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Flowmaster Force II Cat-Back Exhaust System with Super Muffler

(2004-2014 Ford F-150; 2015-2020 Chevrolet Tahoe; 2000-2003 Dodge Dakota; 2015-2020 GMC Yukon; 2015-2016 GMC Yukon XL; 2006-2008 Lincoln Mark LT)

Manufacturer

Picture for manufacturer Flowmaster

Part Number

4 part numbers · from $571.95
5 reviews
Sale Price

from $571.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Flowmaster Force II Cat-Back Exhaust System pairs a free-flowing, mandrel-bent tubing layout with the Flowmaster Super Muffler. It gives your vehicle a deep, aggressive exhaust tone and better exhaust flow. This cat-back exhaust system replaces the factory exhaust from the catalytic converter rearward.

Key Features:

  • Aggressive sound: The Super Muffler is known for a deep, muscular tone that is louder than stock.
  • Improved exhaust flow: Mandrel-bent tubing keeps the pipe diameter consistent through the bends. This reduces restriction compared with the factory system.
  • Durable construction: Flowmaster builds its exhaust components for long service life and dependable performance.
  • Bolt-on design: The system installs behind the catalytic converter and keeps the factory catalytic converters in place.
  • Flowmaster engineering: Flowmaster has long experience in performance mufflers and exhaust systems, and the brand is well known for its sound.

This is a good upgrade for drivers who want a more aggressive exhaust note and a performance-oriented exhaust system. Each variant in the Force II line follows the same design approach, with its own configuration and specifications listed on the individual item pages.

Products specifications

Fits

2004-2014 Ford F-150; 2015-2020 Chevrolet Tahoe; 2000-2003 Dodge Dakota; 2015-2020 GMC Yukon; 2015-2016 GMC Yukon XL; 2006-2008 Lincoln Mark LT

Select yours to see vehicle-specific options.

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4 items

Picture of Flowmaster 817509 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 817509 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 817509 Force II Cat-Back Exhaust System with Super Muffler - 50
Flowmaster 817509 Force II Cat-Back Exhaust System with Super Muffler - 50
Exhaust
Description
Specifications
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds)
California Proposition 65 Chemical NameNickel (Metallic)
California Proposition 65 Chemical Name 1Nickel (metallic)
California Proposition 65 Chemical Name 2Chromium (hexavalent compounds)
California Proposition 65 RequiredYes
Catalytic Converter Quantity0
CategoryExhaust
Clamping TypeFlat Band
Clamps IncludedYes
Drive4WD
Drive2WD
Emission Code5
Exhaust SeriesForce II
Exhaust Tip IntercooledNo
Exhaust Tip Quantity1
Exhaust TypeDual
Exit PositionSingle Side
Exit StyleSingle Out Side
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat Shield AttachedNo
Heat Shield IncludedNo
Inlet Diameter3.00
Inlet Inside Diameter3.000 in.
MaterialStainless Steel
Muffler Body Material409 Stainless Steel
Muffler Count1
muffler part numberKit Only
Muffler Quantity1
Muffler SeriesSuper 50 Series
Outlet Diameter3.000 in.
Outlet Outside Diameter3.000 in.
Pipe ColorSilver
Pipe Material409 Stainless Steel
Product TypeExhaust System
Single or DualSingle
Sound LevelModerate/Mild
Sub CategoryExhaust and Tail Pipes
System TypeCat Back
Tail Pipe Diameter3.000 in.
Tail Pipe QuantitySingle
Tail Pipe Tapered OutletNo
Tip Diameter3.500 in.
Tip Quantity1
TitleFlowmaster 817509 Cat-back System 409S - Single Rear Exit - Force II - Mild/Moderate Sound
Tubing Diameter3.000 in.
TypeCat-Back
Valve IncludedNo
Valve TypeNot Applicable
WarningCalifornia Proposition 65
WARNING CA Proposition 65Yes
WARNING CA Proposition 65 MessageWARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$999.95
PART NUMBER: 817509
In Stock (10+)
Usually delivered within 2 days
Picture of Flowmaster 17278 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 17278 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 17278 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 17278 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 17278 Force II Cat-Back Exhaust System with Super Muffler - 50
Flowmaster 17278 Force II Cat-Back Exhaust System with Super Muffler - 50
Exhaust
Description
Specifications
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds)
California Proposition 65 Chemical NameNickel (Metallic)
California Proposition 65 Chemical Name 1Nickel (metallic)
California Proposition 65 Chemical Name 2Chromium (hexavalent compounds)
California Proposition 65 RequiredYes
Catalytic Converter Quantity0
CategoryExhaust
Clamping TypeU-Bolt
Clamps IncludedYes
Drive2WD
Drive4WD
Emission Code5
Exhaust SeriesForce II
Exhaust Tip ConnectionClamp-On
Exhaust Tip CutAngled
Exhaust Tip EdgeRolled Edge Angle Cut
Exhaust Tip FinishPolished
Exhaust Tip IntercooledNo
Exhaust Tip Material304 Stainless Steel
Exhaust Tip Quantity1
Exhaust Tip ResonatedNo
Exhaust Tip ShapeRound
Exhaust Tip WallSingle Wall
Exhaust TypeSingle
Exit PositionSingle Side
Exit StyleSingle Out Side
FinishAluminized
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat Shield AttachedNo
Heat Shield IncludedNo
Inlet Diameter2.50
Inlet TypeClamp-On
MaterialAluminized Steel
Mounting Bracket IncludedNo
Muffler (Left) Body Width10.00
Muffler (Left) TypeChambered
Muffler (Right) TypeChambered
Muffler Body MaterialAluminized Steel
Muffler Body ShapeOval
Muffler Count1
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler Inlet ConnectionSlip-Fit
Muffler Outlet ConnectionSlip-Fit
Muffler Outlet Quantity1
muffler part numberKit Only
Muffler Quantity1
Muffler SeriesSuper 50 Series
Muffler TypeChambered
Outlet Diameter3.000 in.
Outlet Outside Diameter2.500 in.
Pipe ColorSilver
Pipe MaterialAluminized Steel
Product TypeExhaust System
Single or DualSingle
Sound LevelModerate/Mild
Spring Bolt Kit IncludedNo
Sub CategoryExhaust and Tail Pipes
System TypeCat Back
Tail Pipe Diameter2.500 in.
Tail Pipe QuantitySingle
Tail Pipe Quantity1
Tail Pipe Tapered OutletNo
Tip Diameter3.500 in.
Tip Quantity1
TitleFlowmaster 17278 Cat-back System - Single Side Exit - Force II - Mild/Moderate Sound
Tubing Diameter3.000 in.
TypeCat-Back
Valve IncludedNo
Valve TypeNot Applicable
WarningCalifornia Proposition 65
WARNING CA Proposition 65Yes
WARNING CA Proposition 65 MessageWARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$571.95
PART NUMBER: 17278
4 left at this price
Usually delivered within 2 days
Picture of Flowmaster 817403 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 817403 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 817403 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 817403 Force II Cat-Back Exhaust System with Super Muffler - 50
Flowmaster 817403 Force II Cat-Back Exhaust System with Super Muffler - 50
Exhaust
Description
Specifications
BrandFlowmaster
California Proposition 65 Chemical NameNickel (Metallic)
California Proposition 65 Chemical NameChromium (hexavalent compounds)
California Proposition 65 Chemical Name 1Nickel (metallic)
California Proposition 65 Chemical Name 2Chromium (hexavalent compounds)
California Proposition 65 RequiredYes
Catalytic Converter Quantity0
CategoryExhaust
Clamping TypeFlat Band
Clamps IncludedYes
Drive4WD
Drive2WD
Emission Code5
Exhaust SeriesForce II
Exhaust Tip ColorSilver
Exhaust Tip ConnectionClamp-On
Exhaust Tip CutAngled
Exhaust Tip EdgeRolled Edge Angle Cut
Exhaust Tip FinishPolished
Exhaust Tip IntercooledNo
Exhaust Tip Material304 Stainless Steel
Exhaust Tip Quantity1
Exhaust Tip ResonatedNo
Exhaust Tip ShapeRound
Exhaust Tip WallSingle Wall
Exhaust TypeSingle
Exit PositionSingle Side
Exit StyleSingle Out Side
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat Shield AttachedNo
Heat Shield IncludedNo
Inlet Diameter3.00
Inlet Inside Diameter3.000 in.
Inlet TypeClamp-On
MaterialStainless Steel
Mounting Bracket IncludedNo
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler Count1
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler Inlet ConnectionSlip-Fit
Muffler Outlet ConnectionSlip-Fit
Muffler Outlet Quantity1
muffler part numberKit Only
Muffler Quantity1
Muffler SeriesSuper 50 Series
Muffler TypeChambered
Outlet Diameter3.000 in.
Outlet Outside Diameter3.000 in.
Pipe ColorSilver
Pipe Material409 Stainless Steel
Product TypeExhaust System
Single or DualSingle
Sound LevelMild
Spring Bolt Kit IncludedNo
Sub CategoryExhaust and Tail Pipes
System TypeCat Back
Tail Pipe Diameter3.000 in.
Tail Pipe QuantitySingle
Tail Pipe Quantity1
Tail Pipe Tapered OutletNo
Tip Diameter3.500 in.
Tip Quantity1
TitleFlowmaster 817403 Cat-back System 409S - Single Side Exit - Force II - Mild Sound
Tubing Diameter3.000 in.
TypeCat-Back
Valve IncludedNo
Valve TypeNot Applicable
WarningCalifornia Proposition 65
WARNING CA Proposition 65Yes
WARNING CA Proposition 65 MessageWARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$727.95
PART NUMBER: 817403
4 left at this price
Usually delivered within 2 days
Picture of Flowmaster 817704 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 817704 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 817704 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 817704 Force II Cat-Back Exhaust System with Super Muffler - 50 Picture of Flowmaster 817704 Force II Cat-Back Exhaust System with Super Muffler - 50
Flowmaster 817704 Force II Cat-Back Exhaust System with Super Muffler - 50
Exhaust
Description
Specifications
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds)
California Proposition 65 Chemical NameNickel (Metallic)
California Proposition 65 Chemical Name 1Nickel (metallic)
California Proposition 65 Chemical Name 2Chromium (hexavalent compounds)
California Proposition 65 RequiredYes
Catalytic Converter IncludedNo
Catalytic Converter Quantity0
CategoryExhaust
Clamping TypeFlat Band
Clamps IncludedYes
ColorBlack Muffler; Natural Tubing
Drive4WD
Drive2WD
Emission Code5
Exhaust Pipe Bend TypeAssorted
Exhaust SeriesForce II
Exhaust Tip ColorSilver
Exhaust Tip ConnectionClamp-On
Exhaust Tip CutAngled
Exhaust Tip EdgeAngle Cut
Exhaust Tip FinishPolished
Exhaust Tip IntercooledNo
Exhaust Tip Length9.00
Exhaust Tip Material304 Stainless Steel
Exhaust Tip Quantity1
Exhaust Tip ResonatedNo
Exhaust Tip ShapeOval
Exhaust Tip WallDouble Wall
Exhaust TypeSingle
Exit PositionSingle
Exit StyleSingle Out Side
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat Shield AttachedNo
Heat Shield IncludedNo
Inlet Diameter3.00
Inlet Inside Diameter3.000 in.
Inlet TypeFlanged
MaterialStainless Steel
Mount TypeFlanged
Mounting Bracket IncludedNo
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler ColorBlack
Muffler Count1
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler Inlet ConnectionSlip-Fit
Muffler Outlet ConnectionSlip-Fit
Muffler Outlet Quantity1
muffler part numberKit Only
Muffler Quantity1
Muffler SeriesSuper 50 Series
Muffler TypeReflection
Outlet Diameter3.000 in.
Outlet Outside Diameter3.000 in.
Pipe ColorSilver
Pipe Material409 Stainless Steel
Product TypeExhaust System
ShapeOval
Single or DualSingle
Sound LevelModerate/Mild
Spring Bolt Kit IncludedNo
Sub CategoryExhaust and Tail Pipes
System TypeCat Back
Tail Pipe Diameter3.000 in.
Tail Pipe Quantity1
Tail Pipe QuantitySingle
Tail Pipe Tapered OutletNo
Tip CutAngle
Tip Diameter5.500 in. W x 3.500 in. H
Tip Edge StyleCut
Tip FinishPolished
Tip Length9.000 in.
Tip LogoEmbossed
Tip MaterialStainless Steel
Tip Quantity1
Tip ShapeOval
Tip TypeDouble Wall
TitleFlowmaster 817704 Cat-back System - SOS - Force II - Mild/Moderate Sound
Tubing Diameter3.000 in.
TypeCat-Back
Valve IncludedNo
Valve TypeNot Applicable
WarningCalifornia Proposition 65
WARNING CA Proposition 65Yes
WARNING CA Proposition 65 MessageWARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$999.95
PART NUMBER: 817704
1 left at this price
Usually delivered within 2 days

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