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Exhaust System for 2004 Ford Mustang

We have 23 Items In-stock. Select your vehicle's Submodel to continue.

Gibson - Split Rear Cat-Back Exhaust Systems

GIBSON – SPLIT REAR CAT-BACK EXHAUST SYSTEMS

Gibson’s Split Rear cat-back exhaust system is dyno-proven to dramatically increase the power band in the low to mid range, giving you more horsepower, torque and fuel economy and a design that leaves you room for a hitch, spare or roll pan. Gibson is known as the leading manufacturer of street-legal, high performance exhaust systems for trucks, SUVs, diesels, off-road vehicles and RVs.

  • Stainless exhausts backed by a lifetime warranty
  • Deep, rich sound (a bit louder when towing)
  • Patented Superflow technology means dramatically more efficient exhaust flow
  • Designed to work with most bumpers without interfering with a hitch, roll pan or spare tire
  • Comes in aluminized or stainless steel
  • Baffled and chambered design means optimal volumetric efficiency
  • Proven to improve torque, horsepower and gas mileage
  • Mandrel-bent tubing allows for continuous airflow
  • Polished stainless tips feature sleek clampless connection
  • Dyno-tested
  • Direct fit by vehicle year, make and model
  • Made in America
  • Legal in all 50 states
Gibson Exhaust System, Gibson Split Rear, Aluminized Steel, Natural
$357.97 List Price $625.20 Save $267.23 Availability: In Stock
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  • SKU#: G27319003
  • Quantity Sold: Assembly
  • Muffler Sound Level: Aggressive
  • Recommended Use: Performance
  • Advertised Power Gains: 15-20 h.p.
  • Anticipated Ship Out Time: 2-3 business days
  • Attachment Style: Bolt-on
  • Exit Location: Straight out the back
  • Exit Quantity: Dual
  • Includes: Pipes, zinc-plated factory style hangers, heavy-duty clamps
  • Main Piping Diameter: 2.5 in.
  • Muffler Configuration: Single inlet and outlet
  • Muffler Finish: Natural
  • Muffler Material: Aluminized steel
  • Muffler Quantity: Two
  • Muffler Type: Baffled and Chambered
  • System Type: Cat-back
  • Tip Cut: Angle
  • Tip Diameter: 4 in.
  • Tip Edge Style: Non-rolled
  • Tip Finish: Polished
  • Tip Length: 4 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: Two
  • Tip Shape: Round
  • Warranty: Lifetime Gibson limited warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 8 Cyl 4.6L | GT, Mach I
Gibson Exhaust System, Gibson Split Rear, Stainless Steel, Natural
$427.33 List Price $754.67 Save $327.34 Availability: In Stock
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  • SKU#: G27619003
  • Quantity Sold: Assembly
  • Muffler Sound Level: Aggressive
  • Recommended Use: Performance
  • Advertised Power Gains: 8-10 h.p.
  • Anticipated Ship Out Time: 2-3 business days
  • Attachment Style: Bolt-on
  • Exit Location: Behind Rear Tire
  • Exit Quantity: Dual
  • Includes: Pipes, zinc-plated factory style hangers, heavy-duty clamps
  • Main Piping Diameter: 3 in.
  • Muffler Configuration: Single inlet and outlet
  • Muffler Finish: Natural
  • Muffler Material: Stainless Steel
  • Muffler Quantity: Two
  • Muffler Type: Baffled and Chambered
  • System Type: Cat-back
  • Tip Cut: Angle
  • Tip Diameter: 3.5 in.
  • Tip Edge Style: Non-rolled
  • Tip Finish: Polished
  • Tip Length: 4 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: Two
  • Tip Shape: Round
  • Warranty: Lifetime Gibson limited warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 8 Cyl 4.6L | GT, Mach I

Magnaflow Performance Exhaust Systems

MAGNAFLOW PERFORMANCE EXHAUST SYSTEMS

Over the past 30 years, Magnaflow has grown as a market leader of exhaust systems, focusing on three key elements with each product they produce—quality, power and sound. Magnaflow’s Performance exhaust systems feature stainless steel construction and mandrel bent pipes, allowing for greater fuel economy and improved performance. A full-bodied exhaust note, emblematic of the brand, is achieved through the smooth, lap-joint welded body, tightly packed with acoustical fibers designed to dampen irritating pitch tones.

Magnaflow Exhaust System, Magnaflow Performance, Stainless Steel, Natural
$642.56 List Price $831.55 Save $188.99 Availability: In Stock
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  • SKU#: M6615717
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate
  • Recommended Use: Performance
  • Advertised Power Gains: 10% increase in horsepower
  • Anticipated Ship Out Time: 1-2 business days
  • Attachment Style: Bolt/Clamp On
  • Exit Location: Split rear
  • Exit Quantity: Dual
  • Main Piping Diameter: 4 in.
  • Muffler Configuration: Single inlet and outlet
  • Muffler Finish: Polished
  • Muffler Material: Stainless Steel
  • Muffler Quantity: Two
  • Muffler Type: Straight Thru
  • Notes: Includes: Mounting hardware, 4 x 14 in. mufflers
  • System Type: Cat-back
  • Tip Cut: Angle
  • Tip Diameter: 3 in.
  • Tip Edge Style: Non-rolled
  • Tip Finish: Polished
  • Tip Length: 16 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: 2
  • Tip Shape: Round
  • Warranty: Lifetime Magnaflow limited warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 6 Cyl 3.8L | Base
  • 6 Cyl 3.9L | Base
Magnaflow Exhaust System, Magnaflow Performance, Stainless Steel, Natural
$698.29 List Price $903.67 Save $205.38 Availability: In Stock
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  • SKU#: M6615644
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate
  • Recommended Use: Performance
  • Advertised Power Gains: Up to 22 h.p. and 25 lbs.-ft. of torque
  • Anticipated Ship Out Time: 1-2 business days
  • Attachment Style: Bolt/Clamp On
  • Exit Location: Split rear
  • Exit Quantity: Dual
  • Main Piping Diameter: 4 in.
  • Muffler Configuration: Single inlet and outlet
  • Muffler Finish: Polished
  • Muffler Material: Stainless Steel
  • Muffler Quantity: Two
  • Muffler Type: Straight Thru
  • Notes: Includes: Mounting hardware, 4 x 9 x 14 in. muffler
  • System Type: Cat-back
  • Tip Cut: Straight
  • Tip Diameter: 3.5 in.
  • Tip Edge Style: Non-rolled
  • Tip Finish: Polished
  • Tip Length: 16 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: 2
  • Tip Shape: Round
  • Warranty: Lifetime Magnaflow limited warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 8 Cyl 4.6L | SVT Cobra
Magnaflow Exhaust System, Magnaflow Performance, Stainless Steel, Natural
$642.41 List Price $831.36 Save $188.95 Availability: In Stock
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  • SKU#: M6615673
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate
  • Recommended Use: Performance
  • Advertised Power Gains: 10% increase in horsepower
  • Anticipated Ship Out Time: 1-2 business days
  • Attachment Style: Bolt/Clamp On
  • Exit Location: Split rear
  • Exit Quantity: Dual
  • Main Piping Diameter: 4 in.
  • Muffler Configuration: Single inlet and outlet
  • Muffler Finish: Polished
  • Muffler Material: Stainless Steel
  • Muffler Quantity: Two
  • Muffler Type: Straight Thru
  • Notes: Includes: Mounting hardware, 4 in. round mufflers
  • System Type: Cat-back
  • Tip Cut: Straight
  • Tip Diameter: 3.5 in.
  • Tip Edge Style: Non-rolled
  • Tip Finish: Polished
  • Tip Length: 16 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: 2
  • Tip Shape: Round
  • Warranty: Lifetime Magnaflow limited warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 8 Cyl 4.6L | GT, Mach I

MAGNAFLOW COMPETITION SERIES PERFORMANCE EXHAUST SYSTEM

MAGNAFLOW COMPETITION SERIES PERFORMANCE EXHAUST SYSTEM

  • Lap-joint welded stainless steel construction
  • Mandrel bent pipes
  • Application specific for domestic vehicles
  • Check local laws – aggressive sound
  • Made in the USA

Get maximum performance and reduced mass with Magnaflow’s Competition Series Exhaust Systems. The 100% stainless steel design features mandrel bent pipes for unrestricted airflow, and an aggressive exhaust note that’s perfectly in pitch. Easy to install and backed by a lifetime warranty, the Magnaflow Competition Series Exhaust System is dyno tested and proven to outperform factory exhaust systems.

Magnaflow Exhaust System, Magnaflow Competition, Stainless Steel, Natural
$746.90 List Price $966.58 Save $219.68 Availability: In Stock
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  • SKU#: M6616394
  • Quantity Sold: Assembly
  • Muffler Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 business days
  • Attachment Style: Bolt/Clamp On
  • Exit Location: Split rear
  • Exit Quantity: Dual
  • Main Piping Diameter: 3 in.
  • Muffler Finish: Polished
  • Muffler Material: Stainless Steel
  • Muffler Quantity: One
  • Muffler Type: Straight Thru
  • Notes: Includes: Pipes, muffler, clamps
  • System Type: Cat-back
  • Tip Diameter: 3 in.
  • Tip Finish: Polished
  • Tip Length: 13.5 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: 2
  • Tip Shape: Round
  • Warranty: Lifetime Magnaflow limited warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 8 Cyl 4.6L | GT, Mach I

MAGNAFLOW OFF ROAD PRO-SERIES (ORPS) SERIES PERFORMANCE EXHAUST SYSTEMS

MAGNAFLOW OFF ROAD PRO-SERIES (ORPS) SERIES PERFORMANCE EXHAUST SYSTEMS

Magnaflow’s Off Road Pro-Series Exhaust Systems are constructed with a turn down tip before the axle, allowing for versatile accommodations for vehicles with modified suspensions. The stainless steel build offers maximum power with minimal weight, and a hassle free, bolt-on installation.

  • Straight through design
  • Turn down tip without tailpipe
  • Lifetime warranty
  • Aggressive exhaust note
Magnaflow Exhaust System, Magnaflow Off-Road Pro Series (ORPS), Stainless Steel, Natural
$488.54 List Price $632.23 Save $143.69 Availability: In Stock
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  • SKU#: M6617118
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 business days
  • Attachment Style: Bolt/Clamp On
  • Downpipe Diameter: 2.5 in.
  • Exit Location: Split side
  • Exit Quantity: Dual
  • Main Piping Diameter: 2.5 in.
  • Muffler Configuration: Single inlet and outlet
  • Muffler Finish: Polished
  • Muffler Material: Stainless Steel
  • Muffler Quantity: Two
  • Muffler Type: Straight Thru
  • Notes: Includes: Mounting hardware, 4 x 14 in. muffler
  • System Type: Cat-back
  • Tip Cut: Turndown
  • Tip Diameter: 2.75 in.
  • Tip Edge Style: Non-rolled
  • Tip Finish: Polished
  • Tip Length: 9 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: 2
  • Tip Shape: Round
  • Warranty: Lifetime Magnaflow limited warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 8 Cyl 4.6L | GT, SVT Cobra, Mach I

Flowmaster - American Thunder Exhaust Systems

FLOWMASTER  – AMERICAN THUNDER EXHAUST SYSTEMS

Flowmaster’s American Thunder chambered exhaust system is dyno-proven to dramatically increase the power band, giving you more horsepower, torque, fuel economy and a new image with an aggressive, rich exhaust tone. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Flowmaster’s most popular exhaust system
  • Features an aggressive sound
  • 3-year limited warranty for aluminized steel/lifetime warranty for stainless steel
  • Come in aluminized or stainless steel
  • Proven to improve torque, horsepower and gas mileage
  • Mandrel-bent tubing allows for continuous airflow
  • Quick and easy installation
  • Best for muscle cars and trucks
  • Passenger side, split  or driver side exit design
  • Dyno-tested
  • Direct fit by vehicle year, make and model
Flowmaster Exhaust System, Flowmaster American Thunder, Aluminized Steel, Natural
$419.16 List Price $595.28 Save $176.12 Availability: In Stock
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  • SKU#: F1317312
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate
  • Recommended Use: Performance
  • Advertised Power Gains: Typically 5-7% increase over stock
  • Anticipated Ship Out Time: 1-2 business days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Exit Location: Dual Rear Exit
  • Exit Quantity: Dual
  • Includes: Mounting hardware
  • Main Piping Diameter: 2.5 in.
  • Muffler Configuration: 2.5 In. Inlet, 2.5 In. Outlet
  • Muffler Finish: Black
  • Muffler Material: Aluminized steel
  • Muffler Quantity: Two
  • Muffler Type: Chambered
  • Notes: Includes Super 40 Series Muffler
  • System Type: Cat-back
  • Tip Cut: Angle
  • Tip Diameter: 3 in.
  • Tip Edge Style: Non-rolled
  • Tip Finish: Polished
  • Tip Length: 13 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: Two
  • Tip Shape: Round
  • Warranty: Flowmaster 3-Year Limited Warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 8 Cyl 4.6L | GT, Mach I
Flowmaster Exhaust System, Flowmaster American Thunder, Aluminized Steel, Natural
$425.39 List Price $631.52 Save $206.13 Availability: In Stock
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  • SKU#: F1317248
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate
  • Recommended Use: Performance
  • Advertised Power Gains: Typically 5-7% increase over stock
  • Anticipated Ship Out Time: 1-2 business days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Exit Location: Dual Rear Exit
  • Exit Quantity: Dual
  • Includes: Mounting hardware
  • Main Piping Diameter: 2.5 in.
  • Muffler Configuration: 2.5 In. Inlet, 2.5 In. Outlet
  • Muffler Finish: Natural
  • Muffler Material: Aluminized steel
  • Muffler Quantity: Two
  • Muffler Type: Chambered
  • Notes: Includes Super 40 Series Muffler
  • System Type: Cat-back
  • Tip Cut: Angle
  • Tip Diameter: 3 in.
  • Tip Edge Style: Non-rolled
  • Tip Finish: Polished
  • Tip Length: 13 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: Two
  • Tip Shape: Round
  • Warranty: Flowmaster 3-Year Limited Warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 8 Cyl 4.6L | SVT Cobra
Flowmaster Exhaust System, Flowmaster American Thunder, Stainless Steel, Natural
$532.32 List Price $688.88 Save $156.56 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
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  • SKU#: F13817248
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate
  • Recommended Use: Performance
  • Advertised Power Gains: Typically 5-7% increase over stock
  • Anticipated Ship Out Time: 1-2 business days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Downpipe Diameter: 2.5 in.
  • Exit Location: Dual Rear Exit
  • Exit Quantity: Dual
  • Includes: Mounting hardware
  • Main Piping Diameter: 2.5 in.
  • Muffler Configuration: 2.5 In. Inlet, 2.5 In. Outlet
  • Muffler Finish: Black
  • Muffler Material: Stainless Steel
  • Muffler Quantity: Two
  • Muffler Type: Chambered
  • Notes: Includes Super 40 Series Muffler
  • System Type: Cat-back
  • Tip Cut: Angle
  • Tip Diameter: 3 in.
  • Tip Edge Style: Non-rolled
  • Tip Finish: Polished
  • Tip Length: 13 in.
  • Tip Material: Stainless Steel
  • Tip Quantity: Two
  • Tip Shape: Round
  • Warranty: Lifetime Flowmaster limited warranty
see more Fits the following 2004 Ford Mustang submodels:
  • 8 Cyl 4.6L | SVT Cobra

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