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Flowmaster Outlaw Series™ Race Muffler 15440S

Flowmaster Outlaw Series™ Race Muffler 15440S
Flowmaster Outlaw Series™ Race Muffler 15440S
$220.99 ea
NEWARRIVING SOONEstimated Ship Date 10/18/2023 (If Ordered Today)51 available from HOLLEY PERFORMANCE PRODUCTS as of 09/26/2023
Model: 4004924
Supplier has not provided any fitment data for this product.
Outlaw mufflers are designed to be connected directly to the header collectors or can be added into an existing exhaust system. Recommended for racing applications where a muffler is required without a set decibel limit to be met. Please call the Flowmaster tech-line for assistance with specific dB requirements and applications.
  • Durable Fully Welded 16ga Aluminized Steel
  • Round Case Allows Install In Limited Space Apps
  • Designed for Maximum Horsepower and Torque
  • Minimal Decibel Reduction
  • Race Application Where Muffler Rules are in Effect
  • No Internal Packing To Blow Out
  • Premium Flowmaster Quality
Holley Performance Emission Code 5: 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
Installation Notes:
Universal Race Muffler - Not a direct fit. Some adaptation required. This muffler is directional. The internal rings lean back towards the outlet of the muffler.

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.


Download Name File Size



Automotive Item Grade High Performance
Body Height 5.000 in.
Body Height (in) 5
Body Length 7.000 in.
Body Length (in) 7
Body Width 5.000 in.
Body Width (in) 5
California Proposition 65 Required No
Color Black
Emission Code 5
Finish Paint
Fitment Universal
Inlet Connection Type Pipe Connection
Inlet Diameter 4.000 in.
Inlet Diameter (in) 4
Inlet Inside Diameter 4.000 in.
Inlet Outside Diameter 4.000 in.
Inlet Position Center
Inlet Type Single Center
Main Piping Diameter 4.000 in.
Material Aluminized Steel
Muffler Series Outlaw Delta Force
Muffler Type Reflection
Outlet Connection Type Pipe Connection
Outlet Diameter 4.000 in.
Outlet Diameter (in) 4
Outlet Outside Diameter 4.000 in.
Outlet Position Center
Outlet Type Single Center Outlet
Overall Length 16.750 in.
Overall Length (in) 13
Part Type Exhaust Muffler
Reversible No
Shape Round
Sound Level Aggressive
Tip Quantity 0
Type of Muffler Chambered
Vehicle Type Classic Muscle Car
Warranty Limited Lifetime (Lifetime)


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Flowmaster Outlaw Series™ Race Muffler 15440S:
Mustang Depot 2023