GMC K25 Headers and Exhaust Parts

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GMC K25

Products

Intellitronix |

#188M9011R

Intellitronix M9011R LED Digital Boost, Red

Gauge Style:

Digital

Gauge Range:

0-30 PSI

Gauge Face Color:

Black

$115.63

/each

Intellitronix |

#188C9017G

Intellitronix C9017G LED Digital EGT Gauge, Green

Gauge Face Color:

Black

Bezel Finish:

Black

Lighted:

Yes

$214.48

/each

Beyea |

#196300

Beyea TD-3 Turn Down Exhaust Tip, Weld-On, 3 Inch Diameter, Steel

Exhaust Tubing Diameter:

3 Inch

Finish:

Raw

Inlet Diameter:

$24.99

/each

$221 Off

Flowtech 31730-1FLT LS Swap Exhaust Manifolds, Silver Ceramic

Flowtech Exhaust |

#772317301FLT

Flowtech 31730-1FLT LS Swap Exhaust Manifolds, Silver Ceramic

(1)

Finish:

Ceramic Coated

Sold in Quantity:

Pair

$332.95

/kit

$553.95

-10%

Borla |

#21540085

Borla 40085 XR-1® Sportsman Muffler, 3 Inch Centered In/Out

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$146.99

/each

$163.99

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.

-10%

Borla |

#21540842S

Borla® 40842S S-Type Muffler, Round, 2.5 Inch Inlet/Outlet

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$193.99

/each

$216.99

DEI 10226 Adapt-A-Shield XT - 12" x 17-1/2"

DEI |

#35610226

DEI 10226 Adapt-A-Shield XT - 12" x 17-1/2"

Overall Width:

17.5"

Sold in Quantity:

Each

$24.99

/each

DEi 010451 Titanium Exhaust Pipe Heat Shield, 6 Inch x 2 Ft.

DEI |

#35610451

DEi 010451 Titanium Exhaust Pipe Heat Shield, 6 Inch x 2 Ft.

(4)

GTIN Code:

607078104519

$61.99

/each

Speedway Motors |

#91013839

Header Collector, 1 7/8 Inch Primaries

(2)

Material Type:

Steel

Finish:

Natural

Sold in Quantity:

Each

$34.99

/each

Stainless Steel Exhaust Pipe Mandrel U-Bends, 2-1/2 Inch

Speedway Motors |

#91013867

Stainless Steel Exhaust Pipe Mandrel U-Bends, 2-1/2 Inch

(4)

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.50"

as low as

$60.99

/each

Stainless Steel Exhaust Pipe Mandrel U-Bends, 1-1/2 Inch O.D.

Speedway Motors |

#91013860

Stainless Steel Exhaust Pipe Mandrel U-Bends, 1-1/2 Inch O.D.

(4)

Exhaust Tubing Diameter:

1-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.50"

$34.99

/each

Stainless Steel Exhaust Pipe Mandrel U-Bends, 1-7/8 Inch O.D.

Speedway Motors |

#91013863

Stainless Steel Exhaust Pipe Mandrel U-Bends, 1-7/8 Inch O.D.

(5)

Exhaust Tubing Diameter:

1-7/8 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.88"

$46.99

/each

Stainless Steel Exhaust Pipe Mandrel U-Bends, 2 Inch O.D.

Speedway Motors |

#91013864

Stainless Steel Exhaust Pipe Mandrel U-Bends, 2 Inch O.D.

(5)

Exhaust Tubing Diameter:

2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.00"

as low as

$47.99

/each

Tight-Fit Small Block Chevy ZZ-4 Block Hugger Headers, AHC Coated

Speedway Motors |

#9300104H

Tight-Fit Small Block Chevy ZZ-4 Block Hugger Headers, AHC Coated

(7)

Header Tube Type:

Block Hugger

Exhaust Port Shape:

Oval

Flange Style:

Standard

$329.99

/pair

-7%

Hooker 2301HKR Block Hugger Headers for ZZ4 Crate Motor, Ceramic Coat

Hooker Headers |

#9302300H

Hooker 2301HKR Block Hugger Headers for ZZ4 Crate Motor, Ceramic Coat

Header Tube Type:

Block Hugger

Exhaust Port Shape:

D-port

Flange Style:

Standard

$727.95

/pair

$787.95

-9%

Patriot Exhaust |

#9308065

Patriot Exhaust Tight Tuck S/B Chevy Block Hugger Headers

(6)

Header Tube Type:

Block Hugger

Exhaust Port Shape:

Oval

Flange Style:

Standard

as low as

$527.07

/pair

$579.78

-9%

Patriot Exhaust |

#9308080

Patriot Exhaust E-Rod LS Tube Headers, Steel

(1)

Header Tube Type:

Block Hugger

Exhaust Port Shape:

Round

Flange Style:

Standard

as low as

$496.75

/pair

$546.43

Hedman Hedders |

#41818804

Hedman Hedders 18804 Gasket-Style Header X-Tensions 2-1/2 Inch

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Raw

Tube Length:

17"

$49.99

/pair

Hedman Hedders |

#41818808

Hedman Hedders 18808 Ball-Style Header X-Tensions For 2-1/4 Inch

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Raw

Tube Length:

17"

$42.45

/pair

Hedman Hedders |

#41821103

Hedman Hedders 21103 3 Inch Steel Header Reducer 2-1/2 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$36.99

/pair

-17%

Longacre |

#47547848

Longacre® 52-47848 Stainless Header Wrap Lock Ties, 14 Inch

$57.99

/set

$69.99

Quick Time Performance |

#91610227

QTP QTEC60 QTEC Electric Cutout, Dual

Exhaust Tubing Diameter:

3 Inch

Finish:

Raw

Inlet Diameter (Fraction):

$430.99

/pair

Quick Time Performance |

#91610217

QTP QTEC225 QTEC Electric Cutout, Each

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Raw

Inlet Diameter (Fraction):

2-1/4"

$217.99

/each

Quick Time Performance |

#91610226

QTP QTEC50 QTEC Electric Cutout, Dual

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Raw

Inlet Diameter (Fraction):

2-1/2"

$430.99

/pair

Speedway Motors |

#91606252

Mild Steel V-Band Exhaust Flanges

(7)

Exhaust Clamp Type:

V-Band

$27.49

/each

FAST Fuel Air Spark Technology |

#28230169

FAST 30169 02/Oxygen 18MM x 1.50 Sensor Plug Fitting, Each

GTIN Code:

036584133704

$19.95

/each

AutoMeter |

#182880031

AutoMeter 880031 Mopar Digital Stepper Motor Pyrometer Gauge

Gauge Face Color:

White

Bezel Finish:

Brushed Aluminum

Overall Diameter:

2-1/16

$257.99

/each

Rebate

Flowtech 11730FLT LS Swap Exhaust Manifolds, Natural Cast Finish

Flowtech Exhaust |

#72211730FLT

Flowtech 11730FLT LS Swap Exhaust Manifolds, Natural Cast Finish

(1)

Finish:

Natural

Sold in Quantity:

Pair

$247.95

/kit

$275.95

Rebate

Flowtech 50051FLT Raptor Turbo Performance Muffler

Flowtech Exhaust |

#42550051FLT

Flowtech 50051FLT Raptor Turbo Performance Muffler

(6)

Muffler Type:

Turbo-style/Straight-through

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$49.85

/each

$55.39

Rebate

Flowtech 50052FLT Raptor Turbo Performance Muffler

Flowtech Exhaust |

#42550052FLT

Flowtech 50052FLT Raptor Turbo Performance Muffler

(5)

Muffler Type:

Turbo-style/Straight-through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$49.85

/each

$55.39

Rebate

Flowtech 50230FLT Purple Hornies 3-Hole Header Muffler, 3 Inch Inlet

Flowtech Exhaust |

#42550230FLT

Flowtech 50230FLT Purple Hornies 3-Hole Header Muffler, 3 Inch Inlet

(6)

Muffler Type:

Glass Pack

Inlet Diameter:

Outlet Diameter:

2.25"

$46.76

/each

$51.95

Rebate

Flowtech 50232FLT Purple Hornies 3-Hole Jeep Header Muffler

Flowtech Exhaust |

#42550232FLT

Flowtech 50232FLT Purple Hornies 3-Hole Jeep Header Muffler

(13)

Muffler Type:

Glass Pack

Inlet Diameter:

$163.75

/pair

$181.95

Rebate

Flowtech 50250FLT Red Hot Glass Pack Muffler, Slip-Fit, 2 Inch Inlet

Flowtech Exhaust |

#42550250FLT

Flowtech 50250FLT Red Hot Glass Pack Muffler, Slip-Fit, 2 Inch Inlet

(10)

Muffler Type:

Glass Pack

Inlet Diameter:

Outlet Diameter:

$32.57

/each

$36.19

Rebate

Flowtech 11575FLT Shorty Headers, GM LS Universal, Natural

Flowtech Exhaust |

#42511575FLT

Flowtech 11575FLT Shorty Headers, GM LS Universal, Natural

(5)

Header Tube Type:

Shorty

Exhaust Port Shape:

Round

Flange Style:

Standard

$279.95

/each

$311.95

Rebate

APR MUH0014 Premium Sound Absorption Muffler, Oval, 76mm/3" In

APR |

#425MUH0014

APR MUH0014 Premium Sound Absorption Muffler, Oval, 76mm/3" In

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$341.95

/each

$380.95

Rebate

APR MUH0021 Premium Helmholtz Resonator, 12.24 X 9.45 X 4.33 In

APR |

#425MUH0021

APR MUH0021 Premium Helmholtz Resonator, 12.24 X 9.45 X 4.33 In

Inlet Diameter:

3.00"

Outlet Diameter:

3.00"

Overall Length:

12.240"

$333.95

/each

$371.95

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GMC K25 Headers and Exhaust Parts

Year

Subcategory

Part

Brand

Transmission Family

Availability

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Discounts

Price

Customer Rating

Products

Intellitronix M9011R LED Digital Boost, Red

Intellitronix C9017G LED Digital EGT Gauge, Green

Beyea TD-3 Turn Down Exhaust Tip, Weld-On, 3 Inch Diameter, Steel

Flowtech 31730-1FLT LS Swap Exhaust Manifolds, Silver Ceramic

Borla 40085 XR-1® Sportsman Muffler, 3 Inch Centered In/Out

Related Articles

Borla® 40842S S-Type Muffler, Round, 2.5 Inch Inlet/Outlet

DEI 10226 Adapt-A-Shield XT - 12" x 17-1/2"

DEi 010451 Titanium Exhaust Pipe Heat Shield, 6 Inch x 2 Ft.

Header Collector, 1 7/8 Inch Primaries

Stainless Steel Exhaust Pipe Mandrel U-Bends, 2-1/2 Inch

Stainless Steel Exhaust Pipe Mandrel U-Bends, 1-1/2 Inch O.D.

Stainless Steel Exhaust Pipe Mandrel U-Bends, 1-7/8 Inch O.D.

Stainless Steel Exhaust Pipe Mandrel U-Bends, 2 Inch O.D.

Tight-Fit Small Block Chevy ZZ-4 Block Hugger Headers, AHC Coated

Hooker 2301HKR Block Hugger Headers for ZZ4 Crate Motor, Ceramic Coat

Patriot Exhaust Tight Tuck S/B Chevy Block Hugger Headers

Patriot Exhaust E-Rod LS Tube Headers, Steel

Hedman Hedders 18804 Gasket-Style Header X-Tensions 2-1/2 Inch

Hedman Hedders 18808 Ball-Style Header X-Tensions For 2-1/4 Inch

Hedman Hedders 21103 3 Inch Steel Header Reducer 2-1/2 Inch

Longacre® 52-47848 Stainless Header Wrap Lock Ties, 14 Inch

QTP QTEC60 QTEC Electric Cutout, Dual

QTP QTEC225 QTEC Electric Cutout, Each

QTP QTEC50 QTEC Electric Cutout, Dual

Mild Steel V-Band Exhaust Flanges

FAST 30169 02/Oxygen 18MM x 1.50 Sensor Plug Fitting, Each

AutoMeter 880031 Mopar Digital Stepper Motor Pyrometer Gauge

Flowtech 11730FLT LS Swap Exhaust Manifolds, Natural Cast Finish

Flowtech 50051FLT Raptor Turbo Performance Muffler

Flowtech 50052FLT Raptor Turbo Performance Muffler

Flowtech 50230FLT Purple Hornies 3-Hole Header Muffler, 3 Inch Inlet

Flowtech 50232FLT Purple Hornies 3-Hole Jeep Header Muffler

Flowtech 50250FLT Red Hot Glass Pack Muffler, Slip-Fit, 2 Inch Inlet

Flowtech 11575FLT Shorty Headers, GM LS Universal, Natural

APR MUH0014 Premium Sound Absorption Muffler, Oval, 76mm/3" In

APR MUH0021 Premium Helmholtz Resonator, 12.24 X 9.45 X 4.33 In