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Upgrading the exhaust on a Honda Accord can change how the car breathes and sounds, and it affects drivability on the street. Choosing the right cat-back exhaust system matters because material quality, fitment accuracy, and muffler design determine durability, tone, and airflow improvements. This guide covers our six shortlisted cat-back exhaust systems for the Honda Accord and explains the evaluation criteria we used, including construction, compatibility, and sound character. Read on to see which features matter most for your intended use.
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Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Invidia Q300 Cat-Back Exhaust System with Rolled Stainless Tip |  |
| Best Quality Built to a higher standard if you want something more solid | MagnaFlow Street Series Cat-Back Exhaust System for 2017-2021 Honda Civic 1.5L |  |
| Best Budget The cheapest option that still gets the job done reliably | MagnaFlow Street Series Cat-Back Exhaust System 15686 for 1994–1997 Honda Accord |  |
| Most Sold A high-volume bestseller chosen again and again | aFe Takeda Dual Cat-Back Exhaust System for 2013-2014 Honda Accord Coupe V6 |  |
| Best Value for Money The sweet spot between price and what you get | Flowmaster Force II 817486 Cat-back Exhaust System |  |
| Best Overall The best all-around choice for most situations | Borla S-Type Cat-Back Exhaust System for 2018–2022 Honda Accord (140786) |  |
1. Invidia Q300 Cat-Back Exhaust System with Rolled Stainless Tip
| Piping material | SUS304 stainless steel |
|---|---|
| Piping style | Mandrel bent |
| Tip style | Double-wall rolled tip |
| Country of origin | Taiwan |
| Piping diameter | 70 millimeter |
This Invidia Q300 cat-back replaces the factory rear exhaust on a Honda Accord to improve flow, sound, and appearance. It uses mandrel-bent SUS304 piping, robot TIG welding, and a continuous internal piping design intended to lower back pressure for modest horsepower and torque gains while producing a deep, sporty tone without excessive rasp. The flat-bottom muffler shape is claimed to help high-speed aerodynamics and the kit includes polished double-wall rolled tips for a factory-quality finish. Typical installation is bolt-on to the factory hangers and flanges and reviewers note the system fits well and comes with necessary hardware. Limitations include its focus on sound and airflow rather than large power gains, and the unit is relatively heavy which may affect handling if weight reduction is a priority. Buyers should expect a noticeable but not extreme exhaust note and professional installation if you want perfect alignment and sealing.
Best for: Reliability-focused buyers who prioritize a durable, well-built cat-back that improves sound and flow while maintaining near-factory character.
Less Ideal for: Drivers who want the loudest possible aftermarket exhaust or who prioritize maximum weight savings and major power increases should consider alternatives.
- Mandrel-bent SUS304 stainless piping for durable, corrosion-resistant flow
- Robot TIG welded and CNC flange for consistent fit and long-term sealing
- Continuous internal piping and Advantex material designed to reduce back pressure and improve exhaust flow
- Polished double-wall rolled tips provide a factory-quality appearance and sound tuning
- Not marketed for large horsepower gains so peak power improvements are modest
- Relatively heavy product weight compared with lightweight performance systems
Verdict A solid, factory-quality cat-back that gives a deeper sporty tone and improved flow with reliable stainless construction, but not a major power or weight-saving upgrade.
2. MagnaFlow Street Series Cat-Back Exhaust System for 2017-2021 Honda Civic 1.5L
| Vehicle Fitment | 2017-2021 Honda Civic L4 1.5L |
|---|---|
| Main Piping Diameter | 2.25" |
| Tip Diameter | 4.5" |
| Tip Finish | Black Coated |
| Exit Style | Dual Center Rear |
This Street Series cat-back from MagnaFlow is a direct-fit performance exhaust designed for the 2017–2021 Honda Civic with the 1.5L L4 engine. It replaces the rear section of the factory system with 2.25" main piping, a straight-through stainless steel muffler and dual center rear tips to improve exhaust flow and produce a deeper, more resonant sound without excessive rasp. Installation is bolt-on and generally straightforward for a DIYer with basic tools, and the black-coated finish helps resist corrosion while keeping a stealthy look. Dyno-proven flow gains mean modest horsepower and torque improvements when paired with a complementary mid-pipe or tuning, and the system is tuned to offer a strong exterior presence while keeping interior cabin harshness controlled at cruising speeds. Expect some low-speed drone in certain setups, especially if other modifications are present. The system is built to last and uses factory-style connections, but buyers seeking the loudest or most aggressive race-style tone should consider alternatives tuned for maximum volume.
Best for: Performance-oriented buyers who want a durable, factory-quality upgrade that adds measurable flow and a deeper, refined exhaust note without compromising daily drivability.
Less Ideal for: Drivers seeking the loudest, race-style exhaust or those who need a completely drone-free aftermarket setup should consider other, more aggressive or specifically tuned systems.
- Direct-fit design tailored for 2017–2021 Honda Civic 1.5L for straightforward bolt-on installation
- 2.25" main piping and straight-through muffler improve flow for measurable performance gains
- Black-coated stainless steel construction resists corrosion and presents a polished stealth look
- Tuned for a deep, non-raspy MagnaFlow sound that balances exterior presence with cabin comfort
- Can produce noticeable low-speed drone in some vehicle setups or with other upgraded components
- Less aggressive volume than race-oriented systems for buyers prioritizing maximum loudness
Verdict A high-quality, direct-fit cat-back that sharpens flow and gives the Civic a deep MagnaFlow tone while staying suitable for daily driving.
3. MagnaFlow Street Series Cat-Back Exhaust System 15686 for 1994–1997 Honda Accord
| Fitment | 1994-1997 Honda Accord |
|---|---|
| Style | 2.25" Single rear exit |
| Model Name | MagnaFlow Performance Exhaust System 15686 |
This MagnaFlow Street Series cat-back replaces the factory rear exhaust from the catalytic converter back on 1994–1997 Honda Accords to deliver a deeper, throaty sound and improved exhaust flow. It is intended for bolt-on installation using the supplied hardware and hangers and is frequently used by DIYers or local shops to get a louder, sportier tone and modest performance gains. The system is described as stainless steel with robotic construction and dyno-proven tuning to enhance scavenging and throttle response. Buyers report generally good fitment to the Accord with occasional minor adjustments or trimming required at the resonator or flange area. Practical benefits include a lasting stainless construction, a single rear exit 2.25-inch piping for a balanced sound, and inclusion of mounting hardware. Expect some installation fiddling on older cars such as swapping worn rubber hangers, minor trimming, or different fasteners to achieve a perfect fit; some installers choose to weld joints for a cleaner finish. This system suits drivers who want the MagnaFlow sound and durable construction without chasing high-end race parts.
Best for: Budget-conscious Honda Accord owners who want a durable, factory-quality sounding cat-back that improves tone and flow without the cost of premium performance systems.
Less Ideal for: Enthusiasts seeking maximum power gains or a fully plug-and-play direct fit with zero modification should consider higher-end or model-specific alternatives.
- Tuned Street Series design produces a deep, throaty interior and exterior sound
- Stainless steel construction and CNC robotic fabrication for corrosion resistance and longevity
- Includes necessary hardware and hangers for installation
- Dyno-tested to improve exhaust flow and offer modest power and efficiency benefits
- Some vehicles require minor trimming, flange adjustments, or different fasteners for exact fitment
- Reports of missing or non-stainless fasteners in some shipments which may require replacement
Verdict A cost-conscious, durable cat-back that gives 1994–1997 Honda Accords a deeper MagnaFlow sound and improved exhaust flow with minor installation tuning possible.
4. aFe Takeda Dual Cat-Back Exhaust System for 2013-2014 Honda Accord Coupe V6
| Vehicle fit | 2013-2014 Honda Accord Coupe EX-L V6 3.5L |
|---|---|
| Material | 304 stainless steel |
| Inlet/primary tubing | 2.5 inch mandrel-bent |
| Tips | Dual laser-etched angle-cut stainless tips |
This aFe Takeda cat-back replaces the factory rear section from the flange back with mandrel-bent 304 stainless steel tubing, dual high-flow mufflers, and laser-etched stainless tips to produce a fuller tone and measurable power gains. It is a direct bolt-on for the 2013–2014 Accord Coupe EX-L V6 and includes all necessary hardware so installation typically requires no cutting or fabrication. The system uses a mitered merge collector and dual 1.75 inch outlets to tune exhaust flow for improved throttle response and the company reports gains up to 10 horsepower and 21 lb-ft of torque in testing. In real-world use the exhaust stays subdued during cruising yet opens up to an aggressive note at high RPM, making it suitable for daily driving with occasional spirited acceleration. Important limitations are that it is specific to the Accord Coupe V6 and produces a louder sound than stock, so it may not suit drivers seeking a near-silent replacement or those with strict local noise restrictions.
Best for: Drivers who want a reliable, factory-quality upgrade that improves throttle response and adds a sportier tone while keeping a bolt-on installation and low risk.
Less Ideal for: Buyers seeking a quiet, near-stock sound or those who need a universal or multi-model solution should look elsewhere.
- Direct bolt-on fitment for 2013–2014 Accord Coupe V6 with included hardware
- Mandrel-bent 304 stainless steel tubing and TIG welds for corrosion resistance and durable construction
- Mitered merge collector and dual mufflers tuned to improve exhaust flow and throttle response
- Dual polished, laser-etched tips provide a finished look and deeper exhaust character at high RPM
- Louder than factory exhaust which may bother noise-sensitive drivers or violate local restrictions
- Fitment limited to the specified Accord Coupe V6 application so not suitable for other models
Verdict A factory-style, direct-fit stainless cat-back that adds power and an aggressive high-RPM tone for Accord Coupe V6 owners who want a low-risk performance upgrade.
5. Flowmaster Force II 817486 Cat-back Exhaust System
| Manufacturer | Flowmaster |
|---|---|
| Model | 817486 |
| Exterior | Painted |
The Flowmaster Force II cat-back is a bolt-on exhaust system intended to replace the factory rear section and deliver a deeper, moderate sound without excessive cabin drone. It installs using factory hanger locations and mandrel-bent stainless steel tubing for smoother exhaust flow, and includes both side and rear exit tailpipes to match different visual preferences. In real-world use this system gives a noticeable but controlled rumble under acceleration, and reviewers report easier highway cruising with little added interior noise. Installation is straightforward for a DIYer with basic garage tools, though several owners found the supplied clamps need careful torqueing or replacement to avoid leaks or loose sections. The system is marketed to improve torque and throttle response, which drivers should feel at lower RPMs rather than dramatic power gains. Expect a good balance of sound and durability for the price, but plan to bring an impact wrench and consider stronger clamps or welding if you want a more permanent fit.
Best for: A practical optimizer who wants a reliably louder, fuller exhaust tone and modest drivability gains without overspending, and who prefers a mostly bolt-on upgrade they can fit at home with basic tools.
Less Ideal for: Buyers seeking maximum horsepower gains or a highly aggressive race sound should consider performance-oriented systems instead.
- Mandrel-bent stainless steel tubing for improved exhaust flow
- Uses factory hanger locations for a bolt-on installation
- Moderate, throaty sound that avoids excessive cabin drone
- Includes side and rear exit tailpipe options for styling preference
- Supplied clamps are reported to be weak and may require replacement or welding
- Some fitment instances required adjustments to tailpipe tips or welding for a secure attachment
Verdict A budget-friendly cat-back that delivers a controlled, throaty sound and easy bolt-on fitment for drivers wanting noticeable tone and modest performance feel, but bring better clamps or plan for minor tweaks.
6. Borla S-Type Cat-Back Exhaust System for 2018–2022 Honda Accord (140786)
| Fitment | 2018–2022 Honda Accord 1.5T and 2.0T |
|---|---|
| Material | T-304 Stainless Steel |
| System type | Cat-back |
| Construction | All welded |
The Borla S-Type cat-back replaces the factory rear section with a bolt-on stainless steel system tuned for the 2018–2022 Honda Accord 1.5T and 2.0T engines. It installs using existing hangers and supplied hardware and is built from T-304 stainless for corrosion resistance and long life. The system is voiced to deliver a noticeably sportier, aggressive exhaust note under acceleration while remaining refined at cruise thanks to Borla’s no-drone design. That makes it suitable for daily driving as well as spirited runs without constant cabin drone. Customers report straightforward installation and good fitment to the Accord chassis, though one reviewer noted a bent bracket on arrival that required minor straightening. The system does not include exhaust tip adapters or ring gaskets in some cases, so expect to confirm all small consumables before disassembly. If you want a durable, factory-quality replacement that adds character without turning the Accord into a loud track car, this S-Type hits the balance most buyers will appreciate.
Best for: Balanced drivers who want a single upgrade that improves sound and character without compromising daily comfort or longevity.
Less Ideal for: Drivers seeking an aggressive, track-level soundtrack or those who prefer a simple muffler delete should consider louder performance options instead.
- T-304 stainless construction for corrosion resistance and durability
- Engine-specific tuning for the Accord 1.5T and 2.0T that produces a sporty yet refined tone
- Bolt-on design uses factory hangers for straightforward installation
- Engineered to minimize cabin drone during cruising speeds
- May arrive with minor shipping damage to brackets requiring adjustment
- Some needed small parts such as ring gaskets or tip adapters are not always included
- Not tuned for an extreme or track-focused sound so it is milder than full-performance options
Verdict A durable, well-tuned cat-back for 2018–2022 Accords that adds a sporty voice while prioritizing comfort and build quality.
Choosing the Right Honda Accord Cat-back Exhaust System: Key Factors to Consider
Material and Corrosion Resistance
The pipe and muffler materials determine long-term durability and how the exhaust weathers road conditions. Stainless steel alloys resist rust better than mild steel and hold a finish longer, which lowers the chance of leaks and failures over time.
Surface treatments and thickness matter as well because thin tubing corrodes faster. For a Honda Accord, choosing a corrosion-resistant material helps ensure the system lasts through winter exposure and frequent road salt without loss of structural integrity.
Fitment and Vehicle-Specific Design
A cat-back exhaust designed specifically for the Honda Accord will align with factory hangers, clearance points, and the stock catalytic converter location. Proper fitment reduces the need for cutting, bending, or aftermarket adapters, which keeps installation straightforward and reduces vibration or rattling.
Vehicle-specific components also preserve ground clearance and prevent interference with suspension parts, mufflers, or heat-sensitive components under the car.
Muffler Style and Sound Character
Muffler design dramatically influences the exhaust note, resonance, and cabin drone at cruising speeds. Chambered mufflers emphasize deep tones, straight-through designs offer a more aggressive, higher-frequency sound, and packing density affects midrange volume.
Consider how often you drive on highways versus around town because some designs may produce drone during steady throttle. Matching muffler style to your desired balance of aggression and daily comfort is key.
Flow and Performance Impact
A cat-back system should reduce backpressure and improve exhaust flow without sacrificing low-end torque. Smooth bends, consistent pipe diameter, and optimized muffler internals help the engine expel gases more efficiently and can support modest power gains when combined with other engine upgrades.
Look for systems that maintain an appropriate pipe diameter for the Accord's engine size to avoid losing low-end response while gaining high-rpm flow.
Installation Complexity and Hardware
Some systems bolt directly to the factory flange and reuse OEM hangers, while others require new clamps, gaskets, or slight modifications. Ease of installation affects both labor time and the opportunity for proper sealing.
Systems that include high-quality clamps, gaskets, and clear instructions reduce the chance of leaks and simplify do-it-yourself installation. Factor in whether you have access to basic lifts or jack stands when estimating difficulty.
Tip Options and Aesthetics
Exhaust tips affect the vehicle's visual finish and can influence how exhaust gases exit. Polished or rolled-edge tips can resist discoloration and present a refined look, while larger or slash-cut tips offer a more aggressive appearance.
Consider tip diameter and orientation to ensure they do not protrude excessively or interfere with rear bumper cutouts. A style that complements the Accord's rear profile helps achieve a cohesive upgrade.
FAQ
Will a cat-back exhaust system change my Honda Accord's sound noticeably?
Yes, most cat-back systems alter the exhaust tone because they replace the piping and muffler downstream of the catalytic converter. The degree of change depends on muffler type and pipe diameter. Expect a range from subtle deepening to a more aggressive note depending on design.
Is installation of a cat-back system on a Honda Accord something I can do at home?
Many cat-back systems are designed to bolt up to factory hangers and can be installed with basic tools and a lift or jack stands. Complexity varies, so check whether the system includes all necessary hardware and instructions. Some installations are straightforward, while others benefit from a professional for best alignment.
Does upgrading to a cat-back exhaust affect emissions or require modifications to the catalytic converter?
A true cat-back system replaces components behind the catalytic converter, so it does not alter the catalytic converter itself. It usually does not affect emissions equipment. However, local regulations vary, and some jurisdictions have rules about aftermarket exhaust noise and emissions compliance.
How does pipe diameter influence performance on a Honda Accord?
Pipe diameter affects flow and backpressure. Too small a diameter can restrict high-rpm performance, while too large a diameter can reduce low-end torque. Choosing a diameter matched to the Accord's engine size helps preserve responsiveness while allowing better high-rpm airflow.
Are stainless steel cat-back systems worth it for longevity?
Stainless steel options generally offer better corrosion resistance and longer service life than mild steel. That durability can be valuable if you keep the vehicle for several years or drive in corrosive conditions. The tradeoff is typically higher initial material quality and longer-term reliability.
How We Chose the Best Honda Accord Cat-back Exhaust System
We shortlisted cat-back exhaust systems that specifically fit the Honda Accord and focused on measurable build and performance attributes. Primary evaluation criteria included material and corrosion resistance, precise vehicle-specific fitment, muffler and tip design for sound character, and the quality of welds and hangers for long-term durability. We also assessed ease of installation with common tools and the availability of hardware and clear instructions. Excluded items included universal-fit assemblies that require extensive modification, systems designed only for competition use, and setups that change emission control components. Our process prioritized systems that balance daily drivability with audible improvement, using objective fitment and construction factors rather than subjective brand reputation or pricing.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing a Honda Accord cat-back exhaust system, prioritize material quality, precise fitment, and the muffler style that matches your sound and driving preferences. Balance desired sound levels with potential cabin drone and the effect on everyday drivability. Consider installation complexity and whether the system includes proper hardware. Focusing on these factors will help you pick a system that delivers the performance character and longevity you want without unnecessary compromises.
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