GMC Street Header Reducers

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GMC

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Street

Products

Speedway Motors |

#91013754

Header Reducer Kit, 3 to 2-1/2 Inch

(34)

Material Type:

Steel

Flange Style:

3-Bolt

$24.99

/pair

Speedway 3-Bolt Header Collector Reducer Kit, 2-1/2 to 2 Inch

Speedway Motors |

#91013751

Speedway 3-Bolt Header Collector Reducer Kit, 2-1/2 to 2 Inch

(45)

Material Type:

Steel

Flange Style:

3-Bolt

$32.99

/pair

3-Bolt Exhaust Flange Collector w/ O2 Bung, 2.5-inch SS

Speedway Motors |

#9302504

3-Bolt Exhaust Flange Collector w/ O2 Bung, 2.5-inch SS

(1)

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$59.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5-inch

Speedway Motors |

#9302501

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5-inch

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$69.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.5-in SS

Speedway Motors |

#9302514

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.5-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$118.99

/pair

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.

GM Rally Wheels

Choosing new wheels for a GMC Chevrolet truck. This project uses Speedway Motors GM Rally Wheels and new tires to enhance the appearance of the truck.

Replacing GM Rear End Spherical Bushings

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

Modifying Axles to Lower a Hot Rod

Learn how to lower a hot rod by modifying the axles and some history behind early hop ups. This project features a Ford axle with wishbones for a Model A.

GM Body Styles

Need a little help Identifying GM Body Styles 1964-1972? Click Here!

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.0/2.5-in SS

Speedway Motors |

#9302506

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.0/2.5-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$56.99

/pair

Speedway Motors |

#91013752

Header Reducer Kit, 3 to 2-1/4 Inch

(20)

Material Type:

Steel

Flange Style:

3-Bolt

$29.99

/pair

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.5/3.0-in SS

Speedway Motors |

#9302517

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.5/3.0-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$59.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5-inch SS

Speedway Motors |

#9302502

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5-inch SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$110.99

/pair

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.5/2.5-in SS

Speedway Motors |

#9302507

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.5/2.5-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$44.99

/pair

Speedway Motors |

#91013753

Header Reducer Kit, 3-1/2 to 2-1/2 Inch

(18)

Material Type:

Steel

Flange Style:

3-Bolt

$34.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.5-in

Speedway Motors |

#9302510

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.5-in

(1)

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$94.99

/pair

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.0/2.25-in SS

Speedway Motors |

#9302505

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.0/2.25-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$53.99

/pair

-9%

JBA 1650-1ST Stainless 1650 EFI Starter Tubes, 2.5

JBA Headers |

#44716501ST

JBA 1650-1ST Stainless 1650 EFI Starter Tubes, 2.5

Sold in Quantity:

Pair

Flange Style:

2-Bolt

$81.25

/set

$89.38

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in

Speedway Motors |

#9302518

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$114.99

/pair

-9%

Patriot Exhaust |

#447H7239

Patriot Exhaust H7239 Collector Reducers, 2-1/2 Inch

(13)

Material Type:

Steel

Flange Style:

3-Bolt

$39.49

/pair

$43.44

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in SS

Speedway Motors |

#9302519

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$146.99

/pair

Stainless Header Reducer Kit, 2-1/2 to 2 Inch

Speedway Motors |

#91013755

Stainless Header Reducer Kit, 2-1/2 to 2 Inch

(15)

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$47.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung,2.5/2.0-inch

Speedway Motors |

#9302508

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung,2.5/2.0-inch

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$85.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.25-in

Speedway Motors |

#9302509

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.25-in

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$90.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/2.5-in

Speedway Motors |

#9302511

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/2.5-in

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$100.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.25-in SS

Speedway Motors |

#9302513

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.25-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$113.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5/2.0-in SS

Speedway Motors |

#9302512

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5/2.0-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$110.99

/pair

-9%

JBA 1650ST Stainless Steel 1650 Starter Tubes

JBA Headers |

#4471650ST

JBA 1650ST Stainless Steel 1650 Starter Tubes

(3)

Sold in Quantity:

Pair

Flange Style:

2-Bolt

$70.28

/set

$77.31

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/2.5-in SS

Speedway Motors |

#9302515

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/2.5-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$124.99

/pair

-7%

Flowtech Exhaust |

#42510005FLT

Flowtech 10005FLT Reducer Kit, One Pair, 3-Bolt

(1)

Material Type:

Steel

Flange Style:

3-Bolt

$36.35

/pair

$39.32

-7%

Flowtech 10004FLT Reducer Kit, One Pair, 3-Bolt

Flowtech Exhaust |

#42510004FLT

Flowtech 10004FLT Reducer Kit, One Pair, 3-Bolt

(1)

Material Type:

Steel

Flange Style:

3-Bolt

$36.35

/pair

$39.32

Spectre Performance |

#4654641

Spectre 4641 Header Reducer Kit, 3 Inch Inlet, 2-1/2 Inch Outlet, Pair

(2)

Material Type:

Steel

Flange Style:

3-Bolt

$39.99

/pair

-7%

Flowmaster |

#37815925

Flowmaster 15925 Ball Flange 3 Inch Collector to 2.5 Inch

(5)

Material Type:

Steel

Flange Style:

2-Bolt

$207.95

/pair

$224.95

-9%

Patriot Exhaust |

#447H7237

Patriot Exhaust H7237 Collector Reducers, 3 Inch

(2)

Material Type:

Steel

Flange Style:

3-Bolt

$49.37

/pair

$54.31

-9%

Patriot Exhaust |

#447H7244

Patriot Exhaust H7244 Collector Reducers, 3 Inch

(1)

Material Type:

Steel

Flange Style:

3-Bolt

$49.37

/pair

$54.31

Spectre Performance |

#4654642

Spectre 4642 Header Reducer Kit, 2-1/2 Inlet, 2-1/4 Inch Outlet, Pair

(2)

Material Type:

Steel

Flange Style:

3-Bolt

$34.99

/pair

-9%

Patriot Exhaust |

#447H7242

Patriot Exhaust H7242 Collector Reducers, 2-1/2 Inch

(3)

Material Type:

Steel

Flange Style:

3-Bolt

$43.88

/pair

$48.27

-7%

Flowmaster |

#37815923

Flowmaster 15923 Ball Flange 3.5 Inch Collector to 3 Inch

Material Type:

Steel

Flange Style:

2-Bolt

$265.95

/pair

$287.95

-7%

Flowmaster |

#378R3025

Flowmaster R3025 Venturi Reducer, 3 in. Inlet

Diameter Small End:

2.5"

Sold in Quantity:

Pair

$51.95

/pair

$56.19

-8%

Hooker 11026HKR Reducer, 3 Bolt Flange, 2.5 Inch Diameter

Hooker Headers |

#42511026HKR

Hooker 11026HKR Reducer, 3 Bolt Flange, 2.5 Inch Diameter

(1)

Material Type:

Steel

Flange Style:

3-Bolt

$74.35

/pair

$80.95

Showing 1 - 36 of 99 results

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GMC Street Header Reducers

Model

Flange Style

Brand

Application

Availability

Discounts

Price

Customer Rating

Products

Header Reducer Kit, 3 to 2-1/2 Inch

Speedway 3-Bolt Header Collector Reducer Kit, 2-1/2 to 2 Inch

3-Bolt Exhaust Flange Collector w/ O2 Bung, 2.5-inch SS

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5-inch

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.5-in SS

Related Articles

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.0/2.5-in SS

Header Reducer Kit, 3 to 2-1/4 Inch

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.5/3.0-in SS

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5-inch SS

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.5/2.5-in SS

Header Reducer Kit, 3-1/2 to 2-1/2 Inch

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.5-in

3-Bolt Exhaust Flange Collector w/ O2 Bung, 3.0/2.25-in SS

JBA 1650-1ST Stainless 1650 EFI Starter Tubes, 2.5

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in

Patriot Exhaust H7239 Collector Reducers, 2-1/2 Inch

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in SS

Stainless Header Reducer Kit, 2-1/2 to 2 Inch

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung,2.5/2.0-inch

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.25-in

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/2.5-in

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.25-in SS

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5/2.0-in SS

JBA 1650ST Stainless Steel 1650 Starter Tubes

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/2.5-in SS

Flowtech 10005FLT Reducer Kit, One Pair, 3-Bolt

Flowtech 10004FLT Reducer Kit, One Pair, 3-Bolt

Spectre 4641 Header Reducer Kit, 3 Inch Inlet, 2-1/2 Inch Outlet, Pair

Flowmaster 15925 Ball Flange 3 Inch Collector to 2.5 Inch

Patriot Exhaust H7237 Collector Reducers, 3 Inch

Patriot Exhaust H7244 Collector Reducers, 3 Inch

Spectre 4642 Header Reducer Kit, 2-1/2 Inlet, 2-1/4 Inch Outlet, Pair

Patriot Exhaust H7242 Collector Reducers, 2-1/2 Inch

Flowmaster 15923 Ball Flange 3.5 Inch Collector to 3 Inch

Flowmaster R3025 Venturi Reducer, 3 in. Inlet

Hooker 11026HKR Reducer, 3 Bolt Flange, 2.5 Inch Diameter

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