2004 Subaru WRX Performance Exhaust Systems

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    • (0 reviews)
      # mpn1156302
      Subaru WRX / WRX STI 2004, OEM Grade Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by MagnaFlow®. Position: Front. Primary Tubing Diameter: 2.5". Collector Outlet Diameter: 2.5". Emissions: EPA compliant. Color:...
      $583.50
    • (0 reviews)
      # 332947431
      Subaru WRX 2004, Stainless Steel Long Tube Exhaust Header by Borla®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.25". Emissions: Racing Only. Color: Silver. Header Coating: Uncoated. Header Style: Long Tube. 304...
      $659.99
    • (0 reviews)
      # mpn457857379
      Subaru WRX STI 2.5L 2004, Stainless Steel Exhaust Header by Invidia®. Emissions: Racing Only. Do you want to get more power out of your vehicle? Then this superior Invidia product is just for you. Carefully designed for maximum...
      $1,083.60
    • (0 reviews)
      # mpn457857380
      Subaru WRX STI 2.5L 2004, Stainless Steel Exhaust Manifold by Invidia®. Emissions: Racing Only. Do you want to get more power out of your vehicle? Then this superior Invidia product is just for you. Carefully designed for maximum...
      $927.50
    • (0 reviews)
      # 781398765
      Subaru WRX 2004, 304 SS Polished Long Tube Exhaust Header with Up-Pipe by Torxe™. Primary Tubing Diameter: 1.5". Collector Outlet Diameter: 2". Emissions: Racing Only. Finish: Polished. Color: Silver. Header Style: Long Tube. This...
      $212.50
    • (0 reviews)
      # mpn2268380051
      Subaru WRX / WRX STI 2004, 304 SS Exhaust Manifold by DC Sports®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 2". Emissions: Racing Only. Color: Silver. Header Coating: Uncoated. DC Sports Turbo Manifolds are the perfect...
      $437.99
    • (0 reviews)
      # 84938475
      Subaru WRX / WRX STI 2004, Equal Length Stainless Steel Exhaust Header by PERRIN Performance®. Emissions: EPA compliant. Color: Gray. Header Coating: Uncoated.
      $972.00 - $981.00
    • (0 reviews)
      # 380887193
      Subaru WRX STI 2.5L 2004, Heavy Metal Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Without Air Tube. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". If your car needs...
      $320.31 - $485.43
    • (0 reviews)
      # 317064248
      Subaru WRX 2004, Heavy Metal Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5"....
      $100.27 - $105.95
    • (0 reviews)
      # 317064255
      Subaru WRX / WRX STI 2.0L with LEV Standard / with LEV1 Standard 2004, OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube....
      $179.02 - $185.78
    • (0 reviews)
      # mpn1156305
      Subaru WRX STI 2.5L 2004, OEM Grade Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Position: Rear. Without Air Tube. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5"....
      $398.76
    • (0 reviews)
      # 317064258
      Subaru WRX 2004, OEM Grade Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5"....
      $119.49 - $122.43
    • (0 reviews)
      # mpn4478920876
      Subaru WRX / WRX STI 2004, Stainless Steel Downpipe by Megan Racing®. Material: Stainless Steel. Megan Racing Stainless Steel Down-pipes are made of the same high-quality T-304 that is utilized in Megan Racing Headers and Turbo...
      Version 2 includes thicker gauge steel piping and a new and improved finish and quality100% T-304 Stainless Steel with computerized mandrel-bends
      $170.06
    • (0 reviews)
      # 81935433
      Subaru WRX 2004, 304 SS Bellmouth Non-Catted Downpipe by Invidia®. Material: 304 SS. Main Piping Diameter: 2.99" (76 mm). Do you want to get more power out of your vehicle? Then this superior Invidia product is just for you. Carefully...
      Made to boost the performance of your vehicleExpertly crafted from premium materials
      $278.60 - $294.00
    • (0 reviews)
      # 81935436
      Subaru WRX 2004, Stainless Steel Downpipe by Invidia®. Material: Stainless Steel. Main Piping Diameter: 2.99" (76 mm). Do you want to get more power out of your vehicle? Then this superior Invidia product is just for you. Carefully...
      Made to boost the performance of your vehicleExpertly crafted from premium materials
      $308.70 - $540.40
    • (0 reviews)
      # mpn457857302
      Subaru WRX STI 2.5L 2004, Stainless Steel Up Pipe by Invidia®. Material: Stainless Steel. Main Piping Diameter: 1.97" (50 mm). With EGT Sensor Bung. Do you want to get more power out of your vehicle? Then this superior Invidia product...
      Made to boost the performance of your vehicleExpertly crafted from premium materials
      $156.10
    • (0 reviews)
      # mpn469959622
      Subaru WRX / WRX STI 2004, 409 SS Off-Road Downpipe by HKS®. Material: 409 SS. 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
      $125.72
    • (0 reviews)
      # mpn469959706
      Subaru WRX / WRX STI 2004, Stainless Steel Polished Up Pipe by HKS®. Material: Stainless Steel. Main Piping Diameter: 1.77". This product is made from materials of the highest possible quality to ensure exceptional durability to...
      Provides the passageway for exhaust gas which originates at the cylinder head and exits at the tail pipeMade from premium quality materials
      $157.14
    • (0 reviews)
      # mpn2564548
      Subaru WRX STI 2004, 304 SS Up Pipe by Agency Power®. Material: 304 SS. 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...
      Gives your vehicle a serious performance boostPrecision engineered for your vehicle
      $170.00
    • (0 reviews)
      # 379193
      Subaru WRX 2004, Downpipe by Injen®. Eliminate restriction and maximize exhaust flow with this quality stainless steel downpipe.
      $374.21 - $544.74
    • (0 reviews)
      # mpn4498787380
      Subaru WRX / WRX STI 2004, 304 SS Polished Turbo Downpipe by DC Sports®. Material: 304 SS. DC Sports competition pipes delete the catalytic to eliminate restriction in the exhaust path and are dyno tuned to deliver incredible...
      Dyno tuned to deliver incredible performance gains for your factory turbocharged vehicleWorks with the factory turbocharger with no modifications
      $271.92
    • (0 reviews)
      # mpn2831856645
      Subaru WRX / WRX STI 2004, Racing Stainless Steel Downpipe by Spec-D®. Material: Stainless Steel. Make whatever you drive run and sound like a high-performance machine with a Spec-D Exhaust System. The Spec-D system replaces your...
      Dramatically improved exhaust flow compared to restrictive stock systemImproved engine breathing enables increased power output for better performance
      $114.38
    • (0 reviews)
      # 901113849
      Subaru WRX 2004, Rotated Turbo Downpipe by PERRIN Performance®. Designed utilizing the latest technology, this product by PERRIN features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $585.00
    • (0 reviews)
      # 901105849
      Subaru WRX 2004, Rotated Turbo Downpipe and Up Pipe Kit by PERRIN Performance®. Designed utilizing the latest technology, this product by PERRIN features premium quality and will perform better than advertised. Perfect for your vehicle...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $918.00
    • (0 reviews)
      # 901195849
      Subaru WRX 2004, Rotated Turbo Up Pipe by PERRIN Performance®. Designed utilizing the latest technology, this product by PERRIN features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $342.00
    • (0 reviews)
      # 82571317
      Subaru WRX 2004, 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 since. Up-Pipe is one of...
      CNC mandrel bent and precision welded stainless steel tubingSnugly fits the OEM exhaust manifold outlet and OEM turbo inlet
      $148.50 - $236.70
    • (0 reviews)
      # 840174198
      Subaru WRX STI 2.5L 2004, 304 SS Downpipe by TurboXS®. Material: 304 SS. Two-piece design. Spare wideband oxygen sensor bung included. Modified pipe path to provide more ground clearance for lowered cars than previous design. Are you...
      Fits both manual and automatic transmission vehicles304 Stainless Steel Construction
      $485.10 - $575.10
    • (0 reviews)
      # mpn458193544
      Subaru WRX / WRX STI 2004, Exhaust Mount by Torque Solution®. Torque Solution® exhaust mounts will reduce exhaust movement and vibrations both under extreme racing conditions and daily street driving. Great compliment to any exhaust...
      Eliminates Exhaust MovementMade From High Grade Polyurethane
      $39.84
    • (0 reviews)
      # mpn461609134
      Subaru WRX STI 2.5L 2004, Downpipe Thermal Blanket by PERRIN Performance®. PERRIN Thermal Blankets will improve response while lowering under hood temperatures. Thermal losses from headers, uppipes, turbine housings, and downpipes, cool...
      Improves power while lowering under hood temperaturesEnsures a precise fit to protect under hood components from heat
      $202.50
    • (0 reviews)
      # 427377499
      Subaru WRX STI 2004, Exhaust Hanger by Kartboy®. 15mm is diameter of the center holes. Material: Polyurethane. Black polyurethane exhaust hanger from Kartboy provides an easy way to stop your exhaust system from moving and bumping....
      Designed to help you get the maximum out of your ridePerfect solution for hardcore racers and rookies alike
      $8.00 - $9.00
    • (0 reviews)
      # mpn458181552
      Subaru WRX / WRX STI 2004, Multi-Layer Steel Exhaust Header Gasket by Cometic Gasket®. Material: Multi-Layer Steel. Exhaust Gaskets are designed for extreme cylinder pressures. MLS Exhaust Manifold Gaskets maintain a torque set and...
      Made of High Quality MaterialsBuilt to Last
      $33.03
    • (0 reviews)
      # 551059271
      Subaru WRX 2004, Replacement Exhaust Kit by Ansa®. If you're in need of a durable and efficient replacement exhaust part, rely on this OE-quality product from Ansa that provides both perfect fit and superior functionality for years to...
      Completely compatible with your OE-unitFactory design to ensure a perfect fit
      $71.08 - $181.40
    • (0 reviews)
      # 114818237
      Subaru WRX 2004, Replacement Exhaust Kit by Walker®. If you are looking for the ultimate in quality and value, then this superior replacement exhaust kit by Walker is what you need. All its components are designed with precision...
      Direct fit replacementIncludes all applicable flanges, hangers, and sensor fittings
      $74.03 - $254.39
    • (0 reviews)
      # 551106263
      Subaru WRX 2004, Replacement Exhaust Kit by Bosal®. Get confidence with this high-standard OE quality purchase which is perfect for those who want to perform a long-lasting exhaust system repair. Made from top-notch materials, this...
      Superior replacement for your worn out exhaust partHelps put your vehicle back to its tip-top shape
      $63.61 - $297.31
    • (0 reviews)
      # 165561459
      Subaru WRX STI 2.5L 2004, Replacement Exhaust Kit by AP Exhaust®. Get confidence with this high-standard OE quality purchase which is perfect for those who want to perform a long-lasting exhaust system repair. Made from top-notch...
      Superior replacement for your worn out exhaust partHelps put your vehicle back to its tip-top shape
      $109.19 - $308.58
    • (0 reviews)
      # 211530080
      Subaru WRX 2004, Ultra™ Catalytic Converter by Walker®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Position: Rear. Catalytic Converter Body Shape: Small Oval. With 1 Inlet. Without Air Tube. Without O2 Sensor...
      5 Year / 50,000 Miles Warranty on Structural Components5 Year / 50,000 Miles Warranty on Exhaust Emission (CARB Models)
      $74.03
    • (0 reviews)
      # 212123563
      Subaru WRX with Federal Emission 2004, Catalytic Converter by Bosal®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Position: Center. If you’re in need of a replacement catalytic converter, you can’t do better than...
      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
      $297.31
    • (0 reviews)
      # 842158641
      Subaru WRX with Federal Emission 2004, Catalytic Converter and Pipe Assembly by Bosal®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Overall Length: 24". If you’re in need of a...
      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
      $141.39
    • (0 reviews)
      # mpn1258167
      Subaru WRX STI 2.5L 2004, ECO II Pre-Cat Catalytic Converter by Eastern®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Position: Front Undercar. Without O2 Sensor Ports. Catalytic Converter Overall Length: 24.5". If...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $225.80
    • (0 reviews)
      # 86075000
      Subaru WRX / WRX STI 2.0L 2004, Catalytic Converter by DEC®. Converter Configuration: Direct Fit. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters...
      Direct fitMade from a heavy duty stainless steel outer shell
      $205.63 - $369.85
    • (0 reviews)
      # 842262631
      Subaru WRX / WRX STI 2.0L 2004, Catalytic Converter and Pipe Assembly by DEC®. Converter Configuration: Direct Fit. Position: Rear. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail...
      Direct fitMade from a heavy duty stainless steel outer shell
      $198.49 - $369.85




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    Popular Products



    2004 Subaru WRX Performance Exhaust Systems Reviews

    Average rating:  4.5  4.5 - 2 reviews
    4.5 of 5
    Header
    The header is really nice, it has really nice welds on it compared to just cheap eBay header. It has a adjustable length on it to let you expand it by maybe an inch if you need just in case its a tight fit. Overall I love this header for the price and quality. Thanks CARiD!
    CPosted by Collin (Poughkeepsie, NY) / February 22, 2017
    2003 Subaru WRX
    Was this review helpful for you? Yes
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