2011 Subaru WRX Performance Exhaust Systems

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    • (0 reviews)
      # 49218662
      Subaru WRX / WRX STI Sedan 2.5L 2011, Competition Series™ Stainless Steel Dual Cat-Back Exhaust System with Double Wall Tips by MagnaFlow®. Finish: Stainless. Exhaust Inlet Connection Type: Bolt On. Exhaust Pipe Material:...
      Aggressive SoundDelivers More Horsepower
      $894.67
    • (1 review)
      # 99143618
      Subaru WRX 2.5L 2011, Street Series™ Stainless Steel Cat-Back Exhaust System with Quad Split Rear Exit by MagnaFlow®. Finish: Stainless. Exhaust Inlet Connection Type: Bolt On. Exhaust Pipe Material: Stainless Steel. Exit...
      Moderate SoundDelivers More Horsepower
      $755.97 - $849.92
    • (0 reviews)
      # 58887565
      Subaru WRX / WRX STI Base Sedan 2.5L 2011, ATAK™ Stainless Steel Dual Cat-Back Exhaust System with Dual Round Rolled Angle-Cut Long Tips by Borla®. Exhaust Pipe Material: Stainless Steel. Exit Location: Dual Split Rear Exit. Exit...
      Super Aggressive SoundHorsepower and Torque Increased by 7 – 10%
      $946.99
    • (0 reviews)
      # 61459713
      Subaru WRX STI Wagon 2.5L 2011, S-Type™ Stainless Steel Dual Cat-Back Exhaust System with Dual Round Rolled Angle-Cut Long Tips by Borla®. Exhaust Pipe Material: Stainless Steel. Exit Location: Dual Split Rear Exit. Exit...
      Aggressive Plus SoundIncreased exhaust flow for better performance
      $899.99
    • (0 reviews)
      # 45867796
      Subaru WRX 2011, Sport™ 304 SS Cat-Back Exhaust System with Dual Rear Exit by Corsa®. Exhaust Inlet Connection Type: Bolt-On. Exhaust Pipe Material: 304 SS. Exit Location: Dual Rear Exit. Exhaust Type: Cat-Back. Main Piping...
      Robust and Bold Performance SoundNo Drone at Touring Speeds
      $1,200.38 - $1,491.78
    • (0 reviews)
      # 16118764
      Subaru WRX Sedan 2011, DT-S™ 304 SS Cat-Back Exhaust System by ARK Performance®. Exhaust Pipe Material: 304 SS. Exhaust Type: Cat-Back. With the many varieties of exhausts that ARK has to offer, the DT-Series premium exhaust...
      CNC Machined FlangesAll Bolt-on System
      $1,699.15 - $1,784.15
    • (0 reviews)
      # 16118830
      Subaru WRX 2011, GRiP™ 304 SS Cat-Back Exhaust System by ARK Performance®. Exhaust Pipe Material: 304 SS. Exhaust Type: Cat-Back. The ARK "GRiP" exhaust system provides the serious enthusiast a combination of sound, style, and...
      All Bolt-On SystemHelmholtz Design for Minimized Drone
      $1,529.15 - $1,699.15
    • (0 reviews)
      # 70194059
      Subaru WRX STI Base Sedan 2011, ES Premium Series™ 304 SS Exhaust System by HKS®. Exhaust Pipe Material: 304 SS. Main Piping Diameter: 2.6". Tip Inlet Diameter: 4.5". End of the silencer has difuser shape that will have shade...
      Sports & Elegant is the concept and products are designed to match with rear section of each vehicle.The compact silencer has sporty looking and the thick tip has elegant and premium appearance.
      $1,466.15
    • (0 reviews)
      # 97200247
      Subaru WRX Base Wagon Exclude Spec C with GRF Chassis 2011, Hi-Power Spec-L Series™ 304 SS Exhaust System by HKS®. Exhaust Pipe Material: 304 SS. Main Piping Diameter: 2.6" to 2". Tip Inlet Diameter: 3.7". Professionally...
      Upgrades both the horsepower and sound of your vehicleMade from premium quality materials
      $991.20
    • (0 reviews)
      # 70195937
      Subaru WRX 2011, Legamax Premium Series™ 304 SS Exhaust System by HKS®. Exhaust Pipe Material: 304 SS. Tip Outlet Diameter: 3.5" H x 2" W. Professionally developed with a racer in mind, this HKS exhaust system provides an easy...
      Upgrades both the horsepower and sound of your vehicleMade from premium quality materials
      $783.87 - $1,486.80
    • (0 reviews)
      # 97200656
      Subaru WRX Base 2011, Super Turbo Series™ 304 SS Exhaust System by HKS®. Exhaust Pipe Material: 304 SS. Main Piping Diameter: 3" to 2.4". Tip Inlet Diameter: 4.9". Professionally developed with a racer in mind, this HKS exhaust...
      Effective on stock to high performance vehicles w/ upgraded turbines.The performance exhaust sound meets the JASMA standard.
      $1,569.40
    • (1 review)
      # 379161
      Subaru WRX / WRX STI Base 2.5L 2011, Stainless Steel Axle-Back Exhaust System by Injen®. HP gain: up to 18.1 hp. TQ gain: up to 19.1. Exhaust Pipe Material: Stainless Steel. Exhaust Type: Axle-Back. Main Piping Diameter: 2.7"....
      Increases horsepower and torqueManufactured from 100% 304 stainless steel
      $849.15
    • (0 reviews)
      # 94683430
      Subaru WRX Base 2011, Cat-Back Exhaust System by Agency Power®. Exhaust Type: Cat-Back. The Cat-Back is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned exhaust note,...
      Suitable for Everyday DrivingIncreases Power
      $700.00 - $1,000.00
    • (0 reviews)
      # 19266358
      Subaru WRX Wagon 2011, Single Canister™ 304 SS Cat-Back Exhaust System by DC Sports®. Finish: Polished. Exhaust Pipe Material: 304 SS. Exhaust Type: Cat-Back. DC Sports exhaust systems are CNC Mandrel bent from T304 stainless...
      Individually tuned and dyno-tested for maximum performanceUses factory mounting locations for ease of installation and solid hangers for added durability
      $538.50
    • (0 reviews)
      # 71665849
      Subaru WRX Sedan 2011, Evolution GT™ 304 SS Cat-Back Exhaust System by GReddy®. Exhaust Pipe Material: 304 SS. Exhaust Type: Cat-Back.
      Retains unique Evolution off-set tip styling, while improving internal constructionHand TIG-weld 304 Stainless Steel
      $1,040.25
    • (0 reviews)
      # 85618714
      Subaru WRX STI 2011, Supreme SP™ 304 SS Cat-Back Exhaust System by GReddy®. Exhaust Pipe Material: 304 SS. Exit Configuration: Dual. Exhaust Type: Cat-Back. The legacy of the GReddy SP lives on with GReddy’s best version yet,...
      More refine exhaust note; inside and outHand TIG-weld 304 Stainless Steel
      $945.25 - $1,135.25
    • (0 reviews)
      # 79118436
      Subaru WRX STI Wagon 2011, Hybrid Mega Evo™ 304 SS Axle-Back Exhaust System by APEXi®. Exhaust Pipe Material: 304 SS. Exhaust Type: Axle-Back. Main Piping Diameter: 2.5". The Hybrid Megaphone Evolution is a complete stainless...
      All SUS304 stainless steel specification makes the exhaust system high qualityAll TIG welded. High quality and durability
      $832.74
    • (0 reviews)
      # 132243437
      Subaru WRX 2011, N1 Evo-R™ 304 SS Dual Cat-Back Exhaust System by APEXi®. Exhaust Pipe Material: 304 SS. Exhaust Type: Cat-Back. Main Piping Diameter: 3". Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 4.53". Muffler Type:...
      Ideal for the daily driver car of an enthusiastMade from high-quality materials
      $834.14 - $849.14
    • (0 reviews)
      # 132243434
      Subaru WRX / WRX STI Wagon 2011, RS Evo™ 304 SS Cat-Back Exhaust System by APEXi®. Exhaust Pipe Material: 304 SS. Exhaust Type: Cat-Back. Main Piping Diameter: 2.75". Includes: Titanium Tips. The RS Evolution Muffler is a hybrid...
      Matched and manufactured for select chassisHigh-level of quality using tig-welded SUS304 stainless steel uniting quiet performance with high-power performance gains
      $1,076.84 - $1,152.74
    • (0 reviews)
      # 62403790
      Subaru WRX 2011, Stainless Steel Cat-Back Exhaust System by AVO®. Exhaust Pipe Material: Stainless Steel. Exhaust Type: Cat-Back. Main Piping Diameter: 3". This AVO product is just the option for you in case you want to get the...
      Designed to boost your vehicle's performanceMade from high-quality materials
      $1,181.00 - $1,299.99
    • (0 reviews)
      # 116983688
      Subaru WRX / WRX STI 2011, Full Titanium™ Titanium Cat-Back Exhaust System by Invidia®. Exhaust Pipe Material: Titanium. Exhaust Type: Cat-Back. Main Piping Diameter: 3.15". Tip Outlet Diameter: 4.33". Bended forming, Piping...
      Casting Flanges beta 6/4 Titanium AlloyAwesome strength
      $1,330.00
    • (0 reviews)
      # 116983691
      Subaru WRX 2011, N1™ Cat-Back Exhaust System by Invidia®. Exhaust Type: Cat-Back. Tip Outlet Diameter: 3.98". For a good balance of price and performance, Invidia offers the motorsports enthusiasts a strong line-up of Invidia N1...
      Made to boost the performance of your vehicleExpertly crafted from premium materials
      $617.40 - $1,659.00
    • (0 reviews)
      # 116983700
      Subaru WRX 2011, N1™ Stainless Steel Racing Cat-Back Exhaust System by Invidia®. Exhaust Pipe Material: Stainless Steel. Exhaust Type: Cat-Back. Main Piping Diameter: 3". Tip Outlet Diameter: 3.98". For a good balance of price...
      Made to boost the performance of your vehicleExpertly crafted from premium materials
      $540.40
    • (1 review)
      # 81935472
      Subaru WRX 2011, Q300™ Stainless Steel Cat-Back Exhaust System by Invidia®. Exhaust Pipe Material: Stainless Steel. Exhaust Type: Cat-Back. Main Piping Diameter: 3". Tip Type: Rolled. Tip Outlet Diameter: 4.33". The flat bottom...
      SUS304 polished stainless steel pipingMandrel bent to shape
      $648.20 - $1,026.90
    • (1 review)
      # 73694089
      Subaru WRX 2011, 304 SS 304 SS Exhaust System by PERRIN Performance®. Exhaust Pipe Material: 304 SS. Move up to a powerful performance exhaust system with PERRIN. This top of the line exhaust system delivers not only aggressive...
      High tech V-band clamps for a perfect exhaust connectionMade of 304 stainless steel for excellent corrosion resistance
      $427.50 - $1,161.00
    • (0 reviews)
      # 1221560
      Subaru WRX / WRX STI Sedan / Wagon 2011, Header by Borla®. Primary Tubing Diameter: 1.63". Collector Outlet Diameter: 2.25". CARB Compliant: No. 304 stainless steel for long life. Connects to the factory mid-pipe. Mandrel-bent for...
      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
      $659.99
    • (0 reviews)
      # 114340338
      Subaru WRX / WRX STI 2011, 304 SS Turbo Exhaust Manifold by HKS®. You can have the great performance and great muffler sound of the isometric layout by changing exhaust manifold only with the stock oil pan layout. You will notice...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $758.37 - $1,205.72
    • (0 reviews)
      # 140490567
      Subaru WRX Base 2011, 304 SS 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 the high temperatures...
      $437.99
    • (0 reviews)
      # 81935395
      Subaru WRX / WRX STI 2.5L 2011, Exhaust Header by Invidia®. Piping Diameter: 1.65"-1.65"-1.97" (42 mm-42 mm-50 mm). Material: Stainless Steel. Do you want to get more power out of your vehicle? Then this superior Invidia product is...
      Made to boost the performance of your vehicleExpertly crafted from premium materials
      $1,083.60
    • (0 reviews)
      # 82182450
      Subaru WRX / WRX STI 2.5L 2011, Racing Exhaust Manifold by Invidia®. Piping Diameter: 1.65" (42 mm). Material: Stainless Steel. Do you want to get more power out of your vehicle? Then this superior Invidia product is just for you....
      Made to boost the performance of your vehicleExpertly crafted from premium materials
      $927.50
    • (0 reviews)
      # 99035901
      Subaru WRX / WRX STI 2011, EL 4-1 Performance Holy Header by Killer B Motorsport®. The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine optimal design to increase power as...
      High quality at an affordable priceExpertly made from premium materials
      $1,249.00 - $1,905.00
    • (0 reviews)
      # 84938654
      Subaru WRX / WRX STI 2011, Equal Length Header by PERRIN Performance®. Create a smooth sounding exhaust note while increasing horsepower and torque with the PERRIN E4-Series Equal Length Header. The new PERRIN E4-Series Equal...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $900.00 - $981.00
    • (0 reviews)
      # 70194046
      Subaru WRX / WRX STI 2011, 304 SS 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 pressure...
      Provides the passageway for exhaust gas which originates at the cylinder head and exits at the tail pipeMade from premium quality materials
      $437.78
    • (0 reviews)
      # 70194053
      Subaru WRX STI 2011, Legamax Center Pipe by HKS®. Pipe Size: 2.6". This product is made from materials of the highest possible quality to ensure exceptional durability to withstand the most severe conditions and serve you for years...
      Provides the passageway for exhaust gas which originates at the cylinder head and exits at the tail pipeMade from premium quality materials
      $425.39
    • (0 reviews)
      # 70193932
      Subaru WRX / WRX STI 2011, Stainless Steel Up-Pipe by HKS®. Polished Stainless Steel. Size: 45 mm. This product is made from materials of the highest possible quality to ensure exceptional durability to withstand the most severe...
      Provides the passageway for exhaust gas which originates at the cylinder head and exits at the tail pipeMade from premium quality materials
      $165.20
    • (0 reviews)
      # 379187
      Subaru WRX / WRX STI Base 2.5L 2011, Downpipe by Injen®. HP Gain: +24.6 hp. Torque Gain: +11.2 lbs. x ft.
      $344.25 - $455.18
    • (0 reviews)
      # 94683412
      Subaru WRX STI Base 2011, Pipe Material: Stainless Steel. 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...
      Gives your vehicle a serious performance boostPrecision engineered for your vehicle
      $170.00 - $350.00
    • (0 reviews)
      # 11019491
      Subaru WRX / WRX STI Sedan / Wagon 2011, Polished 304 SS 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...
      Dyno tuned to deliver incredible performance gains for your factory turbocharged vehicleWorks with the factory turbocharger with no modifications
      $318.32
    • (0 reviews)
      # 61628691
      Subaru WRX 2011, 3" Stainless Steel Downpipe with Catalytic Converter by AVO®. This AVO product is just the option for you in case you want to get the most out of your auto. It is made from first-rate materials to provide the...
      Designed to boost your vehicle's performanceMade from high-quality materials
      $690.00
    • (0 reviews)
      # 116983684
      Subaru WRX / WRX STI 2011, Divorced Wastegate Down-Pipe by Invidia®. Piping Diameter: 2.99" (76 mm). Material: Stainless Steel. Do you want to get more power out of your vehicle? Then this superior Invidia product is just for you....
      Made to boost the performance of your vehicleExpertly crafted from premium materials
      $323.40 - $555.10
    • (0 reviews)
      # 116983707
      Subaru WRX / WRX STI 2011, Up-Pipe by Invidia®. Material: Stainless Steel. Do you want to get more power out of your vehicle? Then this superior Invidia product is just for you. Carefully designed for maximum performance, is will...
      Made to boost the performance of your vehicleExpertly crafted from premium materials
      $156.10
    • (0 reviews)
      # 84938673
      Subaru WRX / WRX STI 2.5L 2011, 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...
      CNC mandrel bent and precision welded stainless steel tubingSnugly fits the OEM, Aftermarket exhaust manifold outlet and turbo inlet
      $227.70 - $236.70
    • (0 reviews)
      # 73693009
      Subaru WRX / WRX STI 2011, 12mm 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...
      Help keep your exhaust system securely placedMade from polyurethane that is resistant to high and low temperatures
      $11.03
    • (0 reviews)
      # 62403645
      Subaru WRX / WRX STI 2011, Exhaust Mount by Torque Solution®. Size: 12mm. Our 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
      $11.34 - $13.86
    • (0 reviews)
      # 61627148
      Subaru WRX / WRX STI 2011, 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...
      Made of High Quality MaterialsBuilt to Last
      $33.03
    • (0 reviews)
      # 116551717
      Subaru WRX / WRX STI 2.5L 2011, Exhaust Manifold Gasket Set by Magnum Gasket®. Standard Material. You'd better be ready to take the heat if you're going to seal an exhaust manifold, where temperatures can often exceed 1,000°F. You...
      Made of High Quality MaterialsThe best combination of steel layers and high-temp gasket materials
      $8.96
    • (0 reviews)
      # 99035798
      Subaru WRX / WRX STI 2011, Turbo Stud Set by Killer B Motorsport®,5 Pieces.
      High quality at an affordable priceExpertly made from premium materials
      $30.00
    • (0 reviews)
      # 165561579
      Subaru WRX 2.5L 2011, Replacement Exhaust Kit by AP Exhaust®. Catalytic Converter Substrate Material: Ceramic. Converter Body Material: Stainless Steel. Converter Configuration: Direct Fit. Outlet Type One: 2 Bolt Welded Flange....
      Superior replacement for your worn out exhaust partHelps put your vehicle back to its tip-top shape
      $258.76 - $274.92
    • (0 reviews)
      # 84263750
      Subaru WRX 2011, Passenger Side Exhaust Manifold by Dorman®. Finish: Natural. Material: Cast Iron. Exhaust Manifold Inlet Port Shape: Irregular. Flange Bolt Hole Quantity: 0. Flange Stud Hole Quantity: 3. With Installation...
      High Quality tubular construction protects against warping and/or crackingLeak-resistant for long-lasting performance
      $77.95
    • (0 reviews)
      # 111781671
      Subaru WRX 2458 CC 2011, Direct Fit Catalytic Converter by Eastern®. Outlet A: 2 Bolt Welded. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $254.36 - $254.70
    • (0 reviews)
      # 100278279
      Subaru WRX 2458 CC 2011, ECO III Universal Fit Rear Undercar Oval Catalytic Converter by Eastern®. Inlet A: 2.25". Outlet A: 2.25". Overall Length: 12". Converter Body Length: 8". Whether your catalytic converter is damaged by road...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $71.48
    • (0 reviews)
      # 140268018
      Subaru WRX / WRX STI 2.5L 2011, Front Catalytic Converter by DEC®. Location: Front. CARB Compliant: No. Converter Configuration: Direct Fit. Pick out a catalytic converter by DEC and get your emissions back into check without...
      Direct fitMade from a heavy duty stainless steel outer shell
      $300.44
    • (0 reviews)
      # 140268016
      Subaru WRX / WRX STI 2.5L 2011, Rear Catalytic Converter and Pipe Assembly by DEC®. Location: Rear. CARB Compliant: No. Converter Configuration: Direct Fit. Pick out a catalytic converter by DEC and get your emissions back into...
      Direct fitMade from a heavy duty stainless steel outer shell
      $212.40
    • (0 reviews)
      # 165561550
      Subaru WRX 2.5L 2011, Direct Fit Catalytic Converter by AP Exhaust®. Catalytic Converter Substrate Material: Ceramic. Converter Body Material: Stainless Steel. Converter Configuration: Direct Fit. Outlet Type One: 2 Bolt Welded...
      Manufactured from high quality materialsDesign meet needs of OBDII equipped vehicles
      $258.76 - $274.92
    • (0 reviews)
      # 8714319
      Subaru WRX / WRX STI 2011, Exhaust Manifold Gasket by Nippon Reinz®. Exhaust Manifold to Head. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $26.45
    • (0 reviews)
      # 35813805
      Subaru WRX / WRX STI 2.5L 2011, 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...
      OE quality products from top original equipmentTop quality materials
      $13.13
    • (0 reviews)
      # 81855339
      Subaru WRX 2.5L 2011, 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
    • (0 reviews)
      # 8784142
      Subaru WRX / WRX STI 2011, Exhaust Flange Gasket by Genuine®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but before you...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $16.26 - $28.37
    • (0 reviews)
      # 40720528
      Subaru WRX 2011, 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
      $8.42 - $18.79
    • (0 reviews)
      # 131292086
      Subaru WRX 2011, Front Exhaust Manifold Bolt and Spring Kit by Dorman®. Material: Steel. Bolt Grade: 5. Dog Point Fastener: No. Pilot Point Fastener: No. Package Type: Card. Includes: 1 Bolt, 1 Spring, 1 Nut. Exhaust manifold...
      New hardware helps fix exhaust leaksKits include hardware to securely attach the manifold to the exhaust system
      $8.30




    Guides & Articles

    • Performance Exhaust Systems
      Here's A "Tip": Exhaust Tips Are An Easy Way To Dress Up Your Tailpipe
      Performance exhaust systems give you improvements in power output, sound levels, and appearance, all in one package. But let's face it: not everyone has the spare change to buy and bolt up one of these kits. So you soldier on with what you have. And that may be a tired-looking exhaust system that is still functional. You've spent all day washing and waxing the vehicle's paint and chrome to perfection, but no degree of elbow grease will make that tailpipe look better.
    • Performance Exhaust Systems
      Are Headers Worth The Performance Improvement?
      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 Exhaust Systems
      Are X-pipes and H-pipes Better Than Straight Pipes on Dual Exhaust Systems?
      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 Exhaust Systems
      Power, Sound, Looks | Can I Have It All With a Cat-Back Exhaust System?
      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?
    • Bed Accessories
      Pickup Truck Cab And Bed Sizes Are Important When Selecting Accessories
      Americans love to have choices. Buying a dress shirt? Decide solid or stripe, short or long sleeve, cotton or poly blend, button or spread collar, regular fit, slim fit, or big & tall. How about a meal at your favorite steak house? Will it be porterhouse, T-bone, or sirloin? Cooked rare, medium-rare, or medium? With baked, mashed, or French fried potatoes? Thirsty for a fancy cup of coffee? Let's not even get started on options that let you end up with a "grande caramel macchiato with 1% low-fat milk, 2 Splendas, and an extra espresso shot".
    • Replacement Exhaust Parts
      Direct Fit vs. Universal Mufflers
      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

    2011 Subaru WRX Performance Exhaust Systems Reviews

    Average rating:  5  5 - 2 reviews
    5 of 5
    Perrin Cat-Back Exhaust High Quality
    This Cat-Back Exhaust is a must have upgrade for your WRX or STI. From the moment I opened the box I was impressed how carefully each piece was protected to avoid damage during shipping. I have a vast experience with different brands of exhaust, so I can easily spot products that were poorly made. But this one was an example of great craftsmanship. The Perrin Performance Cat-Back Exhaust is by far the highest quality exhaust I’ve had. The exhaust has V-band clamps to achieve tight exhaust connection. The V-band clamps can withstand much pressure and do so without the need for a gasket. This was my first time using V-band clamps and I was really satisfied with it.
    APosted by Adam (Carriere, MS) /
    2011 Subaru WRX
    Was this review helpful for you? Yes
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