2004 Subaru WRX Performance Exhaust Systems

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    • MagnaFlow® Street Series Cat-Back Exhaust System
      (0 reviews)
      # 35201460
      Subaru WRX 2004, Street Series Stainless Steel Cat-Back Exhaust System by MagnaFlow®. MODERATE SOUND. Single Straight Driver Side Rear Exit. 4" Polished Stainless Tip. The Street Series is designed for customers seeking increased...
      Moderate SoundDelivers More Horsepower
      $685.64 - $685.69
    • Borla® S-Type™ Stainless Steel Single Cat-Back Exhaust System
      (0 reviews)
      # 86041468
      Subaru WRX STI 2.5L 2004, S-Type™ Stainless Steel Single Cat-Back Exhaust System by Borla®, AGGRESSIVE PLUS SOUND. Single Left Rear Exit. 3" Tubing. 4.5" Inlet x 7.75" Length Single Round Rolled Angle-Cut Phantom Tip. When you...
      Aggressive Plus SoundIncreased exhaust flow for better performance
      $580.99
    • Borla® Touring™ Stainless Steel Single Cat-Back Exhaust System
      (0 reviews)
      # 50386767
      Subaru WRX 2004, Touring™ Stainless Steel Single Cat-Back Exhaust System by Borla®, MILD GROWL SOUND. Dual Left Rear Exit. 3" Tubing. 3.19" x 6" Inlet x 6" Length Dual Round Rolled Angle-Cut Long Tips. When you want the best...
      Mild Growl SoundHorsepower and torque increased by 7 – 10%
      $679.99
    • ARK Performance® N-II Stainless Steel Cat-Back Exhaust System with Polished Tip
      (0 reviews)
      # 16118542
      Subaru WRX 2004, N-II Stainless Steel Cat-Back Exhaust System with Polished Tip by ARK Performance®. 4.5" Single Tip. Tube Diameter: 3". The ARK N-II cat-back exhaust system offers straight-through technology, offset tip design,...
      All Bolt-on SystemStraight-through Muffler Core
      $881.30
    • HKS® Carbon-Ti Series 304 SS Cat-Back Exhaust System
      (0 reviews)
      # 70194013
      Subaru WRX / WRX STI 2004, Carbon-Ti Series 304 SS Cat-Back Exhaust System by HKS®. Tubing: 3". Tip Style: HP-Ti. Tip Size: 4.7". Professionally developed with a racer in mind, this HKS exhaust system provides an easy opportunity...
      Upgrades both the horsepower and sound of your vehicleMade from premium quality materials
      $709.53
    • HKS® Hi-Power Series 304 SS Cat-Back Exhaust System
      (0 reviews)
      # 78719820
      Subaru WRX / WRX STI 2004, Hi-Power Series 304 SS Cat-Back Exhaust System by HKS®. Tubing: 3". Tip Style: HP. Tip Size: 4.7". Professionally developed with a racer in mind, this HKS exhaust system provides an easy opportunity to...
      Upgrades both the horsepower and sound of your vehicleMade from premium quality materials
      $453.47
    • HKS® Sport Series 409 SS Exhaust System
      (0 reviews)
      # 70194010
      Subaru WRX / WRX STI 2004, Sport Series 409 SS Exhaust System by HKS®. Tubing: 3". Tip Style: DR. Tip Size: 4.2". Professionally developed with a racer in mind, this HKS exhaust system provides an easy opportunity to upgrade both...
      Upgrades both the horsepower and sound of your vehicleMade from premium quality materials
      $487.34
    • HKS® Super Turbo Series 304 SS Exhaust System
      (0 reviews)
      # 70194011
      Subaru WRX 2004, Super Turbo Series 304 SS Exhaust System by HKS®. Sound (Close): 90 dB. Sound (Idle): 73 dB. Tubing: 3". Tip Style: SSR. Tip Size: 4.9". Professionally developed with a racer in mind, this HKS exhaust system...
      Effective on stock to high performance vehicles w/ upgraded turbines.The performance exhaust sound meets the JASMA standard.
      $892.08
    • Agency Power® Cat-Back Exhaust System
      (0 reviews)
      # 15847517
      Subaru 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 statement...
      Suitable for Everyday DrivingIncreases Power
      $800.00
    • DC Sports® Polished Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 11019607
      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...
      $517.27
    • APEXi® NOIR Exhaust System
      (0 reviews)
      # 62613293
      Subaru WRX / WRX STI EJ20 Engine / EJ25 Engine GDA / GDB / GDF Sedan / Wagon 4 Door 2004, NOIR Exhaust System by APEXi®. Includes: NOIR Muffler, Piping, and all necessary hardware. The NOIR Muffler was developed specifically with...
      $617.05
    • APEXi® WS2 Exhaust System
      (0 reviews)
      # 62613294
      Subaru WRX / WRX STI EJ20 Engine / EJ25 Engine GDA / GDB / GDF Sedan / Wagon 4 Door 2004, WS2 Exhaust System by APEXi®. The WS Exhaust series is the APEXi answer to the ultimate street muffler system with all around performance....
      $656.12
    • AVO® Cat Back Exhaust
      (0 reviews)
      # 62402486
      Subaru WRX 2004, Cat Back Exhaust by AVO®. Piping: 3".
      $714.60
    • Invidia® N1 Racing Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 81935445
      Subaru WRX / WRX STI EJ205 / EJ255 / EJ257 2004, N1 Racing Stainless Steel Cat-Back Exhaust System by Invidia®. Piping size: 76mm. Tip: 101mm. For a good balance of price and performance, Invidia offers the motorsports enthusiasts...
      $540.40
    • Invidia® N1 Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 81935442
      Subaru WRX / WRX STI EJ205 / EJ255 / EJ257 2004, N1 Stainless Steel Cat-Back Exhaust System by Invidia®. Piping size: 76mm. Tip: 101mm. For a good balance of price and performance, Invidia offers the motorsports enthusiasts a...
      $617.40
    • Invidia® Q300 Cat-Back Stainless Steel Exhaust System
      (0 reviews)
      # 81935075
      Subaru WRX / WRX STI EJ205 / EJ255 / EJ257 2004, Q300 Cat-Back Stainless Steel Exhaust System by Invidia®. Piping size: 76mm. Tip: 110mm. The flat bottom shaped muffler design results in improved high speed aerodynamic performance....
      $648.20
    • PERRIN Performance® 304 SS Cat-Back Exhaust System with Single Tip
      (0 reviews)
      # 84938467
      Subaru WRX 2004, 304 SS Cat-Back Exhaust System with Single Tip by PERRIN Performance®. Tubing: 3". PERRIN Performance mufflers have a true 3" internal diameter for uninterrupted exhaust flow. PERRIN mufflers and flange connections...
      Straight-through muffler for uninterrupted exhaust flow4" slash cut exhaust tip adds an aggressive look
      $607.50
    • Tanabe® Medalion Touring Exhaust
      (0 reviews)
      # 61628536
      Subaru WRX / WRX STI 2004, Medalion Touring Exhaust by Tanabe®. Turbo Back Exhaust System. Piping: 80mm. Tip: 115mm. Sedan.
      $693.50
    • Buddy Club® Pro Spec Exhaust
      (0 reviews)
      # 85543345
      Subaru WRX 2004, Pro Spec Exhaust by Buddy Club®. The Buddy Club Pro Spec Exhaust is a super light weight and highly efficient muffler that is made to perform for circuit runs. In its street version, to optimize torque in the low...
      $700.00
    • Buddy Club® Stainless Steel Spec III Exhaust
      (0 reviews)
      # 85543346
      Subaru WRX 2004, Stainless Steel Spec III Exhaust by Buddy Club®. Buddy Club SPEC III exhaust systems are the lightest stainless-steel exhaust system on the market today. Its simple straight thru design creates an increase of...
      $665.10
    • Borla® Stainless Steel Header
      (0 reviews)
      # 1221560
      Subaru WRX / WRX STI Sedan 2004, Stainless Steel Header by Borla®. Primary Tube Diameter: 1.63". Collector Diameter: 2.25". 304 stainless steel for long life. Connects to the factory mid-pipe. Mandrel-bent for smooth curves. All...
      Austenitic 304 stainless steel tubing means a lifetime product that won’t ever corrode or deteriorateAll bends are mandrel-bent for smooth transitions and maximum flow characteristics
      $652.99
    • Agency Power® Stainless Steel Header
      (0 reviews)
      # 15847894
      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
      $700.00
    • DC Sports® Polished Stainless Steel Turbo Manifold
      (0 reviews)
      # 11019532
      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...
      $437.99
    • PERRIN Performance® 304 SS Equal Length Header
      (0 reviews)
      # 73693713
      Subaru WRX 2004, 304 SS Equal Length Header by PERRIN Performance®. Create a smoother sounding exhaust note while increasing horsepower with the PERRIN Equal Length Header
      Provides more horsepower and torque as well as quicker turbo response1.5" primary tubing ensures a precise fit
      $881.10 - $899.10
    • MagnaFlow® Direct Fit Federal OEM Grade Catalytic Converter with Header
      (0 reviews)
      # 85645752
      Subaru WRX 2004, Direct Fit Federal OEM Grade Catalytic Converter with Header by MagnaFlow®. 2.5" Inlet / 2" Outlet Diameter. 7.63" Width. Location: Front. Without Air Tube. If your car needs replacement, install one that will get...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $583.50
    • MagnaFlow® Direct Fit Federal OEM Grade Rear Catalytic Converter
      (0 reviews)
      # 85644769
      Subaru WRX / WRX STI 2004, Direct Fit Federal OEM Grade Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 7.63" Width. Location: Rear. Without Air Tube. If your car needs replacement, install one that will get...
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $398.76
    • MagnaFlow® Direct Fit Federal Pre-OBDII Catalytic Converter
      (0 reviews)
      # 61590407
      Subaru WRX 2004, Direct Fit Federal Pre-OBDII Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 7.63" Width. Without Air Tube. If your car needs replacement, install one that will get you through the smog check...
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $320.31 - $485.43
    • Skunk2® MegaPower™ Muffler
      (0 reviews)
      # 38815752
      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
      $162.99
    • APEXi® N1 Evo-R Muffler
      (0 reviews)
      # 79118431
      Subaru WRX / WRX STI EJ20 Engine / EJ25 Engine GDB / GDF Sedan / Wagon 4 Door 2004, N1 Evo-R Muffler by APEXi®. The N1 series muffler has become a staple of the import tuning industry. The N1 was the first of its kind to...
      $585.38
    • HKS® Stainless Steel Off-Road Downpipe
      (0 reviews)
      # 70195873
      Subaru WRX / WRX STI 2004, Stainless Steel Off-Road Downpipe by HKS®. Size: 3". Reduction of secondary exhaust gas back pressure will improve response of turbocharger. EJ engines' common problem of knocking due to high exhaust gas...
      Provides the passageway for exhaust gas which originates at the cylinder head and exits at the tail pipeMade from premium quality materials
      $132.16 - $329.57
    • Injen® Downpipe
      (0 reviews)
      # 379193
      Subaru WRX Sti 2004, Downpipe by Injen®. Eliminate restriction and maximize exhaust flow with this quality stainless steel downpipe.
      $302.18 - $439.88
    • Agency Power® Downpipes
      (0 reviews)
      # 15848165
      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
      $170.00 - $300.00
    • DC Sports® Polished Stainless Steel Turbo Up-Pipe
      (1 reviews)
      # 11019485
      Subaru WRX / WRX STI 2004, Polished Stainless Steel Turbo Up-Pipe by DC Sports®. DC Sports competition pipes delete the catalytic to eliminate restriction in the exhaust path and are dyno tuned to deliver incredible performance...
      $114.40
    • Invidia® Bellmouth Catless Down-Pipe
      (0 reviews)
      # 81935433
      Subaru WRX / WRX STI EJ205 / EJ255 / EJ257 2004, Bellmouth Catless Down-Pipe by Invidia®. Piping: 76mm. For a strong boost in power, the Invidia Down Pipe offers an alternative to other power-boosting enhancements. To see just how...
      $278.60 - $294.00
    • Invidia® Divorced Wastegate Down-Pipe
      (0 reviews)
      # 81935436
      Subaru WRX / WRX STI EJ205 / EJ255 / EJ257 2004, Divorced Wastegate Down-Pipe by Invidia®. Piping: 76mm. For a strong boost in power, the Invidia Down Pipe offers an alternative to other power-boosting enhancements. To see just how...
      $308.70 - $540.40
    • Invidia® Divorced Wastegate Down-Pipe with Extra O2 Bung
      (0 reviews)
      # 81935062
      Subaru WRX / WRX STI EJ205 / EJ255 / EJ257 2004, Divorced Wastegate Down-Pipe with Extra O2 Bung by Invidia®. Piping: 76mm. For a strong boost in power, the Invidia Down Pipe offers an alternative to other power-boosting...
      $323.40
    • Invidia® Up-Pipe
      (0 reviews)
      # 81935057
      Subaru WRX STI EJ205 / EJ255 / EJ257 2004, Up-Pipe by Invidia®. Piping size: 50mm.
      $156.10
    • PERRIN Performance® Stainless Steel Up-Pipe
      (0 reviews)
      # 82571317
      Subaru WRX 2004, Stainless Steel Up-Pipe by PERRIN Performance®. PERRIN has been known since inception for the quality of Up-Pipe. The Up-Pipe was the first product Perrin ever released and has been a leader in this market ever...
      CNC mandrel bent and precision welded stainless steel tubingSnugly fits the OEM, Aftermarket exhaust manifold outlet and turbo inlet
      $227.70 - $236.70
    • PERRIN Performance® 15mm Polyurethane Exhaust Hangers
      (0 reviews)
      # 84938480
      Subaru WRX 2004, 15mm Polyurethane Exhaust Hangers by PERRIN Performance®. When new, OEM rubber exhaust hangers are fine for the stock exhaust system. But they simply don't hold up or perform well in performance applications. Over...
      Help keep your exhaust system securely placedMade from polyurethane that is resistant to high and low temperatures
      $11.03
    • Invidia® Racing Exhaust Manifold
      (0 reviews)
      # 82182450
      Subaru WRX STI EJ255 / EJ257 2004, Racing Exhaust Manifold by Invidia®. Piping size: 42mm.
      $927.50
    • Cometic Gasket® 0.030" MLS Exhaust Head Gasket
      (0 reviews)
      # 61627148
      Subaru WRX / WRX STI 2004, 0.030" MLS Exhaust Head Gasket by Cometic Gasket®. Compressed Thickness: 0.030". Port Style: Stock. Cometic MLS Gaskets are comprised of multiple layers of stainless steel providing a even load across the...
      $39.70
    • Magnum Gasket® Exhaust Manifold Gasket Set
      (0 reviews)
      # 82704683
      Subaru WRX / WRX STI 2004, Exhaust Manifold Gasket Set by Magnum Gasket®. Standard. Magnum's Gasket engineers have utilized their many years of engine sealing experience to select the right technology choice for each of the Intake...
      $8.96
    • Bosal® Rear Catalytic Converter
      (0 reviews)
      # 49846359
      Subaru WRX 2004, Rear Catalytic Converter by Bosal®. 30" Overall Length. Includes O2 Sensor Port. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $228.95
    • Eastern® ECO II Direct Fit Catalytic Converter
      (0 reviews)
      # 17569965
      Subaru WRX STI 2004, ECO II Direct Fit Pre Cat Catalytic Converter by Eastern®. 24.5" Overall Length. Inlet Type 1: 5 Bolt Welded Inlet Flange. Outlet Type 1: 2 Bolt Welded Outlet Flange. One Front Gasket. One Rear Gasket. If you...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $225.01
    • DEC® Direct Fit Catalytic Converter
      (0 reviews)
      # 86075000
      Subaru WRX / WRX STI 2.0L 2004, Direct Fit Catalytic Converter by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters are made from a heavy...
      Direct fitMade from a heavy duty stainless steel outer shell
      $212.40 - $245.00
    • Walker® Quiet-Flow™ Stainless Steel Aluminized Round Muffler Assembly
      (0 reviews)
      # 85225495
      Subaru WRX 2004, Quiet-Flow™ Aluminized Round Muffler Assembly by Walker®. Inlet Diameter 1: 2". Inlet Configuration: Offset. Outlet Diameter: 2". Outlet Configuration: Offset. Overall Length: 46". Inlet / Outlet Quantity: 1...
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      $248.17
    • Ansa® Muffler
      (0 reviews)
      # 80702219
      Subaru WRX 2004, Muffler by Ansa®. This premium part is essential for completing a professional exhaust installation. The key a well-functioning vehicle is about purchasing only premium quality parts and hardware. ANSA makes its...
      Engineered to provide excellent exhaust system managementBuilt to the strict quality standards
      $99.04 - $230.64
    • Fel-Pro® Exhaust Manifold Gasket Set
      (0 reviews)
      # 19063994
      Subaru WRX / WRX STI 2004, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources,...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $11.76
    • Walker® Exhaust Gasket
      (1 reviews)
      # 87068705
      Subaru WRX 2004, Exhaust Gasket by Walker®. Inlet / Outlet Quantity: 1 Inlet / 1 Outlet.
      $2.80 - $14.21
    • Genuine® Exhaust Gasket
      (0 reviews)
      # 8921379
      Subaru WRX / WRX STI 2004, Exhaust Gasket by Genuine®. Intermediate pipe to Main Catalyst. Sealing Ring. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both...
      $31.49
    • Nippon Reinz® Exhaust Manifold Gasket
      (0 reviews)
      # 8720643
      Subaru WRX 2004, Exhaust Manifold Gasket by Nippon Reinz®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before...
      $26.19
    • Fel-Pro® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 40720474
      Subaru WRX 2004, Exhaust Pipe Flange Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the gaskets...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $8.22 - $18.58
    • Beck Arnley® Exhaust Manifold Gasket
      (0 reviews)
      # 52265954
      Subaru WRX / WRX STI 2004, Exhaust Manifold Gasket by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import...
      OE quality products from top original equipmentTop quality materials
      $13.13
    • AJUSA® Exhaust Manifold Gasket
      (0 reviews)
      # 23005818
      Subaru WRX 2.0L 2004, Exhaust Manifold Gasket by AJUSA®. These gaskets seal components in the intake and exhaust systems of the vehicle such as the intake manifold, intake plenum, and exhaust manifold to the engine or other...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $4.94
    • Ansa® Exhaust Gasket
      (0 reviews)
      # 80702212
      Subaru WRX 2004, Exhaust Gasket by Ansa®. This premium part is essential for completing a professional exhaust installation. The key a well-functioning vehicle is about purchasing only premium quality parts and hardware. ANSA makes...
      Engineered to provide excellent exhaust system managementBuilt to the strict quality standards
      $2.74 - $8.83
    • Ishino® Exhaust Flange Gasket
      (0 reviews)
      # 8299817
      Subaru WRX 2004, Exhaust Flange Gasket by Ishino®. Exhaust Manifold to Turbocharger Inlet Pipe.Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine...
      $11.23
    • DNJ Engine Components® Exhaust Manifold Gasket Set
      (0 reviews)
      # 81878665
      Subaru WRX 2004 Exhaust Manifold Gasket Set by DNJ Engine Components®. Get this top-grade quality replacement for your worn out part from DNJ. Expertly crafted from premium materials, this product is of the finest quality to...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $8.22 - $27.48
    • Tanabe® Down-Pipe
      (0 reviews)
      # 61628535
      Subaru WRX / WRX STI 2004, Down-Pipe by Tanabe®. Piping: 80mm.
      $370.50
    • AVO® Exhaust Uppipe
      (0 reviews)
      # 61628582
      Subaru WRX / WRX STI 2004, Exhaust Uppipe by AVO®.
      $211.69
    • Invidia® G200 Cat-Back Stainless Steel Exhaust System
      (0 reviews)
      # 81935074
      Subaru WRX / WRX STI EJ205 / EJ255 / EJ257 2004, G200 Cat-Back Stainless Steel Exhaust System by Invidia®. Piping: 76mm. Tip: 125mm. If performance is what you are seeking, the Invidia G200 Exhaust delivers. Each G200 Exhaust...
      $679.70




    Guides & Articles

    • Performance Parts
      Engines have often been compared to air pumps, because the engine that’s most efficient in terms of economy and power is the one that can get air in and out of its cylinders the easiest. That’s why most performance modifications like conical air filters, cold air intake systems, headers, and cat-back exhaust systems are aimed at making the intake and exhaust systems less restrictive. These parts increase the flow of air into the engine and ease the flow of exhaust gas out of the engine. Among these components, headers may be the most difficult to install. In this article, we’ll discuss what headers do, their different types, and how much performance they can add to your car.
    • Performance Parts
      You may be wondering why so many aftermarket performance exhaust system manufacturers are offering dual exhaust systems connected by "H-pipe" or "X-pipe" sections. After all, aren't two separate pipes, or so-called "true duals", the best for performance? The answer is no, but to understand why we have to examine how a typical internal combustion engine works.
    • Performance Parts
      It's an age-old question that many have asked. Will an aftermarket exhaust be worth the expense? While they definitely can be, an important question to ask yourself is do you care more about the deeper sound they’re designed to produce, or the added performance gained from being less restrictive? As car enthusiasts, we’ve become accustomed to associating the sound of a car with its exhaust. After all, doesn’t everyone have a childhood memory or two of a car and the particular sound it made?
    • Performance Parts
      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 between these two styles so you can make a more informed purchase.

    Popular Products

    2004 Subaru WRX Performance Exhaust Systems Reviews

    Average rating:  4.5  4.5 - 77 reviews
    4 of 5
    Supper Cool Sound!
    I bought this for my Mitsubishi and it sounds awesome! It's got a 3.5 l v6 and it makes it sound like its very souped up! And almost like it has a v8 in it. I couldn't be more happy with this product the sound will blow your mind on whatever you choose to put it on whether it be a six cylinder like I put it on or a v8 very much recommend this product if you want a really nearly sound.
    SPosted by Shawn (Shakopee, MN) /
    Was this review helpful for you? Yes
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