Honda Civic Si Performance Exhaust Systems

Push your Honda Civic Si to stand out in power and sound with a new aftermarket exhaust system from CARiD. CARiD sells a wide variety of Honda Civic Si custom exhaust systems for all 1983 - 2013 Civic Si models. Each Honda Civic Si custom system is built to increase exhaust flow to the maximum for optimal performance. When spent gases have all been sucked into the exhaust system and are not clogging it, the engine effectively takes in clean air and fuel which it requires for power generation. Because their pipes are wider in diameter than those of the stock exhaust, custom exhaust systems reduce backpressure and subsequently increase horsepower. The stock exhaust system, being smaller, causes a rise in backpressure level which results in loss of horsepower. Borla, Flowmaster, MagnaFlow and Injen all have custom built exhausts for each Honda Civic Si model. Replace your stock exhaust system with any of these complete exhaust systems for 10% extra power and torque.

Using a performance header, muffler or catalytic converter alongside the custom exhaust system will give you between 10hp and 20hp more. All the brands mentioned above and others like RBP and Onki have a range of exhaust components that you can use alongside your exhaust system for additional boosts in performance. When buying both the complete exhaust system and individual exhaust components, it is important to choose the product that is designed for your year, model and trim in order to get maximum increase in horsepower, torque and efficiency. One other thing you’ll be grateful to the custom exhaust system for is better sound. All our Honda Civic Si exhaust systems have a roaring exhaust tone which becomes more aggressive with speed increases, but never gets out of control.

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    • Borla® Stainless Steel Exhaust System
      (16 reviews)
      # 229
      Stainless Steel Cat-Back Exhaust System by Borla®. When you want the best performing, best sounding, and highest quality exhaust system, you want Borla. Borla straight-through mufflers and mandrel-bent exhaust tubes are custom...
      $312.99 - $1,731.99
    • MagnaFlow® Street Series Exhaust System
      (74 reviews)
      # 598
      Street Series Exhaust System by MagnaFlow®. The Street Series is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned exhaust note, making a real statement within legal...
      $378.87 - $3,904.65
    • Spec-D® Exhaust System
      (25 reviews)
      # 2790
      Exhaust System 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 and mufflers with large diameter mandrel bent...
      $142.40 - $445.00
    • MagnaFlow® Direct Fit Catalytic Converter
      (31 reviews)
      # 839
      Direct Fit Catalytic Converter by MagnaFlow®. If your cat needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace the factory unit, with little or...
      $82.70 - $3,460.20
    • Flowmaster® American Thunder™ Exhaust System
      (53 reviews)
      # 25
      American Thunder™ Exhaust System by Flowmaster®. American Thunder gives you the Mild-Moderate Sound / Moderate Sound / Aggressive Sound / Moderate-Aggressive Sound / Mild Sound (depends on application and exhaust type) of a...
      $241.34 - $1,048.36
    • MagnaFlow® MagnaFlow Series Diesel Exhaust System
      (8 reviews)
      # 593
      MagnaFlow Series Diesel Exhaust System by MagnaFlow®. These premium line exhaust systems include mandrel-bent stainless steel tubing, polished 100% stainless steel mufflers, band clamps, and double wall tips. Magnaflow systems give...
      $391.65 - $3,466.09
    • Flowmaster® Catalytic Converter
      (13 reviews)
      # 44
      Catalytic Converter by Flowmaster®. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental regulations and, as all Flowmaster products, to deliver the best possible performance....
      $65.18 - $943.42
    • Flowmaster® Standard Duty Oval Catalytic Converter
      (13 reviews)
      # 838
      Standard Duty Oval Catalytic Converter by Flowmaster®. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental regulations and, as all Flowmaster products, to deliver the best...
      $65.18 - $943.42
    • Skunk2 Alpha Series™ Stainless Steel Race Header
      (1 reviews)
      # 7041
      Alpha Series™ Stainless Steel Race Header by Skunk2®. Increase the performance of your exhaust system with these Alpha Series headers. Designed to maximize exhaust flow, provide higher toque and more horsepower through the entire...
      $379.99 - $449.99
    • Flowmaster® dBX™ Exhaust System
      (2 reviews)
      # 37
      dBX™ Exhaust System by Flowmaster®. The dBX Series produces an exhaust note with the same moderate sound or mild-moderate sound, deep tone and great acceleration sound as the American Thunder systems at a lower decibel rate and...
      $325.30 - $723.04
    • Borla® Touring™ Stainless Steel Exhaust System
      (29 reviews)
      # 230
      Touring™ Stainless Steel Exhaust System by Borla®, MILD GROWL SOUND. When you want the best performing, best sounding, and highest quality exhaust system, you want Borla. Borla straight-through mufflers and mandrel-bent exhaust...
      $312.99 - $1,784.99
    • Flowmaster® 220 Series Stainless Steel Catalytic Converter
      (5 reviews)
      # 7124
      The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental regulations and, as all Flowmaster products, to deliver the best possible performance. The shells are made of stainless steel,...
      $65.18 - $349.07
    • Spec-D® Exhaust Header
      (4 reviews)
      # 2791
      Exhaust Header 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 and mufflers with large diameter mandrel bent...
      $80.10 - $356.00
    • Injen® Exhaust System
      (30 reviews)
      # 80
      Exhaust System by Injen®. The perfect complement to your Injen air intake system is an Injen performance exhaust system. Each exhaust system is dyno-tuned together with the air intake system to achieve maximum horsepower and torque...
      $202.73 - $1,158.98
    • Skunk2® MegaPower™ Muffler
      (0 reviews)
      # 7042
      MegaPower™ Muffler by Skunk2®. Skunk2 muffler is designed to maximize exhaust flow and power. Each muffler by Skunk2 is constructed from T-304 stainless steel and TIG welded to accurately fit other exhaust components. The muffler...
      $157.99



    Guides & Articles
    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...
    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.
    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...
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    Honda Civic Si Performance Exhaust Systems Reviews
    Average rating: 5 4.8 - 15 reviews
    (5)
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    2012 Honda Civic Si | Posted by Evan | (Atascadero, CA)

    Amazing exhaust system. Bought for s 2012 Honda Civic SI. Previously only had K&N typhoon intake. Product looks sounds and performs way better than expected. I hit 2nd or 3rd gear around town and keep and hold that loud tune everywhere i go. It significantly improves power especially higher end without the included silencer. With silencer you have more low end torque but a much quieter ride. I drive with out because opening up and getting on the freeway is much more enjoyable :) I couldn't have picked a better setup, and there's quite a few good ones to pick from. I'd buy right now if ur considering it. The look, feel, the sound and performance isn't to be matched. Sounds just like the video of the red Civic on the car I'd website. I will be needing a tune from hondatas flash pro. Air/fuel needs to be adjusted, probably timing and some over rev correction. The exhaust adds enough flow to be concerned. 5 stars!

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