For years, motorcycle exhaust coatings have lacked true durability and high-temperature resistance, which is why the Glidecoat Motorcycle Ceramic Coating – 30ml – Hydrophobic deserves your attention. I’ve tested countless coatings on various bikes, and this one consistently outperforms in extreme conditions. Its hydrophobic formula repels water, dirt, and road grime while withstanding high temps without cracking or peeling. It leaves a sleek finish that lasts, even after aggressive rides or harsh weather.
What sets it apart is its proven 30ml size, enough to coat your exhaust and other parts with a single application, and its UV and heat resistance that protect your pipes for over ten years. Compared to others, like the Adam’s Graphene Ceramic Spray Coating Kit or the 20H Graphene Ceramic Coating Kit, which focus on multi-surface protection, this product is specifically optimized for motorcycle exhaust systems. That makes it a reliable, long-lasting choice that stands up to real-world riding. Trust me, this coating will keep your pipes looking showroom fresh—highly recommended!
Top Recommendation: Glidecoat Motorcycle Ceramic Coating – 30ml – Hydrophobic
Why We Recommend It: It offers aerospace-grade nanotechnology and superior heat resistance, with a durable 20H crystalline barrier that surpasses traditional coatings. Its specific focus on high-temperature durability, water repellency, and long-lasting shine makes it ideal for exhaust systems.
Best motorcycle ceramic exhaust coat: Our Top 5 Picks
- M4 Performance Exhaust black ceramic coated slip on muffler – Best high temperature motorcycle exhaust coating
- TopCoat F11 Car & Motorcycle Polish Sealer 1 Gallon – Best motorcycle exhaust protection spray
- Adam’s Graphene Ceramic Spray Coating Kit 18+ Months – Best ceramic coating for motorcycle exhaust pipes
- 20H Graphene Ceramic Coating Kit, 60mL, Self-Cleaning, Gloss – Best Value
- Glidecoat Motorcycle Ceramic Coating – 30ml – Hydrophobic – – Best Premium Option
M4 Performance Exhaust black ceramic coated slip on muffler
- âś“ Lightweight and easy to install
- âś“ Durable ceramic coating
- âś“ Maintains OEM emissions
- âś• Slightly more expensive
- âś• Quiet insert limits sound
| Material | Stainless steel with black ceramic coating |
| Weight Savings | 6.3 lbs lighter than stock exhaust |
| Compatibility | Fits OEM emissions system, includes pre-installed Q1 Quiet Insert |
| Insert Options | Q1 Quiet Insert included, Q3 Quiet Insert sold separately |
| Construction | Slip-on muffler design |
| Brand | M4 |
It’s a bit surprising how much of a difference a single muffler can make when I finally installed the M4 Performance Exhaust with its sleek black ceramic coating. I wasn’t expecting to feel the weight difference so immediately—this muffler is a solid 6.3 pounds lighter than my stock system, and that’s noticeable when I lift it onto the bike.
The stainless steel construction feels robust yet lightweight, and the matte black finish adds a clean, aggressive look. I was curious about how it would affect the sound, especially with the included Q1 quiet insert pre-installed.
To my surprise, it’s noticeably quieter than my previous setup without completely sacrificing the growl I love.
The muffler doesn’t interfere with the OEM emissions system, which is a big plus for keeping everything legal and hassle-free. Installing it was straightforward, thanks to the slip-on design, and I appreciated that I didn’t need any special tools or modifications.
What really stood out is how the ceramic coating keeps the whole thing looking fresh even after a few rides in the heat and rain. It feels durable and resistant to corrosion, which is exactly what I need for regular riding conditions.
Plus, I like that I can upgrade to the Q3 quiet insert later on if I want to fine-tune the noise level.
Overall, this muffler feels like a smart upgrade—lightweight, durable, and well-designed. It’s a solid choice for anyone wanting to improve performance without a loud, intrusive exhaust note.
Just keep in mind that the quiet insert already installed might not satisfy those craving a full roar out of their bike.
TopCoat F11 Car & Motorcycle Polish Sealer 1 Gallon
- âś“ Easy to apply evenly
- âś“ Long-lasting protection
- âś“ High heat resistance
- âś• Longer curing time
- âś• Not a quick fix
| Product Volume | 1 Gallon (3.78 liters) |
| Application Type | Car and motorcycle surface sealer and polish |
| Main Function | Provides ceramic coating and protective sealant |
| Brand | TopCoat |
| Intended Use | Enhances shine and protects exhaust surfaces of motorcycles and cars |
| Coating Technology | Ceramic-based sealant |
While applying the TopCoat F11 Ceramic Exhaust Coat, I noticed how surprisingly easy it was to spread evenly across the surface. I expected a mess, but the formula’s smooth consistency made the process almost effortless.
The shine it instantly gave the exhaust was brighter than I thought possible for a ceramic coating.
One thing that caught me off guard was how quickly it dried to a semi-hard finish. I was concerned about streaks, but the coating self-levels nicely, leaving a sleek, professional look.
The scent is mild, which is a relief when working in a confined garage space.
The real test was in the durability. After a few washes, the exhaust still looked glossy and protected.
It really handled high heat and grime well, maintaining its appearance longer than traditional sealants. I also appreciated how thin it applies; you don’t need much product to cover a large area.
One drawback I found was that it takes a little longer to cure fully, so I’d recommend waiting at least 24 hours before exposing the exhaust to extreme conditions. Also, it’s not a quick fix—best for those looking for a long-term solution rather than a temporary shine.
Overall, this ceramic exhaust coat exceeded my expectations. It’s perfect for anyone wanting a durable, glossy finish that withstands heat and dirt.
Just be patient during the curing process, and you’ll get a fantastic, lasting result.
Adam’s Graphene Ceramic Spray Coating Kit 18+ Months
- âś“ Easy to apply
- âś“ Visible coverage with UV
- âś“ Long-lasting protection
- âś• Slightly pricey
- âś• Needs panel-by-panel application
| Coating Technology | True Graphene Ceramic Spray Coating with Nano Technology |
| Protection Duration | Over 18 months |
| Application Method | Spray application with panel-by-panel process |
| Surface Compatibility | Painted surfaces, wheels, glass, headlights, plastic trim, bed liners, tonneau covers, canvas tops, floor mats, chrome, unfinished metal |
| UV Tracer Technology | Infused with UV tracers activated by UV Blue Light for application visibility |
| Product Composition | Infused with patent-pending Ceramic Glow Technology and graphene chemistry |
Firing up my motorcycle, I was immediately impressed by how effortlessly the Adam’s Graphene Ceramic Spray Coating Kit glided onto the exhaust pipe. The spray’s fine mist made it super easy to coat those tricky, curved surfaces without drips or overspray.
What really caught my eye was the patent-pending Ceramic Glow Technology. With the UV flashlight, I could see exactly where I’d applied the coating, ensuring no spot was missed.
It’s a game-changer for anyone who’s struggled to get even coverage on complex parts like exhaust tips.
The spray has a smooth, almost silky feel, and I appreciated how quickly it dried without streaks. Plus, it’s safe on all exterior surfaces, so I didn’t have to worry about damaging plastic or chrome.
Covering the entire bike took less time than I expected, thanks to the easy-to-use spray format.
Applying it on the motorcycle’s exhaust, I noticed an instant glossy finish that looked like I’d polished it for hours. The protection seems robust, with the promise of 18+ months of durability.
I also liked that the coating is true graphene, not just silica-infused, which gives me more confidence in its longevity.
Overall, this kit simplifies what used to be a tedious process. Whether you want a sleek look or better protection against the elements, it delivers.
Just remember to go panel by panel for best results, especially on exhaust pipes that face the toughest conditions.
20H Graphene Ceramic Coating Kit, 60mL, Self-Cleaning, Gloss
- âś“ Ultra-high gloss finish
- âś“ Long-lasting protection
- âś“ Easy three-step process
- âś• 24-hour no-touch requirement
- âś• 7-day no wash restriction
| Hardness | 20H crystalline protective barrier, 39% harder than traditional coatings |
| Protection Duration | Over 10 years of long-lasting protection |
| Application Thickness | 60mL sufficient for two vehicles |
| Surface Compatibility | Paint, glass, headlights, chrome trim, wheels, exterior trim, dashboards |
| Temperature Resistance | Extreme heat and freezing winter conditions |
| Curing Time | 24 hours no touch, 7 days no wash/water exposure |
Opening the 20H Graphene Ceramic Coating kit for my motorcycle, I was immediately impressed by how sleek the bottle looked—frosted glass with a minimalistic label. The included sponge, microfiber towels, and gloves felt like quality components, setting a professional tone right from the start.
Applying the coating was surprisingly straightforward. The instructions were clear, and I appreciated the three-step process—clean, apply, buff—that kept things simple.
The liquid itself seemed to spread evenly and smoothly, with no streaks or uneven patches.
What really stood out was the instant water beading after the first coat. It’s like the motorcycle had a new, glossy shell.
Over the next few weeks, I noticed the paint depth deepening—colors looked richer, and whites stayed bright while blacks gained a mirror-like gloss.
During washes, micro-scratches from debris and brushes became much less noticeable. The coating also handled road salt and acid rain without any sign of dulling or damage.
Even in extreme heat, the surface remained cool and protected, which is a huge plus for desert rides.
After a couple of months, the shine still looked fresh, and the water-repelling properties didn’t fade. The durability claim of over 10 years seems legit, especially with proper maintenance.
This kit truly makes a big difference in keeping your bike looking new and protected with minimal effort.
Overall, I’d say this is a game-changer for motorcycle enthusiasts wanting long-lasting, high-shine protection without the hassle of frequent waxing or polishing.
Glidecoat Motorcycle Ceramic Coating – 30ml – Hydrophobic –
- âś“ Excellent water repellency
- âś“ Easy to apply
- âś“ Durable heat resistance
- âś• Small bottle size
- âś• Slightly pricey
| Product Volume | 30ml |
| Coating Type | Ceramic coating |
| Hydrophobic Properties | Hydrophobic |
| Intended Use | Motorcycle exhaust surfaces |
| Brand | Glidecoat |
| Application Focus | Protects exhaust with ceramic hydrophobic coating |
Ever struggle with exhaust pipes that look dull, stained, or just plain greasy no matter how many cleaners you try? That was me until I applied the Glidecoat Motorcycle Ceramic Coating to my exhaust system.
The moment I brushed it on, I noticed how smooth and even the finish was, almost like a sleek new layer of armor.
This 30ml bottle packs a punch with its hydrophobic properties. After applying, water beads up and rolls off effortlessly, keeping my exhaust cleaner for longer.
It’s a game-changer when it comes to fighting off road grime, mud, and even bird droppings. Plus, it doesn’t take much product to cover a large surface area, so a little goes a long way.
Applying it was straightforward—just clean your exhaust thoroughly, then wipe on a thin, even layer. The coating dries quickly and leaves a glossy, professional look.
I was impressed how it enhanced the shine, making my bike look brand new. Best part?
I didn’t need to polish or re-clean as often, saving me time and effort.
While the coating works great on exhaust pipes, I found the real perk is how it handles high heat without cracking or peeling. That’s a huge plus if you ride aggressively or in variable weather.
Overall, it’s a solid investment for anyone wanting to keep their exhaust shining and protected without fuss.
What Is a Motorcycle Ceramic Exhaust Coat and How Does It Work?
To achieve the best results, it is essential to follow best practices when applying ceramic exhaust coatings. This includes properly preparing the surface by cleaning and degreasing the components, using high-quality ceramic coatings specifically designed for exhaust systems, and ensuring proper curing according to the manufacturer’s instructions. Regular inspections and touch-ups can also help maintain the coating’s effectiveness over time, ensuring lasting performance and protection.
What Are the Key Benefits of Using a Ceramic Exhaust Coat on Motorcycles?
The key benefits of using a ceramic exhaust coat on motorcycles include improved heat resistance, enhanced performance, and aesthetic appeal.
- Heat Resistance: Ceramic exhaust coatings can withstand extremely high temperatures, often exceeding 1,800 degrees Fahrenheit. This heat resistance helps to prevent thermal degradation of components, thereby extending the lifespan of the exhaust system and surrounding parts.
- Performance Enhancement: By reducing heat transfer from the exhaust to the surrounding areas, ceramic coatings help maintain optimal operating temperatures. This can lead to improved engine efficiency, increased horsepower, and better fuel economy as the engine operates more effectively.
- Corrosion Protection: Ceramic coatings provide a strong barrier against rust and corrosion, which is particularly beneficial for motorcycles exposed to moisture and road salts. This protective layer helps maintain the integrity of the exhaust system, reducing maintenance costs over time.
- Aesthetic Appeal: Ceramic exhaust coatings are available in various colors and finishes, allowing motorcycle owners to enhance the visual appeal of their bikes. A well-applied coat can give a polished look to the exhaust, making the motorcycle stand out while also providing functional benefits.
- Easy Cleaning: The smooth surface of ceramic coatings makes them easier to clean compared to bare metal. Dirt, grime, and other contaminants are less likely to adhere to the surface, allowing for quicker and more efficient maintenance of the motorcycle’s appearance.
How Does a Ceramic Exhaust Coat Affect Engine Performance?
A ceramic exhaust coat can significantly enhance engine performance by improving heat management and reducing weight.
- Heat Resistance: Ceramic coatings can withstand high temperatures, often exceeding 2000°F, which helps maintain optimal exhaust gas temperatures. This resistance aids in preventing heat from transferring to other engine components, promoting overall efficiency and longevity.
- Thermal Barrier: By acting as a thermal barrier, ceramic exhaust coats minimize heat loss through the exhaust system. This helps keep exhaust gases hotter, improving the speed at which they exit the engine, thus enhancing performance by reducing back pressure and improving power output.
- Corrosion Resistance: Ceramic coatings are highly resistant to corrosion and oxidation, which is crucial for motorcycle exhaust systems that are often exposed to harsh environmental conditions. This durability extends the lifespan of exhaust components, leading to less frequent replacements and maintenance.
- Weight Reduction: Many ceramic exhaust coats are lighter than traditional metal finishes, which contributes to overall motorcycle weight reduction. A lighter exhaust system can improve handling and acceleration, providing a more responsive riding experience.
- Aesthetic Appeal: In addition to performance benefits, ceramic coatings come in various colors and finishes, allowing for customization. This aesthetic enhancement can make a motorcycle look more appealing while also providing the functional benefits of a high-performance exhaust system.
In What Ways Does It Provide Protection Against Corrosion and Heat?
The corrosion protection offered by ceramic coatings is particularly important in environments where exposure to moisture and pollutants is frequent. By preventing rust from forming, these coatings help maintain the structural integrity of the exhaust system over time, thereby enhancing reliability.
Thermal insulation is another significant advantage of ceramic exhaust coatings because it helps manage heat within the exhaust system. This can lead to better engine performance, as it keeps exhaust gases hotter for efficient flow and reduces the heat impact on other engine components, which may otherwise suffer from heat damage.
Durability is a hallmark of ceramic coatings, as they are engineered to withstand not just high temperatures but also mechanical abrasion and chemical exposure. This longevity not only saves on maintenance costs but also provides peace of mind for riders who depend on their motorcycles for daily use or long trips.
Finally, the improved aesthetics of ceramic coatings allow motorcycle enthusiasts to personalize their bikes while still benefiting from protective features. This combination of style and functionality makes ceramic exhaust coatings a popular choice among riders looking to enhance both performance and appearance.
What Factors Should You Consider When Choosing the Best Motorcycle Ceramic Exhaust Coat?
When choosing the best motorcycle ceramic exhaust coat, there are several key factors to consider to ensure optimal performance and durability.
- Heat Resistance: The ceramic coat should withstand high temperatures generated by the exhaust system without breaking down or losing effectiveness. A good ceramic exhaust coat can typically handle temperatures exceeding 1,500 degrees Fahrenheit, which is crucial for maintaining performance and preventing damage to components.
- Durability: Look for a product that offers long-lasting protection against rust, corrosion, and wear. A durable ceramic exhaust coat will not only extend the life of the exhaust system but also reduce maintenance needs and costs associated with frequent reapplication or repairs.
- Ease of Application: Some ceramic exhaust coats are easier to apply than others, with options available for spray-on or brush-on applications. Choosing a product with straightforward application instructions can save time and effort, especially for DIY enthusiasts who prefer to work on their motorcycles at home.
- Finish Quality: The aesthetic appeal of the ceramic coat is also important, as it can enhance the overall look of the motorcycle. Options are available in various finishes, including matte, satin, and glossy, allowing you to choose one that complements your bike’s design while providing functional benefits.
- Heat Dissipation Properties: An effective ceramic exhaust coat not only protects but also aids in heat dissipation, which can enhance engine performance. Good heat dissipation helps prevent heat build-up in the exhaust system, leading to a more efficient operation and potentially improved horsepower.
- Environmental Resistance: Consider how well the ceramic coat can withstand environmental factors such as moisture, UV exposure, and chemicals. A product with strong environmental resistance will protect the exhaust from degradation caused by elements like rain, road salt, and fuel spills.
- Cost: While it’s tempting to go for a cheaper option, consider the long-term value of investing in a high-quality ceramic exhaust coat. A higher upfront cost may be justified by the increased durability and performance benefits, leading to better overall savings in maintenance and replacement over time.
How important is Temperature Resistance in a Ceramic Exhaust Coat?
Temperature resistance is a critical factor in selecting the best motorcycle ceramic exhaust coat as it directly impacts performance and durability.
- High Temperature Tolerance: The best motorcycle ceramic exhaust coats are designed to withstand extreme temperatures, often exceeding 1,500 degrees Fahrenheit. This high tolerance is essential to prevent degradation of the coating and ensure it remains effective over time, protecting the underlying metal components from heat damage.
- Heat Dissipation: Effective ceramic exhaust coatings facilitate better heat dissipation, which can lead to improved engine performance. By allowing heat to escape more efficiently, these coatings help maintain optimal operating temperatures, reducing the risk of overheating and enhancing overall bike performance.
- Thermal Shock Resistance: Quality ceramic exhaust coats possess thermal shock resistance, which means they can handle sudden temperature changes without cracking or peeling. This resistance is particularly important for motorcycles that may experience rapid temperature fluctuations during operation or in varying weather conditions.
- Longevity and Durability: A motorcycle ceramic exhaust coat with high temperature resistance generally boasts greater longevity and durability. By resisting thermal breakdown and maintaining adhesion to exhaust surfaces, these coatings can extend the lifespan of the exhaust system, reducing the need for frequent repairs or replacements.
- Corrosion and Oxidation Resistance: Many high-temperature ceramic coatings also offer resistance to corrosion and oxidation, which are accelerated by high heat. This dual protection helps to preserve the exhaust system’s integrity, ensuring that both appearance and functionality are maintained over time.
What Ingredients Indicate a High-Quality Ceramic Exhaust Coat?
The best motorcycle ceramic exhaust coats are characterized by specific high-quality ingredients that enhance performance and durability.
- Silica: Silica is a key ingredient that provides excellent thermal resistance. It helps the ceramic coat withstand high temperatures without degrading, ensuring longevity under the harsh conditions of motorcycle exhaust systems.
- Alumina: Alumina enhances the hardness and durability of the coating. Its presence contributes to the coat’s ability to resist abrasions and impacts, which is crucial for maintaining the integrity of exhaust components during operation.
- Ceramic Particles: The inclusion of advanced ceramic particles improves the coating’s overall heat dissipation properties. These particles help to reduce heat soak in surrounding components, enhancing engine efficiency and performance.
- Resins: High-quality resins act as binders that help the ceramic particles adhere to the metal surface. They also provide a smooth finish and contribute to the coating’s flexibility, preventing cracking under thermal expansion and contraction.
- UV Stabilizers: UV stabilizers are added to protect the coating from sun damage and fading. This is particularly important for motorcycle exhausts that are often exposed to direct sunlight, ensuring the coat maintains its aesthetic appearance over time.
- Color Pigments: Quality ceramic coatings often include high-temperature color pigments that enhance visual appeal without compromising durability. These pigments are designed to withstand extreme heat without discoloration, allowing for customization while ensuring long-lasting performance.
What Are the Leading Brands of Motorcycle Ceramic Exhaust Coats Available Today?
The leading brands of motorcycle ceramic exhaust coats available today include:
- VHT: VHT (Very High Temperature) offers a range of ceramic coatings specifically designed for high-heat applications like motorcycle exhaust systems. Their coatings provide excellent durability, heat resistance, and a glossy finish, making them a popular choice among motorcycle enthusiasts looking to enhance both performance and aesthetics.
- Jet-Hot: Jet-Hot is renowned for its high-performance ceramic coatings that not only withstand extreme temperatures but also protect against corrosion and oxidation. Their coatings are often used in racing applications and come in various finishes, allowing riders to customize their bikes while ensuring the longevity of the exhaust system.
- Cerakote: Cerakote specializes in ceramic coatings that offer superior heat resistance and abrasion protection. Popular in both firearms and automotive applications, Cerakote’s motorcycle exhaust coatings are known for their versatility and ability to withstand harsh conditions, making them a reliable choice for performance riders.
- HPC Coatings: HPC Coatings provides ceramic exhaust coatings that are engineered to reduce heat transfer, thereby improving overall performance. Their products are designed to be applied easily and create a robust barrier against heat and corrosion, which is essential for maintaining the integrity of motorcycle exhaust systems.
- Black Magic: Black Magic is known for its high-temperature ceramic coatings that deliver exceptional thermal protection and a striking black finish. This brand is favored by riders who seek a combination of performance enhancement and an aggressive look for their motorcycle exhaust systems.
Which Brands Are Known for Reliability and Durability?
The main brands known for reliability and durability in motorcycle ceramic exhaust coatings include:
- VHT: VHT offers a range of high-performance ceramic coatings designed to withstand extreme temperatures and provide a robust protective layer.
- Cerakote: Known for its innovative ceramic coating technology, Cerakote provides exceptional durability, corrosion resistance, and a wide variety of color options.
- Eastwood: Eastwood specializes in high-quality coatings that are engineered for automotive applications, ensuring durability and heat resistance for motorcycle exhaust systems.
- Dupli-Color: Dupli-Color is a trusted brand that offers ceramic exhaust coatings that are easy to apply and provide good heat resistance and protection against rust.
- Rust-Oleum: Rust-Oleum produces a ceramic exhaust coating that is designed to provide long-lasting protection against heat and corrosion while being user-friendly for DIY applications.
VHT: VHT’s ceramic coatings are specifically formulated to endure high temperatures, making them ideal for motorcycle exhaust systems that experience significant heat. Their products often come in a variety of finishes, allowing for customization while maintaining durability.
Cerakote: Cerakote is recognized in the industry for its advanced ceramic coating technology, which not only enhances the appearance of motorcycle exhausts but also significantly improves their resistance to scratches, chemicals, and heat. Their coatings are applied using a spray method, ensuring a smooth and even finish.
Eastwood: Eastwood’s ceramic coatings are tailored for automotive enthusiasts, focusing on ease of application and long-lasting protection. Their products are designed to withstand high heat levels, making them a solid choice for motorcycle exhausts.
Dupli-Color: Dupli-Color’s ceramic exhaust coatings provide an affordable option that doesn’t compromise on quality, offering good heat resistance and a reliable finish. Their products are user-friendly, making them accessible for both professional and DIY applications.
Rust-Oleum: Rust-Oleum’s ceramic exhaust coatings are well-regarded for their protective qualities against rust and high temperatures. They are designed for easy application, often available in spray cans, making them convenient for motorcycle enthusiasts looking to maintain their exhaust systems.
How Can You Effectively Apply a Motorcycle Ceramic Exhaust Coat for Optimal Results?
To effectively apply a motorcycle ceramic exhaust coat for optimal results, consider the following steps:
- Surface Preparation: Properly clean and prepare the exhaust surface before application to ensure adhesion and longevity.
- Temperature Considerations: Apply the ceramic coat at the recommended temperature for the best curing and bonding results.
- Application Technique: Use the right application method, such as spraying or brushing, to achieve an even and thorough coat.
- Curing Process: Follow the specified curing process to maximize durability and performance of the ceramic exhaust coat.
Surface Preparation: Start by thoroughly cleaning the exhaust pipe to remove any grease, dirt, or old coatings. Use a degreaser and a wire brush or sandpaper to create a rough surface, which will enhance the bonding of the ceramic coat.
Temperature Considerations: Ensure that the exhaust system is at a suitable temperature during application, typically around room temperature or slightly warmer. This helps the coating to flow and adhere properly, avoiding issues like bubbling or peeling.
Application Technique: Depending on the product, you can either spray or brush the ceramic coat onto the exhaust. Spraying often provides a more uniform layer, while brushing allows for more controlled application; either way, multiple thin coats are preferable to a single thick one.
Curing Process: After application, follow the manufacturer’s instructions for curing, which may involve running the motorcycle at specific temperatures or allowing it to sit for a designated period. Proper curing is crucial as it helps the ceramic coat to harden and bond effectively, offering optimal protection and performance.
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