Lexus RC 350 F Sport Exhaust Upgrade (2021)

Nov 15, 2025 by Alex Braham 44 views

Let's dive into the world of upgrading the exhaust system on a 2021 Lexus RC 350 F Sport. For car enthusiasts, the exhaust system is more than just a way to expel fumes; it's a crucial component that affects performance, sound, and overall driving experience. If you're considering an exhaust upgrade for your RC 350 F Sport, you've come to the right place. We'll cover everything from why you might want an upgrade to what options are available.

Why Upgrade Your Lexus RC 350 F Sport Exhaust?

Upgrading your Lexus RC 350 F Sport's exhaust system can bring several benefits that enhance your driving pleasure. Here's a detailed look at why you might consider this modification:

Enhanced Performance: The stock exhaust system on many vehicles, including the RC 350 F Sport, is designed with restrictions to meet emissions standards and noise regulations. An aftermarket exhaust system is often engineered to be less restrictive, allowing the engine to breathe more freely. This can result in noticeable gains in horsepower and torque, particularly in the mid to high RPM range. By reducing backpressure, the engine can expel exhaust gases more efficiently, leading to improved combustion and power output. For those who enjoy spirited driving, this performance boost can make a significant difference.
Improved Sound: One of the most common reasons people upgrade their exhaust is for the sound. The stock exhaust on the RC 350 F Sport is relatively quiet, which might be suitable for daily commuting but lacks the sporty growl that many enthusiasts crave. An aftermarket exhaust can provide a deeper, more aggressive exhaust note that enhances the auditory experience of driving. Different exhaust systems offer varying levels of sound enhancement, from mild to aggressive, so you can choose one that matches your personal preference. The sound can transform the driving experience, making it more engaging and exciting.
Aesthetic Appeal: Beyond performance and sound, an upgraded exhaust system can also improve the visual appeal of your RC 350 F Sport. Many aftermarket exhausts feature polished stainless steel or titanium tips that add a touch of style to the rear of the car. These tips can come in various shapes and sizes, allowing you to customize the look to your liking. An aesthetically pleasing exhaust system can complement the overall design of the car and make it stand out from the crowd.
Weight Reduction: Some aftermarket exhaust systems are made from lighter materials, such as stainless steel or titanium, compared to the stock system. This can result in a small but noticeable reduction in overall vehicle weight, which can improve handling and acceleration. While the weight savings might not be dramatic, every little bit helps when it comes to performance.
Personalization: Upgrading your exhaust system is a great way to personalize your RC 350 F Sport and make it truly your own. With a wide variety of brands, styles, and materials available, you can choose an exhaust that reflects your individual taste and preferences. Whether you're looking for a subtle enhancement or a bold statement, there's an exhaust system out there that's perfect for you. This personalization can enhance your connection with your car and make it a more enjoyable ownership experience.

In summary, upgrading your Lexus RC 350 F Sport's exhaust system offers a range of benefits, including enhanced performance, improved sound, aesthetic appeal, weight reduction, and personalization. By carefully considering your goals and preferences, you can choose an exhaust system that transforms your driving experience and makes your car stand out from the rest.

Types of Exhaust Systems for the 2021 Lexus RC 350 F Sport

When it comes to upgrading the exhaust system on your 2021 Lexus RC 350 F Sport, you'll find several different types to choose from. Each type offers unique characteristics in terms of sound, performance, and price. Here's an overview of the most common options:

Axle-Back Exhaust Systems: Axle-back systems are the most straightforward and cost-effective option for upgrading your exhaust. These systems replace the exhaust components from the rear axle to the exhaust tips, typically including the muffler. Axle-back exhausts primarily focus on improving the sound of your car, providing a more aggressive and sporty tone. While they may offer a slight performance improvement, the primary benefit is the enhanced auditory experience. Installation is usually simple, often requiring only basic tools and mechanical knowledge.
Cat-Back Exhaust Systems: Cat-back exhaust systems replace the entire exhaust system from the catalytic converters to the exhaust tips. This includes the mid-pipe and muffler, offering a more comprehensive upgrade compared to axle-back systems. Cat-back exhausts provide a better balance of performance and sound enhancement. By replacing more of the exhaust system, they can reduce backpressure and improve exhaust flow, resulting in noticeable gains in horsepower and torque. The sound is also typically more aggressive than with axle-back systems. Installation is more involved but can still be done by experienced DIYers or professional mechanics.
Header-Back Exhaust Systems: Header-back exhaust systems, also known as turbo-back systems for turbocharged vehicles, replace the entire exhaust system from the exhaust manifold (headers) to the exhaust tips. This is the most comprehensive and performance-oriented exhaust upgrade option. Header-back exhausts offer the greatest potential for increasing horsepower and torque, as they eliminate almost all restrictions in the exhaust system. They also provide the most aggressive and sporty exhaust note. However, installation is the most complex and often requires professional installation. Additionally, header-back systems may not be legal in all areas due to emissions regulations.
Muffler Delete: A muffler delete involves removing the stock muffler and replacing it with a straight pipe. This is the most aggressive and loudest exhaust modification you can make. Muffler deletes significantly amplify the exhaust note, providing a raw and unfiltered sound. However, they offer minimal performance gains and can be excessively loud for some people's tastes. Muffler deletes may also not be legal in all areas due to noise regulations. Installation is relatively simple but may require welding.
Custom Exhaust Systems: For those who want a truly unique exhaust setup, a custom exhaust system is the way to go. Custom exhausts are designed and fabricated specifically for your car, allowing you to tailor the sound, performance, and appearance to your exact preferences. Custom exhaust systems offer the ultimate in personalization but can be more expensive and time-consuming than off-the-shelf options. You'll need to work with a skilled exhaust fabricator to design and build the system to your specifications.

When choosing an exhaust system for your 2021 Lexus RC 350 F Sport, consider your goals, budget, and local regulations. Axle-back systems are a great option for those primarily seeking improved sound, while cat-back and header-back systems offer a better balance of performance and sound enhancement. Muffler deletes are the most aggressive option, but may not be suitable for everyone. Custom exhaust systems provide the ultimate in personalization but can be more expensive. By carefully evaluating your options, you can choose an exhaust system that perfectly matches your needs and preferences.

Top Exhaust System Brands for the Lexus RC 350 F Sport

When you're ready to upgrade the exhaust system on your 2021 Lexus RC 350 F Sport, you'll find a variety of brands offering high-quality options. Each brand has its own unique approach to design, materials, and sound, so it's important to research and choose a brand that aligns with your preferences. Here are some of the top exhaust system brands for the Lexus RC 350 F Sport:

Borla: Borla is a well-known and respected brand in the aftermarket exhaust industry, known for its high-quality materials, precision engineering, and distinctive sound. Borla offers a range of exhaust systems for the Lexus RC 350 F Sport, including axle-back and cat-back systems. Borla exhausts are typically made from T-304 stainless steel, which offers excellent durability and corrosion resistance. They are designed to provide a noticeable improvement in sound and performance, with a focus on a sporty and refined exhaust note. Borla exhausts are a popular choice among Lexus enthusiasts who want a premium exhaust system that delivers both performance and style.
Invidia: Invidia is another reputable brand that specializes in high-performance exhaust systems. Invidia exhausts are known for their aggressive sound, high-flow design, and durable construction. Invidia offers a variety of exhaust systems for the Lexus RC 350 F Sport, including cat-back and header-back systems. These exhausts are designed to maximize horsepower and torque, with a focus on providing a raw and unfiltered exhaust note. Invidia exhausts are a popular choice among enthusiasts who want a performance-oriented exhaust system that makes a statement.
MagnaFlow: MagnaFlow is a popular brand that offers a wide range of exhaust systems for various vehicles, including the Lexus RC 350 F Sport. MagnaFlow exhausts are known for their smooth and deep sound, high-flow design, and durable construction. MagnaFlow offers both axle-back and cat-back systems for the RC 350 F Sport, providing options for different levels of sound and performance enhancement. These exhausts are designed to improve exhaust flow and reduce backpressure, resulting in gains in horsepower and torque. MagnaFlow exhausts are a versatile choice that appeals to a wide range of enthusiasts.
AWE Tuning: AWE Tuning is a premium brand that specializes in high-performance exhaust systems and other aftermarket components. AWE Tuning exhausts are known for their exceptional quality, innovative design, and refined sound. AWE Tuning offers cat-back exhaust systems for the Lexus RC 350 F Sport, featuring their signature resonated and non-resonated designs. These exhausts are designed to provide a significant improvement in sound and performance, with a focus on a sporty and sophisticated exhaust note. AWE Tuning exhausts are a top choice among enthusiasts who want the best of the best.
Remark: Remark offers a range of exhaust systems known for their balance of performance, sound, and affordability. They provide options like axle-back exhausts specifically designed for the RC 350 F Sport. These systems are often favored by those looking for an enhanced exhaust note without a significant investment, making them a practical upgrade for daily drivers. Remark exhausts aim to deliver a sporty sound and improved exhaust flow, enhancing the overall driving experience without breaking the bank.

When choosing an exhaust system brand for your Lexus RC 350 F Sport, consider your budget, performance goals, and desired sound. Research different brands, read reviews, and listen to sound clips to get a better idea of what each brand offers. By carefully evaluating your options, you can choose an exhaust system that perfectly matches your needs and preferences.

Installation Tips and Considerations

So, you've picked out your dream exhaust system for your 2021 Lexus RC 350 F Sport. Now what? Getting it installed correctly is key to enjoying all those benefits we talked about. Here are some tips and things to keep in mind during the installation process:

Professional Installation vs. DIY: One of the first decisions you'll need to make is whether to install the exhaust system yourself or have it done by a professional. If you're experienced with automotive repair and have the necessary tools, you may be able to tackle the installation yourself. However, if you're not comfortable working on cars or don't have the right tools, it's best to leave it to the professionals. Professional installation ensures that the exhaust system is installed correctly and safely, and it can also save you time and hassle. Plus, if anything goes wrong, you'll have someone to turn to for assistance.
Tools and Equipment: If you decide to install the exhaust system yourself, make sure you have all the necessary tools and equipment. This may include a socket set, wrenches, a torque wrench, a jack and jack stands, and penetrating oil. Having the right tools will make the installation process much easier and more efficient. It's also a good idea to have a friend or family member help you, as some steps may require two people.
Read the Instructions: Before you start the installation process, take the time to read the instructions carefully. The instructions will provide step-by-step guidance on how to install the exhaust system correctly. Pay attention to any specific torque specifications or warnings, and follow the instructions closely. If you're unsure about any step, don't hesitate to ask for help from a professional.
Check for Leaks: Once the exhaust system is installed, it's important to check for leaks. Start the engine and listen for any unusual noises or hissing sounds. You can also use a soapy water solution to check for leaks at the connections. If you find any leaks, tighten the connections or replace any damaged gaskets.
Allow for Break-In Period: After installing the new exhaust system, it's a good idea to allow for a break-in period. This will give the exhaust system time to settle and allow the materials to expand and contract. During the break-in period, you may notice some changes in the sound of the exhaust, but this is normal. Avoid aggressive driving during this period to ensure that the exhaust system breaks in properly.

By following these installation tips and considerations, you can ensure that your new exhaust system is installed correctly and safely, and that you can enjoy all the benefits it has to offer. Whether you choose to install it yourself or have it done by a professional, taking the time to do it right will pay off in the long run.

Maintaining Your Upgraded Exhaust System

So, you've upgraded your 2021 Lexus RC 350 F Sport with a shiny new exhaust system. Awesome! But don't think the job is done just yet. To keep that exhaust sounding great and performing its best, you'll need to put in a little effort with regular maintenance. Trust me, it's worth it. Here’s how to keep your exhaust system in tip-top shape:

Regular Inspections: One of the best ways to maintain your upgraded exhaust system is to perform regular inspections. Check the exhaust system for any signs of damage, such as cracks, dents, or rust. Also, check the connections for any leaks or loose bolts. Regular inspections will help you catch any problems early before they become more serious.
Cleaning: Over time, the exhaust system can accumulate dirt, grime, and road salt. This can not only make the exhaust system look unsightly, but it can also accelerate corrosion. To prevent this, clean the exhaust system regularly with a mild soap and water solution. Avoid using harsh chemicals or abrasive cleaners, as these can damage the finish.
Polishing: If your exhaust system has stainless steel or polished tips, you can keep them looking their best by polishing them regularly. Use a metal polish specifically designed for stainless steel or chrome, and follow the instructions on the product label. Polishing will remove any oxidation or discoloration and restore the shine.
Tightening Connections: Over time, the connections on the exhaust system can loosen due to vibrations and temperature changes. Periodically check the connections and tighten any loose bolts or clamps. This will help prevent leaks and ensure that the exhaust system is properly sealed.
Avoid Harsh Driving Conditions: Harsh driving conditions, such as off-roading or driving through deep water, can damage the exhaust system. Avoid these conditions whenever possible, and take extra care when driving in inclement weather. If you do drive in harsh conditions, be sure to inspect the exhaust system afterwards for any damage.

By following these maintenance tips, you can keep your upgraded exhaust system looking and sounding great for years to come. Regular maintenance will not only prolong the life of the exhaust system, but it will also ensure that it continues to perform at its best. So, take a little time to care for your exhaust system, and it will reward you with years of driving pleasure.

Conclusion

Upgrading the exhaust system on your 2021 Lexus RC 350 F Sport is a fantastic way to enhance its performance, sound, and overall driving experience. Whether you're looking for a mild improvement or a complete transformation, there's an exhaust system out there that's perfect for you. By carefully considering your goals, budget, and local regulations, you can choose an exhaust system that perfectly matches your needs and preferences. Remember to research different brands, consider professional installation, and perform regular maintenance to keep your exhaust system in top condition. With the right exhaust system, your Lexus RC 350 F Sport will not only turn heads but also deliver an exhilarating driving experience every time you hit the road. So go ahead, explore your options, and get ready to unleash the true potential of your RC 350 F Sport!