Flowmaster Street Headers and Exhaust Parts

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-11%

Flowmaster |

#378842553

Flowmaster 842553 50 Series Delta Flow Muffler, 2.50 In/Out

Muffler Type:

Chambered

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$188.95

/each

$212.95

-8%

Flowmaster |

#37815385

Flowmaster 15385 Exhaust Tip, 2.5 in. Inlet I.D., 10 in. Length

(1)

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Polished

$75.35

/each

$81.95

-7%

Flowmaster |

#378815937

Flowmaster 815937 U-Fit Dual Exhaust Kit, Universal, 3 Inch

Exhaust System Type:

Header-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$623.95

/kit

$674.95

-8%

Flowmaster |

#37815807

Flowmaster 15807 Tailpipes, 2.5in Pair 65-73 Mustang

Outside Diameter:

2.50"

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Aluminized

$228.95

/kit

$248.95

-11%

Flowmaster |

#378942446

Flowmaster 942446 Super 44 Muffler-Offset Inlet-Centered Outlet, 2-1/4

(2)

Muffler Type:

Chambered

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$137.95

/each

$155.95

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.

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.

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.

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.

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.

Speedway Roadster Headers for a 305 Trike

In this Tech Tip, a customer asked about using a set of Small Block Chevy Sprint Roadster headers for his trike, powered by a stock 305.

Hooker Header Installation Guide

Hooker headers are installed in a 1967 Pontiac Firebird for increased power and a boost in performance. See how to work through fitment of the steering box, clutch Z bar and starter.

Project Chevelle Episode 12: Exhaust

In this episode we install a Flowmaster American Thunder dual exhaust kit behind our healthy 383 and go for a spin. Spoiler alert; it sounds awesome!

-7%

Flowmaster |

#378815814

Flowmaster 815814 Pre-Bent Tailpipes, 86-93 Ford Mustang 5.0L

Outside Diameter:

2.50"

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Raw

$386.95

/kit

$419.95

-6%

Flowmaster |

#378817940

Flowmaster 817940 American Thunder Crossmember-Back Exhaust

Exhaust System Kit Type:

Direct Fit

$1,049.95

/kit

$1,124.95

-9%

Flowmaster |

#37842542

Flowmaster 42542 40 Series Muffler, 2.50 In/Out

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$101.95

/each

$112.95

-11%

Flowmaster |

#378942448

Flowmaster Mufflers 942448 Super 44 2.25 In. Muffler, Offset In/Outlet

(1)

Muffler Type:

Chambered

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$137.95

/each

$155.95

-7%

Flowmaster |

#37817213

Flowmaster 17213 American Thunder Cat-Back Exhaust System Mustang

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$749.95

/kit

$806.95

-7%

Flowmaster |

#378717992

Flowmaster 717992 FlowFX Axle-back Exhaust System, 2016-22 Camaro

Sold in Quantity:

Kit

Exhaust System Kit Type:

Direct Fit

$584.95

/pair

$633.95

-7%

Flowmaster |

#378854040-10

Flowmaster 854040-10 Delta Force 40 Series Race Muffler, 4 In/Out

Muffler Type:

Chambered

Inlet Diameter:

Outlet Diameter:

$278.95

/each

$302.95

-7%

Flowmaster |

#378817139

Flowmaster 817139 American Thunder Exhaust Kit, 1969 F-Body

Exhaust System Type:

Crossmember-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$1,065.95

/kit

$1,153.95

-11%

Flowmaster |

#378942453

Flowmaster 942453 50 Series Delta Flow Muffler, 2.25 In/Out

(1)

Muffler Type:

Chambered

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$173.95

/each

$195.95

-8%

Flowmaster |

#37817149

Flowmaster 17149 American Thunder Exhaust Kit, 1970-74 Camaro/FB

Exhaust System Type:

Header-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$949.95

/kit

$1,037.95

-7%

Flowmaster |

#37815926

Flowmaster 15926 S-Bend Assortment, 2.5in set of 6

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.50"

$259.95

/kit

$281.95

-11%

Flowmaster |

#3788425454

Flowmaster 8425454 Stainless Super 44 Series Muffler, 2.50 In/Out

(1)

Muffler Type:

Chambered

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$139.95

/each

$157.95

-6%

Flowmaster |

#37815801

Flowmaster 15801 Tailpipes, 2.5in Pair Camaro & Nova

Inlet Size:

2.50"

Outside Diameter:

2.50"

Exhaust Tubing Diameter:

2-1/2 Inch

$249.95

/kit

$267.95

Flowmaster |

#37872198

Flowmaster 72198 FlowFX Muffler 3.00 Center In, 2.50 Dual Out

Muffler Type:

Perforated Tube w/Packing

Inlet Diameter:

Outlet Diameter:

2.5"

$119.95

/each

$163 Off

Flowmaster |

#378817609

Flowmaster 817609 American Thunder Cat-Back Exhaust System

Exhaust System Type:

Cat-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

3 Inch

$1,749.95

/kit

$1,912.95

-7%

Flowmaster |

#378815936

Flowmaster 815936 Pipe Kit, 2.5 in. Diameter

Exhaust System Type:

Header-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$584.95

/kit

$633.95

-7%

Flowmaster |

#37881083

Flowmaster 81083 Scavenger Series X-Pipe Kit, 16-23 Camaro SS Man

Exhaust Tubing Diameter:

3 Inch

Finish:

Polished

$749.95

/kit

$806.95

-11%

Flowmaster |

#378943045

Flowmaster 943045 Super 44 Series Muffler, 3.00 In/Out

Muffler Type:

Chambered

Inlet Diameter:

Outlet Diameter:

$137.95

/each

$155.95

-7%

Flowmaster |

#378717213

Flowmaster 717213 Flowfx Cat-Back Exhaust System, 96-93 Mustang

GTIN Code:

090127124031

Exhaust System Kit Type:

Direct Fit

$727.95

/kit

$787.95

-7%

Flowmaster |

#37815806

Flowmaster 15806 Tailpipes, 2.5in Pair 62-74 Mopar

Outside Diameter:

2.50"

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Aluminized

$265.95

/kit

$287.95

-6%

Flowmaster |

#378817695

Flowmaster 817695 Force II Exhaust Kit, 1968-69 Corvette Stingray

Exhaust System Type:

Crossmember-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$1,299.95

/kit

$1,383.95

$138 Off

Flowmaster |

#378817512

Flowmaster 817512 Force II Exhaust Kit, 2005-08 Corvette

Exhaust System Type:

Axle-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$1,549.95

/kit

$1,687.95

-11%

Flowmaster |

#378942540

Flowmaster 942540 40 Series Delta Flow Muffler, 2.50 In/Out

Muffler Type:

Chambered

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$149.95

/each

$168.95

-11%

Flowmaster |

#378942553

Flowmaster 942553 50 Series Delta Flow Muffler, 2.50 In/Out

Muffler Type:

Chambered

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$173.95

/each

$195.95

-11%

Flowmaster |

#37842443

Flowmaster Mufflers 42443 40 Series 2.25 In. Muffler, Offset In/Outlet

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$101.95

/each

$114.95

-11%

Flowmaster |

#378843048

Flowmaster 843048 Stainless Super 44 Series Muffler, 3.00 In/Out

Muffler Type:

Chambered

Inlet Diameter:

Outlet Diameter:

$139.95

/each

$157.95

-7%

Flowmaster |

#37815363

Flowmaster 15363 Exhaust Tip, 3 in. Inlet, 12 in. Long

Exhaust Tubing Diameter:

3 Inch

Finish:

Polished

$105.95

/each

$114.95

-8%

Flowmaster |

#37817273

Flowmaster 17273 American Thunder Exhaust Kit, 1964-66 Mustang

Exhaust System Type:

Header-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$999.95

/kit

$1,094.95

-11%

Flowmaster |

#378952446

Flowmaster 952446 Super 40 Muffler-Offset Inlet-Centered Outlet, 2-1/4

Muffler Type:

Chambered

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$152.95

/each

$172.95

-7%

Flowmaster |

#378815933

Flowmaster 815933 Scavenger Series Universal X-Pipe Kit, 3 Inch

Exhaust Tubing Diameter:

3 Inch

Finish:

Raw

$478.95

/kit

$518.95

-11%

Flowmaster |

#37852558

Flowmaster 52558 50 Series Muffler, 2.50 In/Out

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$199.95

/each

$224.95

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Flowmaster Street Headers and Exhaust Parts

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Products

Flowmaster 842553 50 Series Delta Flow Muffler, 2.50 In/Out

Flowmaster 15385 Exhaust Tip, 2.5 in. Inlet I.D., 10 in. Length

Flowmaster 815937 U-Fit Dual Exhaust Kit, Universal, 3 Inch

Flowmaster 15807 Tailpipes, 2.5in Pair 65-73 Mustang

Flowmaster 942446 Super 44 Muffler-Offset Inlet-Centered Outlet, 2-1/4

Related Articles

Flowmaster 815814 Pre-Bent Tailpipes, 86-93 Ford Mustang 5.0L

Flowmaster 817940 American Thunder Crossmember-Back Exhaust

Flowmaster 42542 40 Series Muffler, 2.50 In/Out

Flowmaster Mufflers 942448 Super 44 2.25 In. Muffler, Offset In/Outlet

Flowmaster 17213 American Thunder Cat-Back Exhaust System Mustang

Flowmaster 717992 FlowFX Axle-back Exhaust System, 2016-22 Camaro

Flowmaster 854040-10 Delta Force 40 Series Race Muffler, 4 In/Out

Flowmaster 817139 American Thunder Exhaust Kit, 1969 F-Body

Flowmaster 942453 50 Series Delta Flow Muffler, 2.25 In/Out

Flowmaster 17149 American Thunder Exhaust Kit, 1970-74 Camaro/FB

Flowmaster 15926 S-Bend Assortment, 2.5in set of 6

Flowmaster 8425454 Stainless Super 44 Series Muffler, 2.50 In/Out

Flowmaster 15801 Tailpipes, 2.5in Pair Camaro & Nova

Flowmaster 72198 FlowFX Muffler 3.00 Center In, 2.50 Dual Out

Flowmaster 817609 American Thunder Cat-Back Exhaust System

Flowmaster 815936 Pipe Kit, 2.5 in. Diameter

Flowmaster 81083 Scavenger Series X-Pipe Kit, 16-23 Camaro SS Man

Flowmaster 943045 Super 44 Series Muffler, 3.00 In/Out

Flowmaster 717213 Flowfx Cat-Back Exhaust System, 96-93 Mustang

Flowmaster 15806 Tailpipes, 2.5in Pair 62-74 Mopar

Flowmaster 817695 Force II Exhaust Kit, 1968-69 Corvette Stingray

Flowmaster 817512 Force II Exhaust Kit, 2005-08 Corvette

Flowmaster 942540 40 Series Delta Flow Muffler, 2.50 In/Out

Flowmaster 942553 50 Series Delta Flow Muffler, 2.50 In/Out

Flowmaster Mufflers 42443 40 Series 2.25 In. Muffler, Offset In/Outlet

Flowmaster 843048 Stainless Super 44 Series Muffler, 3.00 In/Out

Flowmaster 15363 Exhaust Tip, 3 in. Inlet, 12 in. Long

Flowmaster 17273 American Thunder Exhaust Kit, 1964-66 Mustang

Flowmaster 952446 Super 40 Muffler-Offset Inlet-Centered Outlet, 2-1/4

Flowmaster 815933 Scavenger Series Universal X-Pipe Kit, 3 Inch

Flowmaster 52558 50 Series Muffler, 2.50 In/Out

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