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Flowmaster Outlaw Extreme Cat-back Exhaust System

Part # 817708
1 Review

2009-2021 Toyota Tundra 4.6L, 4.7L and 5.7L engines. - Aggressive sound

Flowmaster Outlaw Extreme Cat-back Exhaust System

Estimated Ship Date: 06/15/2026
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Advertised Price $562.95
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Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

See Emissions Details
Introducing the Flowmaster® Outlaw Extreme™ cat-back exhaust system for 2009-2021 Toyota Tundra trucks with either the 4.6L, 4.7L or 5.7L engine is perfect for the person looking for maximum sound levels both inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster. This bolt-on emissions-legal system features all stainless steel construction, a specially designed dual inlet Outlaw® muffler flowing into short 3.00-inch turndown tailpipe for maximum performance and a deep aggressive sound. If you want to get noticed, this is the system for you. Includes all necessary parts and hardware for a fast and easy at home installation. Notes: Fits 2/4 wheel drives with 145-inch Wheelbase models only. Does Not fit Standard cab/short bed or Double cab/long bed models and only fits 2009 models built after 08/2008.

Features:

  • Specially Designed Outlaw Series Performance Muffler
  • Deep Aggressive Interior and Exterior Tone
  • Mandrel-bent Stainless Steel Construction
  • Race Proven Outlaw Muffler Technology
  • Extreme Sound for Extreme Lifestyles
  • Uses the Factory Hanger Locations
  • Lifetime Limited Warranty
  • Quick & Easy Installation

About Flowmaster

Shop the complete line of Flowmaster products for exhaust systems, mufflers, and more that deliver the iconic Flowmaster sound. Available at Holley.com!

Brand Flowmaster
California Proposition 65Yes
CARB (California) CompliantYes
Catalytic Converter IncludedNo
Catalytic Converter Quantity0
CategoryExhaust
Clamping TypeFlat Band
Clamps IncludedYes
Drive2WD
4WD
Emission Code5
Exhaust SeriesOutlaw Extreme
Exhaust Tip CutSquare
Exhaust Tip Diameter3.00 IN
Exhaust Tip EdgeCut
Exhaust Tip IntercooledNo
Exhaust Tip Length11.00 IN
Exhaust Tip Material409 Stainless Steel
Exhaust Tip Quantity1
Exhaust Tip ShapeRound
Exit StyleSingle Out Dump
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat Shield IncludedNo
Inlet Diameter2.25 IN
Inlet TypeClamp-On
Main Piping Diameter3.00 IN
Mount TypeUses Factory Hangers
Mounting Bracket IncludedNo
Muffler Body Height4.00 IN
Muffler Body Length11.00 IN
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler Body Width9.50 IN
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler IncludedYes
Muffler Inlet ConnectionSlip-Fit
Muffler Inlet Inside Diameter2.25 IN
Muffler Inlet Outside Diameter2.38 IN
Muffler Outlet ConnectionSlip-Fit
Muffler Outlet Quantity1
Muffler Part NumberKit Only
Muffler Quantity1
Muffler SeriesOutlaw
Muffler TypeChambered
Part TypeExhaust System
Pipe ColorBlack
Pipe Material409 Stainless Steel
Product TypeExhaust System
Sound LevelAggressive
Spring Bolt Kit IncludedNo
Sub CategoryExhaust and Tail Pipes
Tail Pipe Outlet Outside Diameter3.00 IN
Tail Pipe Quantity1
Single
Tail Pipe Tapered OutletNo
Tip LogoNone
TypeCat-Back
Valve IncludedNo
Valve TypeNot Applicable
UPC700042032419
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
Part Number817708
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This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Fits 2009-2021 Toyota Tundra with 4.6L, 4.7L and 5.7L engines. 145-inch Wheelbase models only. Only fits 2009 models built AFTER 08/2008
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Some parts are not legal for use in California or other states with similar regulations.