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Flowmaster Outlaw Extreme Cat-Back Exhaust System 817916

Flowmaster Outlaw Extreme Cat-Back Exhaust System 817916
Flowmaster Outlaw Extreme Cat-Back Exhaust System 817916Flowmaster Outlaw Extreme Cat-Back Exhaust System 817916Flowmaster Outlaw Extreme Cat-Back Exhaust System 817916Flowmaster Outlaw Extreme Cat-Back Exhaust System 817916Flowmaster Outlaw Extreme Cat-Back Exhaust System 817916
$663.99 ea
NEWARRIVING SOONEstimated Ship Date 10/08/2025 (If Ordered Today)41 Available from HOLLEY PERFORMANCE PRODUCTS as of 09/21/2025
Model: 4005500
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 3
STORE PICKUP
[More Info]
Introducing our new Outlaw Extreme Cat-back system for the 2014-2019 GM Silverado/Sierra 1500 with the 4.3L and 5.3L engine. These kits deliver the ultimate sound in aggressive exhaust systems by using a 3.00-inch race-proven Outlaw muffler and a single 3.00-inch single dump style turndown exit under the bed, for the ultimate deep and aggressive sound that will get you noticed. The system is manufactured using 409 stainless steel for durability and uses the factory hangers. As an Outlaw extreme system, this will deliver a very aggressive sound both outside and inside the truck that will get you noticed. Comes with all hardware and detailed instructions for an easy installation that can be done in less than an hour. Notes: Fits 2014-2019* (*Classic body) 2/4 WD, 143.5-inch & 153-inch Wheelbases.
Features:
  • Race Proven Outlaw Muffler Technology
  • Extreme Sound for Extreme Lifestyles
  • Mandrel-bent Stainless Steel Tubing
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Uses the Factory Hangers
  • Easy Installation
"Does Not fit 2019 New body trucks.
Installation Notes:
"Does Not fit 2019 New body trucks.
About Flowmaster

Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Downloads:

Download Name File Size
fm_warranty_general.pdf88.58KB
817916_instructions.pdf1.44MB

Videos:

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine
Chevrolet Silverado 1500 LD Custom 2019 5.3L / 325 / V8
Chevrolet Silverado 1500 LD LT 2019 5.3L / 325 / V8
Chevrolet Silverado 1500 LD WT 2019 5.3L / 325 / V8
Chevrolet Silverado 1500 Base 2016 4.3L / 262 / V6
Chevrolet Silverado 1500 Custom 2016 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 Custom 2017 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 Custom 2018 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 High Country 2015 5.3L / 325 / V8
Chevrolet Silverado 1500 High Country 2016 5.3L / 325 / V8
Chevrolet Silverado 1500 High Country 2017 5.3L / 325 / V8
Chevrolet Silverado 1500 High Country 2018 5.3L / 325 / V8
Chevrolet Silverado 1500 LS 2015 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LS 2016 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LS 2017 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LS 2018 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LTZ 2014 5.3L / 325 / V8
Chevrolet Silverado 1500 LTZ 2015 5.3L / 325 / V8
Chevrolet Silverado 1500 LTZ 2016 5.3L / 325 / V8
Chevrolet Silverado 1500 LTZ 2017 5.3L / 325 / V8
Chevrolet Silverado 1500 LTZ 2018 5.3L / 325 / V8
Chevrolet Silverado 1500 LT 2014 5.3L / 325 / V8
Chevrolet Silverado 1500 LT 2015 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LT 2016 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LT 2017 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LT 2018 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 SSV 2015 5.3L / 325 / V8
Chevrolet Silverado 1500 SSV 2016 5.3L / 325 / V8
Chevrolet Silverado 1500 SSV 2017 5.3L / 325 / V8
Chevrolet Silverado 1500 SSV 2018 5.3L / 325 / V8
Chevrolet Silverado 1500 WT 2014 5.3L / 325 / V8
Chevrolet Silverado 1500 WT 2015 4.3L / 262 / V6
5.3L / 325 / V8
Chevrolet Silverado 1500 WT 2016 4.3L / 262 / V6
5.3L / 325 / V8
Chevrolet Silverado 1500 WT 2017 4.3L / 262 / V6
5.3L / 325 / V8
Chevrolet Silverado 1500 WT 2018 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Limited Base 2019 5.3L / 325 / V8
GMC Sierra 1500 Limited SLE 2019 5.3L / 325 / V8
GMC Sierra 1500 Base 2014 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Base 2015 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Base 2016 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Base 2017 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Base 2018 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Denali 2014 5.3L / 325 / V8
GMC Sierra 1500 Denali 2015 5.3L / 325 / V8
GMC Sierra 1500 Denali 2016 5.3L / 325 / V8
GMC Sierra 1500 Denali 2017 5.3L / 325 / V8
GMC Sierra 1500 Denali 2018 5.3L / 325 / V8
GMC Sierra 1500 SLE 2014 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLE 2015 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLE 2016 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLE 2017 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLE 2018 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLT 2014 5.3L / 325 / V8
GMC Sierra 1500 SLT 2015 5.3L / 325 / V8
GMC Sierra 1500 SLT 2016 5.3L / 325 / V8
GMC Sierra 1500 SLT 2017 5.3L / 325 / V8
GMC Sierra 1500 SLT 2018 5.3L / 325 / V8

Specifications:

California Proposition 65 Chemical Name Chromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 Required Yes
Emission Code 5
Exhaust Series Outlaw Extreme
Exit Position Single Out - Dump
Material 409 Stainless Steel
Mount Type Uses Factory Hangers
Part Type Exhaust System Kit
Product Type Exhaust System
Proposition 65 www.P65Warnings.ca.gov
Single Dual Single
Sound Level Aggressive
System Type Cat-back
Tubing Diameter (in) 3
Tubing Material 409S Stainless Steel

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