GMC K25 Headers and Exhaust Parts

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GMC K25

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Hedman Hedders |

#41829004

Hedman Hedders 29004 1-1/2 Inch 180 Degree 2 Inch Exhaust Pipe

Exhaust Tubing Diameter:

1-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

$18.99

/each

Hedman Hedders |

#41829003

Hedman Hedders 29003 1-1/2 Inch 120 Degree 2 Inch Exhaust Pipe

Exhaust Tubing Diameter:

1-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

$22.99

/each

Hedman Hedders |

#41825560

Hedman Hedders 25560 Muffler Turbo Muffler 2 Inch

Muffler Type:

Turbo

Inlet Diameter:

Outlet Diameter:

$97.26

/each

Hedman Hedders |

#41825580

Hedman Hedders 25580 Muffler Turbo Muffler 2-1/2

Muffler Type:

Turbo

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$101.99

/each

Hedman Hedders |

#41825660

Hedman Hedders 25660 Muffler Gasket-Style Header Muffler 2-1/4

Muffler Type:

Turbo

Inlet Diameter:

2.25"

Outlet Diameter:

$112.99

/each

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.

Tuning Tips after Header Installation

Making the switch from manifolds to headers is a popular performance upgrade, but it may take more than just bolting on the new part. We provide some tips and things to consider after you bolt on a new set of headers.

Tri-5 Headers with a Rack and Pinion System

In this Tech Tip, John explains the design behind a set of headers destined for a Tri-5 using a traditional rack and pinion style steering system.

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.

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.

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.

Exhaust Repair

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

Speedway Tech Talk - Derby Car Headers

Jeremy explains the different options of headers that Speedway Motors offers for Demolition Derby cars. Watch this video to see a variety of options and the benefits of certain headers.

Speedway Tech Talk - Maintaining Your Headers

Maintaining your headers is an important part of any hot rod. Pat gives some tips and demonstrates how well Purple Metal Polish works for keeping your headers looking great.

Hedman Hedders |

#41825662

Hedman Hedders 25662 Muffler Gasket-Style Header Muffler 2-1/2

Muffler Type:

Turbo

Inlet Diameter:

2.5"

Outlet Diameter:

$122.99

/each

Hedman Hedders |

#41829016

Hedman Hedders 29016 1-3/4 Inch 180 Degree 3 Inch Exhaust Pipe

Exhaust Tubing Diameter:

1-3/4 Inch

Exhaust Pipe Type:

Custom Tubing

$19.99

/each

Hedman Hedders |

#41829018

Hedman Hedders 29018 2 Inch 90 Degree 3 Inch Exhaust Pipe

Exhaust Tubing Diameter:

2 Inch

Exhaust Pipe Type:

Custom Tubing

$19.99

/each

Hedman Hedders |

#41821116

Hedman Hedders 21116 2-1/2 Inch Ball-Style Header Reducer 2 Inch

Sold in Quantity:

Each

Flange Style:

3-Bolt Ball and Socket

$25.12

/each

Hedman Hedders |

#41821122

Hedman Hedders 21122 3 Inch Ball-Style Header Reducers 2-1/4 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt Ball and Socket

$47.65

/pair

Hedman Hedders |

#41829074

Hedman Hedders 29074 3 Inch 180 Degree 4-1/2 Inch Exhaust Pipe

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Custom Tubing

$43.99

/each

Hedman Hedders |

#41829106

Hedman Hedders 29106 Muffler 2-1/2 Inch Header Collectors

Material Type:

Stainless Steel

Sold in Quantity:

Each

$72.99

/each

Hedman Hedders |

#41821130

Hedman Hedders 21130 Exhaust Manifold Riser, 3 Inch

Sold in Quantity:

Kit

GTIN Code:

732611211307

$63.62

/kit

Hedman Hedders |

#41821134

Hedman Hedders 21134 3 Inch Ball-Style Header Reducer 3 Inch

Sold in Quantity:

Each

Flange Style:

3-Bolt Ball and Socket

$25.57

/each

Hedman Hedders |

#41829020

Hedman Hedders 29020 2 Inch 120 Degree 3 Inch Exhaust Pipe

Exhaust Tubing Diameter:

2 Inch

Exhaust Pipe Type:

Custom Tubing

$22.99

/each

Hedman Hedders |

#41818700

Hedman Hedders 18700 Header X-Tensions 2 1/2 Inch, S-Bend

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Raw

Tube Length:

17"

$48.99

/pair

Hedman Hedders |

#41818701

Hedman Hedders 18701 Header X-Tensions 3 Inch, Gasket Style

Exhaust Tubing Diameter:

3 Inch

Finish:

Raw

Tube Length:

23"

$70.58

/pair

Hedman Hedders |

#41818715

Hedman Hedders 18715 Header X-Tensions 2 1/2 Inch, Gasket Style

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Raw

Tube Length:

17"

$55.99

/pair

Hedman Hedders |

#41818718

Hedman Hedders 18718 Header X-Tensions 3 Inch In, 3 Inch Out

Exhaust Tubing Diameter:

3 Inch

Finish:

Raw

Tube Length:

23"

$68.99

/pair

Hedman Hedders |

#41829030

Hedman Hedders 29030 2-1/2 Inch 90 Degree 4 Inch Exhaust Pipe

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

$25.99

/each

Hedman Hedders |

#41829036

Hedman Hedders 29036 3 Inch 90 Degree 4-1/2 Inch Exhaust Pipe

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Custom Tubing

$30.99

/each

Hedman Hedders |

#41829038

Hedman Hedders 29038 3 Inch 120 Degree 4-1/2 Inch Exhaust Pipe

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Custom Tubing

$31.99

/each

Hedman Hedders |

#41818809

Hedman Hedders 18809 Ball-Style Header X-Tensions For 2-1/4 Inch

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Raw

Tube Length:

17"

$43.40

/pair

Hedman Hedders |

#41829042

Hedman Hedders 29042 1-1/2 Inch 90 Degree 2 Inch Exhaust Pipe

Exhaust Tubing Diameter:

1-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

$43.99

/each

Hedman Hedders |

#41829006

Hedman Hedders 29006 1-5/8 Inch 90 Degree 2-1/2 Inch Exhaust Pipe

Exhaust Tubing Diameter:

1-5/8 Inch

Exhaust Pipe Type:

Custom Tubing

$20.99

/each

Hedman Hedders |

#41829008

Hedman Hedders 29008 1-5/8 Inch 120 Degree 2-1/2 in Exhaust Pipe

Exhaust Tubing Diameter:

1-5/8 Inch

Exhaust Pipe Type:

Custom Tubing

$18.06

/each

Hedman Hedders |

#41829010

Hedman Hedders 29010 1-5/8 Inch 180 Degree 2-1/2 in Exhaust Pipe

Exhaust Tubing Diameter:

1-5/8 Inch

Exhaust Pipe Type:

Custom Tubing

$17.49

/each

Hedman Hedders |

#41829013

Hedman Hedders 29013 1-3/4 Inch 90 Degree 3 Inch Exhaust Pipe

Exhaust Tubing Diameter:

1-3/4 Inch

Exhaust Pipe Type:

Custom Tubing

$26.99

/each

Hedman Hedders |

#41829040

Hedman Hedders 29040 3 Inch 180 Degree 4-1/2 Inch Exhaust Pipe

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Custom Tubing

$30.99

/each

Hedman Hedders |

#41829044

Hedman Hedders 29044 1-1/2 Inch 180 Degree 2 Inch Exhaust Pipe

Exhaust Tubing Diameter:

1-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

$39.99

/each

Hedman Hedders |

#41829048

Hedman Hedders 29048 1-3/4 Inch 90 Degree 3 Inch Exhaust Pipe

Exhaust Tubing Diameter:

1-3/4 Inch

Exhaust Pipe Type:

Custom Tubing

$53.99

/each

-9%

Patriot Exhaust |

#447H7952

Patriot Exhaust H7952 2-Bolt Collector Gaskets, 2-1/2 Inch

(1)

Inside Diameter:

2.5"

Collector Diameter:

2-1/2 Inch

Flange Style:

2-Bolt

$12.06

/pair

$13.27

-9%

Doug's Headers |

#447CG9006

Doug's Headers CG9006 3 bolt Collector Gaskets, 3 Inch

(1)

Inside Diameter:

Collector Diameter:

3 Inch

Flange Style:

3-Bolt

$15.68

/pair

$17.25

Doug's DEC6230 Electric Cut-Out Replacement Dual Wiring Harness

Doug's Headers |

#447DEC6230

Doug's DEC6230 Electric Cut-Out Replacement Dual Wiring Harness

Sold in Quantity:

Each

$57.60

/each

-9%

Patriot Exhaust |

#447H6924

Patriot Exhaust H6924 304 SS Exhaust Pipe J-Bends, 2-1/2 Inch

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.50"

$82.33

/each

$90.56

-9%

Patriot Exhaust |

#447H7717

Patriot Exhaust H7717 Tubing, Stainless Steel, 3 Inch, 16 Gauge

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

3.00"

$126.27

/each

$138.90

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GMC K25 Headers and Exhaust Parts

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Part

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Products

Hedman Hedders 29004 1-1/2 Inch 180 Degree 2 Inch Exhaust Pipe

Hedman Hedders 29003 1-1/2 Inch 120 Degree 2 Inch Exhaust Pipe

Hedman Hedders 25560 Muffler Turbo Muffler 2 Inch

Hedman Hedders 25580 Muffler Turbo Muffler 2-1/2

Hedman Hedders 25660 Muffler Gasket-Style Header Muffler 2-1/4

Related Articles

Hedman Hedders 25662 Muffler Gasket-Style Header Muffler 2-1/2

Hedman Hedders 29016 1-3/4 Inch 180 Degree 3 Inch Exhaust Pipe

Hedman Hedders 29018 2 Inch 90 Degree 3 Inch Exhaust Pipe

Hedman Hedders 21116 2-1/2 Inch Ball-Style Header Reducer 2 Inch

Hedman Hedders 21122 3 Inch Ball-Style Header Reducers 2-1/4 Inch

Hedman Hedders 29074 3 Inch 180 Degree 4-1/2 Inch Exhaust Pipe

Hedman Hedders 29106 Muffler 2-1/2 Inch Header Collectors

Hedman Hedders 21130 Exhaust Manifold Riser, 3 Inch

Hedman Hedders 21134 3 Inch Ball-Style Header Reducer 3 Inch

Hedman Hedders 29020 2 Inch 120 Degree 3 Inch Exhaust Pipe

Hedman Hedders 18700 Header X-Tensions 2 1/2 Inch, S-Bend

Hedman Hedders 18701 Header X-Tensions 3 Inch, Gasket Style

Hedman Hedders 18715 Header X-Tensions 2 1/2 Inch, Gasket Style

Hedman Hedders 18718 Header X-Tensions 3 Inch In, 3 Inch Out

Hedman Hedders 29030 2-1/2 Inch 90 Degree 4 Inch Exhaust Pipe

Hedman Hedders 29036 3 Inch 90 Degree 4-1/2 Inch Exhaust Pipe

Hedman Hedders 29038 3 Inch 120 Degree 4-1/2 Inch Exhaust Pipe

Hedman Hedders 18809 Ball-Style Header X-Tensions For 2-1/4 Inch

Hedman Hedders 29042 1-1/2 Inch 90 Degree 2 Inch Exhaust Pipe

Hedman Hedders 29006 1-5/8 Inch 90 Degree 2-1/2 Inch Exhaust Pipe

Hedman Hedders 29008 1-5/8 Inch 120 Degree 2-1/2 in Exhaust Pipe

Hedman Hedders 29010 1-5/8 Inch 180 Degree 2-1/2 in Exhaust Pipe

Hedman Hedders 29013 1-3/4 Inch 90 Degree 3 Inch Exhaust Pipe

Hedman Hedders 29040 3 Inch 180 Degree 4-1/2 Inch Exhaust Pipe

Hedman Hedders 29044 1-1/2 Inch 180 Degree 2 Inch Exhaust Pipe

Hedman Hedders 29048 1-3/4 Inch 90 Degree 3 Inch Exhaust Pipe

Patriot Exhaust H7952 2-Bolt Collector Gaskets, 2-1/2 Inch

Doug's Headers CG9006 3 bolt Collector Gaskets, 3 Inch

Doug's DEC6230 Electric Cut-Out Replacement Dual Wiring Harness

Patriot Exhaust H6924 304 SS Exhaust Pipe J-Bends, 2-1/2 Inch

Patriot Exhaust H7717 Tubing, Stainless Steel, 3 Inch, 16 Gauge