaster 817552 Force II Cat-Back Exhaust System

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