2004 Subaru WRX Exhausts

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    • (0 reviews)
      $857.05from $685.64 - $685.69
      Subaru WRX / WRX STI 2004, Street Series Cat-Back Exhaust System by MagnaFlow®, MODERATE SOUND. The Street Series is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned...
      # 35201460
    • (0 reviews)
      $745.10$596.08
      Subaru WRX / WRX STI 2004, dBX™ Stainless Steel Cat-Back Exhaust System by Flowmaster®, MODERATE SOUND. dBX Series Muffler. Single Rear Exit. 3" Tubing. 4" Polished Stainless Steel Tip. The dBX Series produces an exhaust note...
      # 24459547
    • (0 reviews)
      $753.74$602.99
      Subaru WRX Wagon 2004, Stainless Steel Cat-Back Exhaust System by Borla®, AGGRESSIVE SOUND, Single Left Rear Exit. 4" Inlet / 8" Outlet Single Round Half-Rolled Angle-Cut Phantom Tip. 2.5" Tubing. When you want the best performing,...
      # 43943417
    • (0 reviews)
      $866.15$692.92
      Subaru WRX 2004, Touring™ Stainless Steel Cat-Back Exhaust System by Borla®, MILD GROWL SOUND, Dual Left Rear Exit. 3.19" Inlet / 6" Outlet Dual Round Rolled Angle-Cut Long Tip. 3" Tubing. When you want the best performing, best...
      # 1221327
    • (0 reviews)
      $882.49$705.99
      Subaru WRX 2004, S-Type™ Stainless Steel Cat-Back Exhaust System by Borla®, AGGRESSIVE PLUS SOUND, Single Left Rear Exit. 4.5" Inlet Single Round Rolled Angle-Cut Phantom Tip. 3" Tubing. When you want the best performing, best...
      # 26117591
    • (0 reviews)
      $1,180.31$944.25
      Subaru WRX 2004, N-II Stainless Steel Cat-Back Exhaust System by ARK Performance®. 4.5" Single Tip. 3" Pipe. The ARK N-II cat-back exhaust system offers straight-through technology, offset tip design, and large piping diameter. All...
      All Bolt-on SystemStraight-through Muffler Core
      # 16118542
    • (0 reviews)
      $750.00$600.00
      Subaru WRX / WRX STI 2004, Cat-Back Exhaust System by Agency Power®. The Cat-Back is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned exhaust note, making a real...
      Suitable for Everyday DrivingIncreases Power
      # 15847517
    • (0 reviews)
      $646.58$517.26
      Subaru WRX / WRX STI 2004, Polished Stainless Steel Cat-Back Exhaust System by DC Sports®. Single Canister. DC Sports race-inspired Single Canister systems are available for V6 and select four-cylinder application. Our Single...
      # 45401509
    • (0 reviews)
      $136.69$109.35
      Subaru WRX 2004, N1 Style Cat-Back Exhaust System with Burnt Tip (3" Inlet) by Spec-D®. Make whatever you drive run and sound like a high-performance machine with a Spec-D Exhaust System. The Spec-D system replaces your restrictive...
      Dramatically improved exhaust flow compared to restrictive stock systemImproved engine breathing enables increased power output for better performance
      # 38833103
    • (0 reviews)
      $136.69$109.35
      Subaru WRX 2004, N1 Style Cat-Back Exhaust System (3" Inlet) by Spec-D®. Make whatever you drive run and sound like a high-performance machine with a Spec-D Exhaust System. The Spec-D system replaces your restrictive factory pipes...
      Dramatically improved exhaust flow compared to restrictive stock systemImproved engine breathing enables increased power output for better performance
      # 38833104
    • (0 reviews)
      $750.00$600.00
      Subaru WRX 2004, Stainless Steel Header by Agency Power®. Adding a high quality exhaust header is a great way to gain power for your car. The Agency Power stainless steel exhaust header is constructed with quality in mind and the...
      Increases horsepower and torqueManufactured from 304 stainless steel
      # 15847894
    • (0 reviews)
      $547.48$437.98
      Subaru WRX / WRX STI 2004, Polished Stainless Steel Turbo Manifold by DC Sports®. DC Sports Turbo Manifolds are the perfect upgrade for customers looking to extract the most power from their factory turbocharged vehicle. Because of...
      # 11019108
    • (0 reviews)
      $400.39from $320.31 - $485.43
      Subaru WRX 2004, Direct Fit Federal Pre-OBDII Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 7.63" Wide. Without Air Tube. If your car needs replacement, install one that will get you through the smog check...
      # 42443872
    • (0 reviews)
      $498.45from $398.76 - $583.50
      Subaru WRX 2004, Direct Fit Federal OEM Grade Catalytic Converter by MagnaFlow®. 2.5" 7.63" Wide. Without Air Tube. If your car needs replacement, install one that will get you through the smog check and give you more horsepower....
      # 42443876
    • (0 reviews)
      $196.73$157.38
      Subaru WRX / WRX STI 2004, dBX Series™ Stainless Steel Laminar Flow Muffler by Flowmaster®, MODERATE SOUND, 2.5" Center Inlet / 2.5" Center Outlet, 6" Diameter x 14" Case Length. dBX Laminar Flow mufflers have a patented core...
      # 848580
    • (0 reviews)
      $101.65$81.32
      Subaru WRX / WRX STI 2004, 40 Series Delta Force™ Aluminized Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Center Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the...
      # 34439620
    • (0 reviews)
      $108.85$87.08
      Subaru WRX / WRX STI 2004, 40 Series Original Stainless Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Center Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the muffler...
      # 34439621
    • (0 reviews)
      $118.05from $94.44 - $108.08
      Subaru WRX / WRX STI 2004, 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Center Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The 2-chamber design of this...
      # 34441975
    • (0 reviews)
      $104.88from $83.90 - $94.44
      Subaru WRX / WRX STI 2004, Super 44 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Center Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The Super 44 has the...
      # 34441978
    • (0 reviews)
      $197.49$157.99
      Subaru WRX 2004, MegaPower™ Muffler by Skunk2®. 5.25" Canister. 2.25" Inlet Diameter. Skunk2 muffler is designed to maximize exhaust flow and power. Each muffler by Skunk2 is constructed from T-304 stainless steel and TIG welded...
      Increases performance by maximizing power and flowConstructed from T-304 stainless steel
      # 38815910
    • (0 reviews)
      $377.73from $302.18 - $439.88
      Subaru WRX Sti 2004, Downpipe by Injen®. Eliminate restriction and maximize exhaust flow with this quality stainless steel downpipe.
      # 379193
    • (0 reviews)
      $212.50from $170.00 - $300.00
      Subaru WRX 2004, Downpipes by Agency Power®. When adding an Agency Power Racing Downpipe to your turbo car, you will gain more horsepower and overall performance. The downpipe allows for better flow of the turbine and wastegate...
      Gives your vehicle a serious performance boostPrecision engineered for your vehicle
      # 15848165
    • (0 reviews)
      $347.03$277.62
      Subaru WRX / WRX STI 2004, Polished Stainless Steel Turbocharger Downpipe by DC Sports®. DC Sports competition pipes delete the catalytic to eliminate restriction in the exhaust path and are dyno tuned to deliver incredible...
      # 45401510
    • (0 reviews)
      $143.01$114.41
      Subaru WRX / WRX STI 2004, Polished Stainless Steel Turbo Up-Pipe by DC Sports®. Flex Joint. DC Sports competition pipes delete the catalytic to eliminate restriction in the exhaust path and are dyno tuned to deliver incredible...
      # 45401513
    • (0 reviews)
      $390.89$312.71
      Universal Delta Force™ Aluminized Steel Low Profile Oval Tubing Race Muffler by Flowmaster®, Aggressive Sound, 3.50" Dual Inlet / 3.50" Dual Outlet, 2.75 Thick x 11" Wide x 25" Length. The low profile mufflers are Delta Flow™...
      # 898448
    • (0 reviews)
      $209.88from $167.90 - $267.60
      Universal 30 Series Delta Force™ 3-Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. These are the most powerful and the quietest professional race mufflers available. 5.00” & 6.00” thick case sizes for maximum power and...
      # 898450
    • (1 reviews)
      $118.05from $94.44 - $141.66
      Universal Outlaw™ Race Muffler by Flowmaster®, AGGRESSIVE SOUND. These mufflers are very small and lightweight. Attached directly to the collector they generally produce more power than open headers, while taking “the edge”...
      # 898456
    • (1 reviews)
      $236.09$188.87
      Universal Pro Series™ Stainless Steel Race Muffler with Turn Down by Flowmaster®, MODERATE SOUND, 6" Diameter x 16" Case Length. Laminar Flow Mufflers have applications in all forms of racing. The Cool Shell Technology makes...
      # 898465
    • (0 reviews)
      $274.15$219.32
      Universal Scavenger Series Race Collector Muffler by Flowmaster®. These Delta Force Mufflers are designed to attach directly to the exhaust header primary tubes, replacing the collector in sprint and drag racing applications. They...
      # 898468
    • (0 reviews)
      $132.48from $105.98 - $230.86
      Universal 40 Series Delta Force™ 2-Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. The 40-Series mufflers offer a combination of maximum power and substantial dB-reduction compared to open headers. They are recommended for...
      # 898479
    • (0 reviews)
      $94.53from $75.62 - $146.90
      Universal 10 Series Delta Force Single Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. The 10 Series Race mufflers are a compact lightweight single chamber design that will give a noticeable sound reduction compared to open...
      # 898490
    • (0 reviews)
      $246.58$197.26
      Universal 60 Series Delta Force Stainless Steel Race Muffler by Flowmaster®, MODERATE SOUND, 4" Offset Inlet / 4" Offset Outlet, 22" Length. These are the most powerful and the quietest professional race mufflers available.
      # 3146020
    • (0 reviews)
      $234.83from $187.86 - $208.84
      Universal Scavenger Series Outlaw II Race Collector Muffler by Flowmaster®. These Delta Force Mufflers are designed to attach directly to the exhaust header primary tubes, replacing the collector in sprint and drag racing...
      # 23297627
    • (0 reviews)
      $163.98$131.18
      Universal 60 Series Delta Flow™ Aluminized Steel Muffler by Flowmaster®, MILD SOUND, 2.25" Center Inlet / 2.25" Center Outlet, 5" Thick x 10" Wide x 13" Case Length x 19" Overall Length. The 60 Series increases horsepower and...
      # 897052
    • (1 reviews)
      $112.49from $89.99 - $108.08
      Universal 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The 2-chamber design of this muffler, incorporating the patented Flowmaster Delta Flow...
      # 897054
    • (0 reviews)
      $108.85$87.08
      Universal 40 Series Original Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the muffler that launched the success of Flowmaster. It is an aggressive sounding...
      # 897079
    • (0 reviews)
      $222.98$178.38
      Universal 50 Series Delta Flow™ Aluminized Steel Big Block Muffler by Flowmaster®, MILD SOUND, 5" Thick x 12" Wide x 22" Case Length x 28" Overall Length. The 50 Series Big Block Muffler is Flowmaster’s largest and quietest...
      # 897082
    • (0 reviews)
      $133.78from $107.02 - $125.92
      Universal 50 Series Delta Flow™ Muffler by Flowmaster®, MODERATE SOUND, 4" Thick x 9.75" Wide x 17" Case Length x 23" Overall Length. The 50 Series Delta Flow mufflers are designed for passenger cars. The sound characteristics...
      # 897086
    • (0 reviews)
      $193.74from $154.99 - $191.86
      Universal 50 Series HD Delta Flow™ Muffler by Flowmaster®, MODERATE SOUND, 4" Thick x 9.75" Wide x 18" Case Length x 23" Overall Length. The 50 Series HD Delta Flow mufflers are big mufflers for big trucks. With 4” internal...
      # 897102
    • (0 reviews)
      $190.19$152.15
      Universal 70 Series Delta Flow™ Big Block Muffler by Flowmaster®, MILD SOUND, 5" Thick x 10" Wide x 22" Case Length x 28" Overall Length. The 70 Series Big Block II Muffler uses a longer case for increased volume and added...
      # 897109
    • (1 reviews)
      $131.24from $104.99 - $132.99
      Universal HP-2™ Laminar Flow™ Perfomance Muffler by Flowmaster®, MODERATE SOUND. HP-2 Performance Mufflers is the Hot-Rodder’s Dream Muffler. It is a true high performance muffler and yet it is small enough for street rod...
      # 897113
    • (3 reviews)
      $87.49from $69.99 - $73.44
      Universal Super 10 Series Delta Flow™ Stainless Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 5.50" Case Length x 12.50" Overall Length. If you want to be arrested, you should mount this muffler on your...
      # 897126
    • (0 reviews)
      $131.15from $104.92 - $109.49
      Universal Super 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 5" Thick x 10" Wide x 13.50" Case Length x 19.50" Overall Length. The Super 40 Series Delta Flow Mufflers are developed from the Top Ten muffler...
      # 897132
    • (2 reviews)
      $104.88from $83.90 - $94.44
      Universal Super 44 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The Super 44 has the deepest, richest, most aggressive muscle tone of all 4” street...
      # 897136
    • (0 reviews)
      $170.50from $136.40 - $142.98
      Universal Super 50 Series Delta Flow™ (SUV) Performance Muffler by Flowmaster®, MODERATE SOUND, 5" Thick x 10" Wide x 17" Case Length x 23" Overall Length. The Super 50 is suitable for everyday driving. Its large resonance...
      # 897149
    • (0 reviews)
      $174.45$139.56
      Universal 50 Series Delta Flow™ Slimline Muffler by Flowmaster®, MODERATE SOUND. The 50 Series Delta Flow Slimline mufflers are designed for passenger cars. The sound characteristics are moderate exterior sound level and minimal...
      # 897156
    • (0 reviews)
      $183.63from $146.90 - $205.66
      Universal Pro Series™ Laminar Flow Muffler by Flowmaster®, MODERATE SOUND. PRO Laminar Flow mufflers have a patented core design that is characterized by efficient exhaust scavenging and minimized drone. They produce a rich, deep...
      # 897161
    • (0 reviews)
      $137.73from $110.18 - $178.38
      Universal Super HP-2™ Stainless Steel Performance Muffler by Flowmaster®, 4" Thick x 5" Wide. The new Super HP-2 Series muffler offers the same great performance benefits and moderate tone that you would expect from our laminar...
      # 15943155
    • (8 reviews)
      $219.99$175.99
      Universal S-Type™ Stainless Steel Round Muffler by Borla®. Get increased performance and the aggressive sound of power with this Universal S-Type Muffler. This is the same style austenitic stainless steel straight through muffler...
      # 25728287
    • (0 reviews)
      $306.24from $244.99 - $469.99
      Universal XR-1™ Multicore Stainless Steel Race Muffler by Borla®. The Borla XR-1 Multi-Core Muffler was developed on the race track to quiet the most severe engine noise without restricting power. They work so well that they're...
      # 959705
    • (0 reviews)
      $262.49$209.99
      Universal Heavy Duty Stainless Steel Round Muffler by Borla®, 3" Center Inlet / 3" Center Outlet. Get increased performance and the aggressive sound of power with this Heavy Duty Stainless Steel Round Muffler. This muffler includes...
      # 25728296
    • (0 reviews)
      $107.49from $85.99 - $137.66
      Universal CFT Superflow™ Oval Muffler by Gibson®. Get optimum usable power and a deep powerful sound with a Gibson CFT Superflow Muffler. The CFT Superflow has one of the lowest restriction ratings of any muffler on the market,...
      # 2060024
    • (1 reviews)
      $117.23from $93.78 - $291.94
      Universal SFT Superflow™ Round Muffler by Gibson®. Get increased exhaust flow for more power and great sound with a Gibson SFT Superflow Muffler. The SFT Superflow has one of the lowest restriction ratings of any muffler on the...
      # 2060137
    • (0 reviews)
      $216.01$172.81
      Universal Race Muffler by Gibson®. Inspite of the large host of engineers and technicians, Gibson Performance has not lost its commitment to building cost-effective exhaust systems that deliver more performance for less spendings....
      # 26542951
    • (0 reviews)
      $229.44from $183.55 - $199.29
      Universal 8" Round Muffler by Gibson®, 3.5" Center Inlet / 3.5" Center Outlet, 24" Length. Get increased exhaust flow for more power and great sound with a Gibson Muffler. The straight through, baffled and chambered design gives...
      # 26542948
    • (0 reviews)
      $120.83from $96.66 - $104.07
      Universal Pro Series™ T304 Stainless Steel Oval Muffler by MBRP®. These Pro Series mufflers utilize a chambered-core construction for a mellower but unmistakably MBRP sound character. They’re fabricated from long-lasting T304...
      # 14447764
    • (0 reviews)
      $58.48$46.78
      Universal Installer Series™ Aluminized Steel Oval Core Muffler by MBRP®. These Installer Series mufflers utilize a chambered-core construction for a mellower but unmistakably MBRP sound character. They’re fabricated from...
      # 14447537
    • (0 reviews)
      $75.76from $60.61 - $67.01
      Universal XP Series™ T409 Stainless Steel Oval Core Muffler by MBRP®. These XP Series mufflers utilize a chambered-core construction for a mellower but unmistakably MBRP sound character. They’re fabricated from long-lasting...
      # 14447775
    • (1 reviews)
      $91.99from $73.59 - $144.99
      Universal Installer Series™ Aluminized Steel Round Muffler by MBRP®. Short on space under your car for a muffler? A round muffler might just be the ticket to tuck in around a drive shaft or up near the cats. Choose whether you...
      Round form factor for tight spots16GA aluminized steel
      # 3724354
    • (0 reviews)
      $281.24from $224.99 - $244.99
      Universal Pro Series™ T304 Stainless Steel Round Muffler by MBRP®. Your car is for show and go; add a little show with this polished T304 stainless steel muffler from MBRP. The mirror finish won’t ever peel, flake or corrode....
      # 14446428



    Guides & Articles
    Regardless of whether you're shopping for a simple replacement muffler that delivers original equipment (OE) sound and performance or an upgraded muffler which provides a deeper growl with increased power through freer exhaust flow, you'll see choices between "direct fit" mufflers and "universal" mufflers. In this article, we'll help you understand the differences...
    It has been a battle of the ages to make exhaust sound like it should. Having less bends or turns will not only improve the sound but also performance. A custom exhaust is always an option for the race inspired and spirited weekend warriors. Our manufactures offer everything needed to build a custom exhaust to your preference.
    Headers are installed because the stock exhaust manifolds usually flow poorly. An exhaust header has individual tubes for each exhaust port, allowing each exhaust pulse to flow unobstructed from the cylinder head. The tubes on headers are usually larger in diameter than the runners on an exhaust manifold and the tubes are mandrel bent for gradual radius bends.
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    2004 Subaru WRX Exhausts Reviews
    Average rating:55 - 1 reviews
    5(5)
    APPEARANCE10
    EASE OF INSTALLATION10
    PRICE/VALUE10
    QUALITY10
    2003 Subaru WRX
    | Posted by | (Abiquiu, NM)

    Overall wonderful experience. From ordering the system to delivery and installation. And the sound is just right. Would highly recommend ordering this product from this company!

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    2004 Subaru WRX Models
    • 2004 Subaru Impreza WRX Performance Exhaust Systems
    • 2004 Subaru Impreza WRX STI Performance Exhaust Systems