How to Choose the Best Subaru Performance Parts

You know your Subaru has more potential than its stock setup allows. Whether you’re craving more power for the track or rugged durability for an off-road adventure, the aftermarket world can be overwhelming. This guide is designed to cut through the noise. We’ll walk you through the essentials of choosing quality Subaru performance parts, from understanding the difference between OEM and aftermarket to creating a smart upgrade plan. You'll learn how to select components that work together, avoid common myths, and find parts that deliver real results for your WRX, Crosstrek, or STI.

Key Takeaways

• Create a Cohesive Build Plan: Define your primary goal—whether for the track, trail, or street—and choose parts that work together as a system. This strategic approach ensures every upgrade contributes to a balanced, high-performing vehicle.
• Choose Quality Parts with Confidence: High-quality aftermarket components from reputable brands are designed to meet or exceed OEM standards and won't automatically void your car's warranty. Investing in proven parts ensures reliable performance and protects your vehicle.
• Do Your Homework Before Clicking 'Buy': The best online shopping experiences come from careful research. Always confirm a part is compatible with your exact model and year, read customer reviews, and understand the seller’s warranty and return policies to make a smart, regret-free purchase.

Why Buy Subaru Performance Parts Online?

When you’re ready to get more out of your Subaru, shopping for performance parts online is the best way to find exactly what you need. Online stores give you access to a massive selection of upgrades from specialized brands, often with better pricing and more information than you’d find locally. It’s the most direct route to transforming your vehicle, whether you’re building a track-ready STI or a capable Crosstrek for overlanding. But before you start adding parts to your cart, it’s helpful to understand what you’re buying and why an online specialist is your best bet.

Performance vs. OEM: What's the Real Difference?

First, let’s clear up the terms. OEM (Original Equipment Manufacturer) parts are the factory components your Subaru was built with. They’re designed for reliability and general use. Performance parts, on the other hand, are aftermarket upgrades engineered to push your vehicle beyond its stock capabilities—think more horsepower, sharper handling, or better off-road durability. A common worry is that installing non-OEM parts will void your car’s warranty, but that’s not always true. As long as an aftermarket part doesn’t cause a failure, your warranty coverage should remain intact. The key is to choose high-quality, Subaru-specific parts that are designed with your vehicle’s precise engineering in mind, as generic "universal fit" parts often lead to installation headaches and poor results.

The Advantages of Shopping for Parts Online

Shopping online for performance parts offers some major advantages. The biggest is convenience. Reputable websites let you filter by your car's year and model, so you can be confident the parts you’re buying will actually fit your Subaru WRX or Forester. This takes the guesswork out of the equation. You also get access to a much wider selection from experts who live and breathe Subaru performance. Brands like Crawford Performance design and test their parts in real-world racing conditions, ensuring you’re getting reliable, track-proven upgrades. Finally, the checkout process is typically seamless, with multiple secure payment options that make completing your purchase simple and safe.

Where to Buy Subaru Performance Parts

Once you’ve decided on the upgrades for your Subaru, the next big question is where to buy them. The internet is full of options, but finding a truly reliable supplier is key to a successful build. The right retailer does more than just ship a box; they offer high-quality parts that fit perfectly, perform as advertised, and come with solid customer support. When you’re investing in your car, you want to buy from people who understand the platform and can stand behind their products with a good warranty and expert advice. A well-designed online store also makes a huge difference, letting you easily find parts compatible with your specific WRX, Crosstrek, or Forester.

To help you get started, I’ve compiled a list of the most trusted names in the Subaru performance world. These companies are known throughout the community for their quality products and deep understanding of what makes these cars tick. Whether you’re building a track monster or outfitting your rig with rugged overlanding solutions, these are the suppliers you can count on. They have earned their reputations by consistently delivering parts that help Subaru owners achieve their performance goals.

Crawford Performance

Here at Crawford Performance, we live and breathe Subaru. Our parts are engineered and track-tested by experts with decades of motorsport experience, including building engines for Ken Block’s iconic Gymkhana cars. We are the only aftermarket company whose parts are trusted and used by Subaru of America—a testament to our commitment to quality and reliability. We offer a huge range of performance parts for nearly every modern Subaru, from the WRX and STI to the Crosstrek and Forester. Plus, all our parts come with a 1-year, unlimited-mileage warranty, giving you total confidence in your upgrades.

GrimmSpeed

GrimmSpeed is a well-known name in the Subaru community, specializing in high-quality aftermarket parts for models like the WRX, STI, and BRZ. They offer an extensive catalog that covers everything from engine and exhaust components to aesthetic and chassis upgrades. Their website is particularly user-friendly, allowing you to filter parts by your specific vehicle model to ensure you’re only looking at components that fit your car. This makes the shopping experience straightforward and helps you find exactly what you need without the guesswork.

Wide Product Selection and Filtering

One of the biggest perks of shopping with a dedicated online retailer is the ability to find exactly what you need without any guesswork. Reputable websites let you filter by your car's year and model, so you can be confident the parts you’re buying will actually fit your Subaru WRX or Forester. This is crucial for avoiding installation headaches down the road. Beyond just fitment, you also get access to a much wider selection of components from experts who live and breathe Subaru performance, offering specialized upgrades for everything from track-focused builds to rugged overlanding rigs.

Shipping Incentives

Beyond the parts themselves, a smooth checkout and delivery process is a hallmark of a great online store. Many top-tier suppliers offer shipping incentives to make your purchase even easier. For example, it’s common to find offers like free shipping on orders over a certain amount, such as $150.00, which can save you a significant amount of money on heavier components. Additionally, look for retailers who are transparent about their fulfillment times. Knowing that most parts usually ship within 24 to 72 hours gives you a clear timeline for when you can expect your upgrades and start your project.

Subaru Online Parts

If you prefer to stick with factory-backed components, Subaru Online Parts is your destination for genuine Subaru Performance Tuning (SPT) parts and accessories. While their selection includes standard OEM replacement parts, they also offer a dedicated performance category. Buying genuine parts guarantees perfect fitment and the quality you’d expect directly from Subaru. It’s a reliable choice for enthusiasts who want to maintain an OEM-plus feel for their vehicle while adding a bit of factory-approved performance.

COBB Tuning

COBB Tuning is famous for its Accessport and comprehensive tuning solutions that transform how a Subaru drives. They’ve built an entire ecosystem of parts designed to work together seamlessly, from intakes and downpipes to full exhaust systems. This integrated approach makes them a go-to for owners who want a proven, step-by-step upgrade path. If you’re focused on dialing in your engine’s performance and want a solution that’s both powerful and reliable, COBB is one of the top names in the business.

Perrin Performance

Perrin Performance is another major player in the Subaru aftermarket world, offering a wide array of upgrades that improve both power and handling. Their product lineup is extensive, featuring everything from cold air intakes and exhaust systems to suspension components and engine dress-up parts. Known for their distinctive designs and solid engineering, Perrin provides reliable options for enthusiasts looking to enhance their vehicle’s capabilities across the board. They are a popular and trusted choice for many Subaru owners.

IAG Performance

High-Performance Engine Components

If you're planning a serious engine build, IAG Performance is a name you'll encounter frequently. Based in Maryland, they have earned a strong reputation for manufacturing and selling high-performance engine components for a wide range of Subaru models, including the WRX, STI, Forester XT, and BRZ. Their catalog is extensive, covering everything from short blocks and heads to drivetrain parts and suspension upgrades. For enthusiasts looking to build a reliable, high-horsepower engine, IAG is often a top choice because they offer meticulously engineered parts designed to handle significant power increases. They are a go-to source for foundational components that form the heart of a performance-oriented build.

Installation Services and Educational Resources

What sets IAG Performance apart is that they offer more than just parts. They also provide professional installation services and a wealth of educational resources on their website. This approach helps Subaru owners make more informed decisions about their upgrades, ensuring that every component works together to achieve the desired performance goals. By offering expert guidance alongside their products, they position themselves as a comprehensive resource for the community. This commitment to customer education and support makes them a trusted partner for both seasoned builders and those who are just starting to modify their vehicles, helping to demystify the process of building a high-performance Subaru.

Nameless Performance

Specialization in Exhaust Systems

For many enthusiasts, the sound of their Subaru is just as important as its performance. Nameless Performance has built its brand around this idea, specializing in high-quality exhaust systems that deliver an aggressive tone and improved horsepower. They are particularly known for their muffler deletes and axle-back exhausts, which are popular choices for owners of the WRX, STI, and Crosstrek looking for that signature boxer rumble. Their products are engineered to enhance performance, improve throttle response, and give your car a distinct personality. If upgrading your exhaust is high on your priority list, Nameless Performance offers a variety of well-crafted options designed specifically for the Subaru platform.

Key Performance Upgrades for Your Subaru

Once you decide to modify your Subaru, the sheer number of options can feel overwhelming. Where do you even start? The best approach is to think about what you want to achieve. Are you looking for more power for track days, better handling for winding roads, or rugged durability for off-road adventures? Focusing on your goal will help you choose the right parts. Let's break down some of the most impactful upgrades you can make to your vehicle, from the engine block to the suspension.

Engine Upgrades

The engine is the heart of your Subaru, and it’s often the first place enthusiasts look to gain more power. Upgrading core components can deliver significant gains in horsepower and torque, completely changing how your car feels on the road. This can range from simple bolt-on parts to comprehensive internal builds. At Crawford Performance, we specialize in track-tested engine components designed to push the limits of Subaru models like the WRX, STI, and BRZ. Whether you're aiming for a reliable daily driver with a bit more punch or a full-blown track machine, the right engine upgrades provide the foundation for all other performance modifications.

Suspension and Handling

Power isn't everything if you can't control it. Upgrading your suspension is crucial for improving how your Subaru handles corners, absorbs bumps, and feels connected to the road. Performance springs, coilovers, and sway bars can lower your car’s center of gravity, reduce body roll, and provide a more stable, responsive ride. For example, many owners find that installing performance springs offers a great balance between improved handling and daily comfort. These modifications are essential whether you're carving up a canyon road or looking for more stability during a high-performance track day.

Exhaust and Turbo Systems

If you want to improve your engine’s efficiency while adding that signature Subaru rumble, an upgraded exhaust system is the way to go. A high-flow exhaust allows your engine to breathe better, which can lead to noticeable power gains. Pairing it with a turbo upgrade takes things to the next level, forcing more air into the engine for a dramatic increase in performance. Companies across the industry engineer systems specifically for Subaru models, focusing on both sound and power. These WRX upgrades are popular because they enhance the driving experience on multiple sensory levels.

Overlanding and Off-Road Mods

Subarus aren't just for the street; models like the Crosstrek and Forester are incredibly capable off-road. Equipping your vehicle for adventure requires a different set of priorities. Instead of focusing on speed, you’ll want parts that add durability, ground clearance, and utility. Our overlanding solutions are born from our motorsports experience and work with Subaru of America, ensuring they can handle the toughest trails. Upgrades like lift kits, skid plates, and air-oil separators protect your vehicle and give you the confidence to explore far off the beaten path.

Genuine vs. Aftermarket: Which Is Right for You?

When you start modifying your Subaru, one of the first decisions you’ll face is whether to stick with genuine OEM parts or explore the world of aftermarket upgrades. It’s a fundamental choice that sets the direction for your entire build. Genuine parts, or Original Equipment Manufacturer (OEM) parts, are the same components your car was built with at the factory. They are a reliable choice for standard repairs, guaranteeing a perfect fit and restoring your vehicle to its original condition. But if you're reading this, you're probably not interested in just maintaining the status quo. You want more.

This is where aftermarket parts come in. These components are engineered by specialized companies to push your vehicle's power, handling, and durability far beyond its stock design. Choosing between OEM and aftermarket isn't just about price—it's about defining your goals for your car. Are you building a track-ready Subaru STI that carves corners with precision? Or are you outfitting a Crosstrek with rugged overlanding solutions for your next adventure? Understanding the key differences in fitment, warranties, and performance gains will help you make the right call. The best choice depends entirely on what you want to achieve with your Subaru.

A Closer Look at Quality and Fitment

Subaru engineers its vehicles with incredibly precise tolerances, and a part that’s even a millimeter off can cause issues. This is where the debate over quality and fitment gets interesting. While genuine parts guarantee a perfect factory fit, they are only designed to restore original performance, not improve it. Many generic, universal-fit aftermarket parts can cause installation headaches and may not integrate cleanly with your Subaru’s systems.

However, high-quality, vehicle-specific performance parts are a different story. Brands that specialize in Subaru, like Crawford Performance, design components that meet or exceed OEM quality standards. Our parts are developed by engineers who live and breathe Subaru, ensuring every piece fits perfectly and functions flawlessly to deliver a true performance upgrade. You get the reliability of a perfect fit with the added benefit of enhanced capability.

Will Aftermarket Parts Affect Your Warranty?

One of the biggest myths in the tuning world is that installing an aftermarket part will automatically void your car's factory warranty. That’s simply not true. Legally, a manufacturer has to prove that the specific aftermarket part you installed was the direct cause of a mechanical failure. Simply having an upgraded air-oil separator or exhaust system doesn't give a dealer grounds to deny a warranty claim on your transmission.

Beyond the factory warranty, you should also consider the warranty on the parts themselves. Reputable manufacturers stand behind their products. For example, we offer a 12-month/12,000-mile warranty on our custom-built engines because we are confident in our engineering and craftsmanship. When you choose parts from a trusted source, you’re not just buying performance; you’re buying peace of mind backed by a solid guarantee.

Performance vs. Price: Finding the Sweet Spot

This is where you get to define the personality of your car. OEM parts will keep your Subaru running like it did the day it left the showroom, but they won’t make it faster, handle better, or stand out from the crowd. Aftermarket upgrades are your ticket to personalization and enhanced capability. Whether you’re chasing more power in your Subaru WRX or equipping your Forester for rugged adventures, the right parts transform your vehicle.

While cost is always a factor, it’s important to think in terms of value. A cheap, poorly designed part might save you money upfront, but it could fail prematurely or even damage other components, costing you more in the long run. Investing in well-engineered parts from a trusted brand ensures you get the reliable performance gains you’re paying for. It’s about making a smart investment in your vehicle’s performance and longevity.

How to Choose the Right Performance Parts

Once you start exploring the world of performance upgrades, it’s easy to get overwhelmed by the sheer number of options. Making the right choice isn't just about picking the part with the best specs; it's about finding what works for your specific car and your unique goals. A thoughtful approach ensures you get the power, handling, and reliability you're looking for without wasting time or money. A mismatched part isn't just an inconvenience—it can lead to poor performance or even damage other components. Likewise, buying upgrades without a clear vision can result in a car that feels disjointed, with powerful engine mods that overpower the stock suspension and brakes.

Before you add anything to your cart, take a step back and consider a few key factors. The journey to building your ideal Subaru is a marathon, not a sprint. Thinking about compatibility, your long-term vision for the build, and your installation plan will help you make smart, effective decisions that bring your dream Subaru to life. This foundational planning prevents costly mistakes and ensures that every new part you install is a step in the right direction. Whether you're aiming for a subtle increase in daily driving fun or a full-blown track build, a clear strategy is your most valuable tool. It helps you allocate your budget effectively and build a vehicle where every component works in harmony.

Will This Part Fit Your Subaru?

The first rule of buying performance parts is to confirm they fit your vehicle. Subaru engineers its cars with incredibly precise tolerances, and a part designed for a 2022 WRX might not work on a 2015 model. Always check that the part you’re buying is made specifically for your car’s year and model. Using model-specific Subaru Crosstrek upgrades, for example, guarantees a clean installation and the performance gains you expect. Generic or "universal fit" parts often lead to installation headaches and can even compromise your vehicle's performance and safety. Don't rely on looks alone; verify the part numbers and model years before you buy.

Planning Your Upgrades Step-by-Step

To get real, noticeable results, you need a cohesive build plan. Simply adding parts at random won't cut it. The most effective upgrades come from selecting components that work together as a system. Start by defining your primary goal. Are you building a track-day monster, a daily driver with a bit more punch, or a capable overlanding rig? Once you know your objective, you can prioritize your purchases. For instance, if improved handling is your goal, you might start with coilovers and sway bars before moving on to engine mods. A strategic plan ensures every dollar you spend contributes to a better, more balanced driving experience.

Should You DIY or Hire a Pro?

Next, decide whether you’ll install the parts yourself or hire a professional. Many Subaru enthusiasts love the satisfaction of working on their own cars, and plenty of upgrades can be done in a home garage with the right tools. However, some jobs, like engine builds or complex electronic tuning, are best left to experienced technicians. Be honest about your mechanical skill level, the tools you have available, and how much time you can commit. For something like an Air/Oil Separator, a confident DIYer can handle the job, but for a full engine tuning service, professional expertise is the way to go to ensure everything runs perfectly.

Subaru Performance Parts: Myths vs. Reality

Upgrading your Subaru is an exciting process, but it’s easy to get sidetracked by misinformation. Let's clear the air on a few common myths that might be holding you back from building the car you really want. Understanding the facts will help you make confident decisions about which performance parts are right for you and your vehicle.

Will Upgrades Really Void Your Warranty?

One of the biggest fears for any new Subaru owner is that installing a single aftermarket part will instantly void their factory warranty. This is largely untrue. In the United States, the Magnuson-Moss Warranty Act protects consumers by stating that a dealer must prove an aftermarket part directly caused a specific failure to deny a warranty claim. Simply having a performance exhaust or an upgraded air-oil separator installed doesn't automatically void your entire engine coverage. The key is to use high-quality, well-engineered parts from reputable brands that are designed to work seamlessly with your vehicle's systems.

Are All Aftermarket Parts Low Quality?

The term "aftermarket" covers a huge range of products, from cheap knock-offs to premium, race-proven components. It's a mistake to lump them all together. While low-quality options exist, specialized manufacturers design parts that often exceed the specifications of original equipment for a specific purpose. Whether you're looking for better track performance from your Subaru STI or more durability for your overlanding Crosstrek, the right aftermarket parts are engineered for superior strength, lighter weight, or improved efficiency. They are designed to help you achieve specific performance goals that factory parts can't.

Is Installation as Hard as It Seems?

Many enthusiasts believe that installing performance parts requires a professional mechanic and a fully equipped garage. While some complex jobs, like an engine build, are best left to the experts, many popular upgrades are surprisingly straightforward. Parts like air-oil separators, bolt-on exhaust systems, and suspension components can often be installed with basic hand tools and a good set of instructions. Many companies provide detailed installation guides or video tutorials to walk you through the process. If you're ever in doubt, you can always consult with a professional or use expert engine tuning services to ensure everything is dialed in perfectly.

How to Save Money on Subaru Performance Parts

Upgrading your Subaru is an investment, but it doesn’t have to drain your bank account. Finding the best deal isn't just about snagging the lowest price—it's about getting high-quality, reliable parts that give you the performance you want without future headaches. A little strategic shopping can help you get more power and capability for your money. By keeping an eye on sales, comparing your options, and understanding what you’re getting with your purchase, you can build your dream ride smartly and affordably. Whether you're planning a full engine overhaul or just starting with a few simple mods, these tips will help you find the best value on performance parts for your Subaru.

Timing Your Purchase: Sales and Promotions

One of the easiest ways to save money is to watch for sales events and special promotions. Many online retailers offer discounts during major holidays like Black Friday or throughout the year. A great way to stay in the loop is by subscribing to the email newsletters of your favorite parts manufacturers and following them on social media. This way, you’ll be the first to know when a sale drops. Some retailers even offer discounts on specific items year-round, which can lead to significant savings on everything from exhaust systems to suspension kits. Planning your purchases around these events can make a big difference in your total build cost.

Shop Smart: Compare Prices and Join Programs

Before you click "buy," take a few minutes to compare prices from different retailers. The same part can have different price tags depending on where you shop. While you're comparing, check to see if the company offers a loyalty or rewards program. These programs are designed to reward repeat customers with points, exclusive discounts, or early access to new products. Over time, the savings can really add up, especially if you plan on making multiple upgrades. Choosing a trusted supplier for your Subaru WRX upgrades and sticking with them can pay off in the long run through these kinds of programs.

What to Look for in Return Policies and Warranties

A great price isn't so great if the part fails and you have no recourse. Always check the return policy and warranty before making a purchase. A strong warranty is a sign that the manufacturer stands behind its products. For example, at Crawford Performance, all our performance parts come with a 1-year unlimited mileage warranty, giving you peace of mind that you’re covered. A clear and fair return policy is also important in case you order the wrong part or it doesn’t fit as expected. Reading the fine print ensures that a good deal today doesn't become a costly problem tomorrow.

Your Online Buying Checklist

Shopping for performance parts online opens up a world of possibilities for your Subaru, but it’s smart to have a game plan before you click "buy." When you shop for aftermarket parts, you're not just picking upgrades—you're choosing how your car will feel, perform, and even how it looks. It's an exciting process, but it's also one where a little extra research goes a long way. The difference between a successful, satisfying upgrade and a frustrating weekend in the garage often comes down to the details you check beforehand. From verifying fitment to understanding how a new component will interact with your existing setup, taking the time to be thorough is key. This is especially true for Subarus, where the synergy between parts is crucial for achieving reliable power and handling. A mismatched part can not only fail to deliver the promised gains but can also negatively affect other systems in your vehicle. To help you make confident, informed decisions for your build, I've put together a few final tips to keep in mind. These pointers will help you avoid common pitfalls and ensure you get the right parts for your car every time, turning your vision into a reality without the unnecessary headaches.

Don't Skip the Fine Print: Read Specs and Reviews

Every part you add changes how your car feels and performs, so getting the details right is essential. Subaru vehicles are engineered with precise tolerances, which means generic, "universal fit" parts often lead to installation headaches and poor performance. Always confirm that a part is designed specifically for your model and year. Dig into the product specifications to understand the materials, expected performance gains, and any other components required for installation. Customer reviews are your best friend here—look for feedback from other owners with the same Subaru model to see how the part performed for them in the real world.

When Should You Consult an Expert?

You don’t have to be a master mechanic to upgrade your car, but it’s wise to know your limits. If you’re unsure about compatibility, the installation process, or how a part will interact with your existing mods, don’t hesitate to ask for help. Reputable shops have knowledgeable customer service teams who can answer your questions and guide you toward the right choice for your goals. For more complex jobs like engine builds or tuning, connecting with a professional is a must. Expert engine tuning services can ensure your new parts work together safely and efficiently to deliver the power you're looking for.

Avoid These Common Buying Mistakes

Two common pitfalls can trip up even seasoned enthusiasts: warranty worries and the lure of cheap parts. First, it’s a myth that any aftermarket part will automatically void your car’s warranty. As long as the part doesn’t cause a failure, your warranty should remain intact. Second, avoid the temptation of suspiciously cheap parts. A low-quality component, like a poorly made oil filter or a weak suspension link, can fail and cause significant damage down the line. It’s always better to invest in reliable, track-tested performance parts from a trusted manufacturer than to risk your engine on a bargain-bin find.

Related Articles

• The Ultimate Subaru Performance Shop Guide
• How to Choose the Best Subaru Performance Parts for Your Build

Frequently Asked Questions

What is the best first upgrade I should make to my Subaru? There isn't a single "best" first part, as the right starting point depends entirely on your goals. If you want to improve how your car feels in corners and on winding roads, start with suspension upgrades like sway bars or coilovers. If your main goal is protecting your engine's longevity while adding a foundational performance mod, an Air-Oil Separator is an excellent choice. Define what you want to achieve first, and that will point you to the most impactful initial upgrade for your build.

Will installing a performance part really not void my car's warranty? That's correct, it generally will not. Thanks to consumer protection laws, a manufacturer or dealer has to prove that the specific aftermarket part you installed was the direct cause of a mechanical failure. Simply having a high-quality, professionally installed performance part on your car is not enough grounds to deny a warranty claim on an unrelated issue. Choosing parts from reputable, Subaru-specific brands is the best way to ensure reliability and protect your vehicle.

Do I need to get my car professionally tuned after installing new engine parts? For most parts that change the way your engine breathes, like an intake, downpipe, or turbo upgrade, a professional tune is absolutely essential. These components alter the air-to-fuel ratio, and without a proper tune to adjust the engine's computer, you won't get the performance gains you're paying for. More importantly, an improper tune can cause the engine to run unsafely, leading to potential damage.

Is it okay to mix and match performance parts from different brands? Yes, you can certainly use parts from different manufacturers, and most enthusiasts do. The most important thing is to have a cohesive plan and choose components that are designed to work well together. While some companies create an entire ecosystem of parts for seamless integration, a well-researched combination of high-quality components from various trusted brands can produce fantastic results. The focus should always be on how the parts function as a system.

How can I tell if an online parts store is trustworthy? A trustworthy retailer will show clear signs of expertise and reliability. Look for a company that specializes in Subaru vehicles, as they will have a deeper understanding of the platform. Check for a solid warranty on their products and read customer reviews to gauge real-world experiences. A quality supplier will also provide detailed product specifications and be available to answer your questions, demonstrating that they stand behind what they sell.