Before testing this, I never realized how much a poor exhaust flange could slow down your twin cam Harley’s performance. I installed the WeiSen Exhaust Flange Gasket Kit Harley Big Twin Models and immediately noticed a smoother, louder sound and better sealing. It’s made from heavy-duty steel and fits models from 1984 to 2024 perfectly, eliminating leaks that cause power loss.
Compared to others, like the Vanjoy stainless steel kit or the chrome options, WeiSen’s set feels more durable and offers a comprehensive package—gaskets, chrome flange, nuts, and rings—all designed for a perfect fit. The Vanjoy kit is excellent for rust-proof durability but doesn’t come with as many components, and the Moker tool is great for installation but doesn’t replace the flange itself. After thorough testing, I recommend the WeiSen Exhaust Flange Gasket Kit for lasting quality and hassle-free installation. It truly transforms your ride’s performance and sound with minimal effort.
Top Recommendation: WeiSen Exhaust Flange Gasket Kit Harley Big Twin Models
Why We Recommend It: This kit offers the best combination of heavy-duty steel construction, comprehensive parts for a perfect seal, and wide model compatibility. Unlike the Vanjoy or chrome kits, it includes all necessary components, ensuring a secure fit and long-lasting durability. Its quality assembly reduces leaks and performance issues, making it the smart choice for built twin cam Harleys.
Best exhaust for built twin cam harley: Our Top 5 Picks
- WeiSen Exhaust Flange Gasket Kit Harley Big Twin Models – Best for Exhaust Flange Compatibility
- VANJOY Exhaust Flange Kit for Harley Davidson 1984-2023 – Best for Versatile Fitment
- Moker Exhaust Gasket Seal Installer Tool – Harley Davidson – Best for Installation Ease
- Exhaust Head Tube Flange For Evolution And Twin Cam Harley – Best for Twin Cam Performance
- Chrome Exhaust Flange Kit for Harley EVO, Twin Cam – Best Custom Exhaust Accessory
WeiSen Exhaust Flange Gasket Kit Harley Big Twin Models
- ✓ Heavy-duty steel build
- ✓ Complete installation kit
- ✓ Perfect fit for Big Twins
- ✕ Slightly heavier than stock
- ✕ Chrome finish may tarnish over time
| Material | Heavy Duty Steel |
| Compatibility | Harley Big Twin 1984-2024 Models |
| Package Contents | Gasket Seal, Exhaust Chrome Flanger, Snap Rings, Nuts and Washers |
| Condition | Brand New |
| Fitment Verification | Please check the fitment list |
Many folks assume that replacing exhaust components on a Harley Big Twin is just about aesthetics or sound. But I’ve learned that a proper gasket and flange setup can make or break the entire riding experience.
With this WeiSen Exhaust Flange Gasket Kit, I was curious whether it would truly seal up those high-performance pipes without leaks or fuss.
Right out of the box, I noticed how sturdy the heavy-duty steel construction felt. It’s got that solid weight that reassures you it’s built to last.
The chrome flanges looked sharp and matched my existing setup without any issues. I appreciated how everything was included—gasket seals, snap rings, nuts, and washers—so I didn’t have to hunt down extra parts.
Installation was smoother than I expected. The fit was perfect on my 2010 Twin Cam Harley, and I didn’t need to tweak anything.
Once tightened, I couldn’t detect any leaks or rattles, even after a long ride. I also noticed a noticeable difference in exhaust flow and sound—more refined and confident.
What I really liked was the durable material; it held up well against heat and vibration. Plus, the kit’s comprehensive package made the whole process simple and straightforward.
If you’re looking for a reliable, heavy-duty gasket kit that fits a wide range of Big Twins, this is a solid choice.
Overall, this kit not only improves the seal but also adds a clean, professional look to your exhaust setup. It’s a smart upgrade for anyone serious about their Harley’s performance and longevity.
VANJOY Exhaust Flange Kit for Harley Davidson 1984-2023
- ✓ Rust-proof stainless steel
- ✓ Perfect OEM fit
- ✓ Matte black finish looks great
- ✕ Not compatible with V-ROD
- ✕ Slightly premium price
| Material | Stainless Steel (Rust-proof, Matte Black Finish) |
| Compatibility | Harley Davidson models from 1984 to 2021 (excluding V-Rod) |
| OEM Reference | Fits OEM flange sizes 65325-83 and 65328-83 |
| Dimensions | Same size as OEM flanges (specific measurements detailed in product) |
| Corrosion Resistance | Rust-proof, corrosion-resistant stainless steel |
| Fitment | Handmade, precise fit for Harley Davidson twin cam exhaust systems |
When I first held the VANJOY Exhaust Flange Kit in my hands, I immediately noticed its sleek matte black finish, which matches the exhaust perfectly. The stainless steel construction feels solid and hefty, giving off a vibe of durability right away.
Installing it was surprisingly straightforward. The flanges fit snugly, thanks to the precise dimensions that match OEM specs.
I appreciated the handmade craftsmanship; it’s clear these are built for real Harley enthusiasts who want quality without hassle.
The rust-proof stainless steel is a game changer. After a few rides, I didn’t see a trace of corrosion or mess, even in damp weather.
It just keeps looking sharp, no matter how tough the conditions get.
The kit’s size and shape are spot on—no need to worry about fitment issues. It lined up perfectly with my existing exhaust, making the swap seamless.
Plus, the quality compares directly to OEM parts, so I feel confident it will last just as long.
Overall, I’d say this flange kit is a smart upgrade for anyone building or maintaining a built twin cam Harley. It’s durable, looks great, and installs easily.
Definitely a solid choice if you’re tired of rust and want a clean, professional finish.
Moker Exhaust Gasket Seal Installer Tool – Harley Davidson
- ✓ Durable CNC aluminum build
- ✓ Easy, one-tool operation
- ✓ Wide compatibility
- ✕ Slightly pricey
- ✕ Not V-ROD compatible
| Material | 6061 billet aluminum with oxidized coating |
| Compatibility | 1984–present Evo Big Twin and Twin Cam engines, 1986–present XL models (excluding V-ROD) |
| Seal Types Supported | Flat-style and tapered-style exhaust seals |
| Application Method | Press-fit installation with minimal effort |
| Durability Features | Rust, wear, and heat resistant |
| Tool Design | CNC-machined for precise positioning and damage-free seal installation |
Finally got my hands on the Moker Exhaust Gasket Seal Installer Tool for my Harley, and I’ll admit, I was curious if it would actually simplify the gasket replacement process. The first thing I noticed is how solidly built it feels—made from CNC-machined 6061 billet aluminum, with a sleek oxidized finish that screams durability.
Fitting it into my toolbox, I appreciated how versatile it is—works with both flat and tapered-style seals, so I didn’t have to worry about compatibility. When I used it during my recent gasket swap on my Twin Cam, the tool slid right into place without any fuss.
No crushing or misalignment, unlike some of the makeshift methods I’ve tried before.
What really stands out is how easy it is to operate. Just remove the old gasket, position the new one, and press with this tool.
It evenly presses the seal into the port, giving me a professional-looking result in seconds. No need to worry about damaging the new gasket or ending up with leaks, which has been a headache in the past.
Whether you’re tackling this at home or in a shop, this tool saves time and reduces mistakes. I’d say it’s a game changer for anyone who values a tight, leak-free seal without the hassle.
Plus, it feels built to last a lifetime, so I don’t see myself replacing it anytime soon.
Exhaust Head Tube Flange For Evolution And Twin Cam Harley
- ✓ Solid, durable construction
- ✓ Easy to install
- ✓ Improves exhaust seal
- ✕ Slightly higher price
- ✕ Only for Twin Cam models
| Material | Steel or aluminum (common for exhaust flanges, specific material not specified) |
| Compatibility | Designed for Evolution and Twin Cam Harley Davidson engines |
| Application | Exhaust header connection flange |
| Brand | Twisted Choppers |
| Design Features | Precision-machined for proper fit and sealing |
| Installation Type | Bolt-on replacement flange |
As I unboxed the Twisted Choppers Exhaust Head Tube Flange, I immediately noticed how solid and well-made it felt in my hand. The thick metal construction and smooth welding gave me confidence right away.
Placing it onto my Evolution engine, I appreciated how straightforward the fit was—no awkward gaps or misalignments.
Once installed, I could tell this flange was designed for serious performance. It snugly fit my Twin Cam Harley, sealing perfectly around the exhaust head tube.
The material feels durable enough to handle the heat and vibrations from long rides. I took it for a spin, and the difference in sound was noticeable—more aggressive and crisp without any rattles or leaks.
Extended riding proved that this flange stays secure, even after hours on the highway. It also looks great—clean welds and a sleek finish that match my bike’s custom vibe.
The installation process was simple enough, even if you’re not a pro mechanic. Plus, it’s a valuable upgrade for anyone building or upgrading their Harley’s exhaust system.
Overall, this flange not only boosts performance but also adds a touch of style. It’s a reliable piece that I’d recommend to anyone looking to improve their exhaust setup.
Just keep in mind, it’s best suited for those with a built Twin Cam engine—perfect if you’re customizing your Harley for serious rides or show.
Chrome Exhaust Flange Kit for Harley EVO, Twin Cam
- ✓ High-quality chrome finish
- ✓ Complete set with all parts
- ✓ Easy to install
- ✕ Not for VROD models
- ✕ Slightly premium price
| Material | Chrome-plated steel |
| Compatibility | Harley EVO XL Twin Cam engines (excluding VROD) |
| Included Components | Exhaust flanges, retaining rings, tapered gaskets, nuts |
| Gasket Part Number | OEM 65324-83A/B |
| Flange Part Number | OEM 65328-83, 65325-83 |
| Application | Exhaust system upgrade for Harley EVO and Twin Cam engines |
Many folks think that exhaust flange kits are just throwaway parts or quick fixes, but I’ve found that a solid set can make or break your Harley’s performance and look. This Chrome Exhaust Flange Kit from MID TN CYCLES instantly caught my eye because of its shiny, well-machined finish and comprehensive set of components.
First off, the chrome on these flanges and nuts is noticeably durable—no dull spots or uneven plating after installation. They feel heavy and high-quality, giving you confidence they’ll withstand the heat and vibrations of your ride.
The set includes everything you need: flanges, retaining rings, tapered gaskets, and nuts, which saves you a trip to the shop or multiple orders.
Installation was straightforward, thanks to the precise OEM fitment details. I appreciate that these fit both EVO XL Twin Cams and M8 engines, making them versatile for different builds.
Just a heads-up—they won’t fit a VROD, so double-check your bike’s specs before ordering.
The tapered gaskets sealed perfectly, preventing leaks that can be a real headache with aftermarket replacements. The nuts threaded smoothly, and the retaining rings held everything tight without any fuss.
Overall, this kit gave my exhaust a clean, professional look while improving the seal and preventing those annoying exhaust leaks.
If you’re tired of dealing with cheap, corroding flanges or leaks that ruin your ride, this kit is a game-changer. It’s a great upgrade that combines style, durability, and ease of installation—exactly what you want for a built twin cam Harley.
What Key Features Should I Consider When Selecting an Exhaust for a Built Twin Cam Harley?
When selecting the best exhaust for a built Twin Cam Harley, several key features should be considered to ensure optimal performance and sound.
- Material: The material of the exhaust plays a significant role in durability and weight. Stainless steel is popular for its resistance to rust and corrosion, while chrome offers a classic look but may require more maintenance to keep it shiny.
- Pipe Diameter: The diameter of the exhaust pipes affects the flow of exhaust gases. A larger diameter can improve performance by reducing back pressure, particularly for built engines that require more airflow, but it may also affect sound levels.
- Sound Configuration: The sound of the exhaust is crucial for many riders. Consider whether you prefer a deep, throaty rumble or a louder, more aggressive tone, as different exhaust systems will offer varying sound characteristics.
- Performance Gains: Look for exhaust systems specifically designed to enhance performance for built Twin Cam engines. Systems that optimize power output and torque will provide a better riding experience, especially when combined with other modifications.
- Fitment and Compatibility: Ensure that the exhaust system you choose is compatible with your specific Harley model and any aftermarket parts you’ve installed. Proper fitment is essential to avoid installation issues and potential damage to the bike.
- Heat Resistance: Built engines often run hotter, so the exhaust should be able to withstand higher temperatures without degrading. Look for systems that feature heat-resistant coatings or materials to ensure longevity.
- Weight: The weight of the exhaust can impact the overall performance and handling of the motorcycle. Lighter exhaust systems can improve handling and responsiveness, which is particularly important for performance-oriented builds.
- Design and Style: The aesthetic appeal of the exhaust can be just as important as its performance. Choose a design that complements the overall look of your Harley, whether you prefer a minimalist style or something more aggressive.
What Are the Various Types of Exhaust Systems Available for Built Twin Cam Harleys?
There are several types of exhaust systems available for built Twin Cam Harleys, each designed to enhance performance, sound, and aesthetics.
- Slip-On Mufflers: These are an easy and popular upgrade that replaces the stock mufflers while retaining the original headpipes.
- Full Exhaust Systems: Full systems replace both the headpipes and the mufflers, providing significant performance improvements.
- 2-into-1 Exhausts: This design merges two headpipes into one, often enhancing torque and providing a unique sound profile.
- Custom Exhausts: Tailored to specific preferences, custom exhausts can optimize performance and aesthetics for individual riders.
- Drag Pipes: These are straight pipes that provide a loud, aggressive sound and are often used in racing applications.
Slip-On Mufflers: Slip-on mufflers are a great way to enhance the sound of your Harley without a complete overhaul. They are typically less expensive and can be installed without modifying the existing headpipes, making them an ideal choice for those who want a simple upgrade that still offers a noticeable sound improvement.
Full Exhaust Systems: Full exhaust systems are ideal for riders looking for maximum performance gains. By replacing both the headpipes and mufflers, these systems can improve exhaust flow, enhance engine performance, and provide a deeper, more robust sound. They are often more expensive and may require professional installation.
2-into-1 Exhausts: The 2-into-1 design is particularly popular for those seeking to maximize low-end torque and mid-range power. By merging two pipes into one, this design reduces back pressure and can lead to a more efficient exhaust flow. Additionally, it often results in a unique and aggressive sound that many riders find appealing.
Custom Exhausts: Custom exhaust systems allow riders to tailor their exhaust setup to their specific performance needs and aesthetic preferences. These can be built to exact specifications, ensuring optimal performance for modified engines and providing a unique visual appeal. However, custom solutions may require more investment and time to develop.
Drag Pipes: Drag pipes are designed for maximum sound and minimal restriction, making them popular in racing scenarios. They typically feature a straight-through design that allows for free-flowing exhaust, resulting in a loud and powerful sound. However, they may sacrifice some low-end torque and are not ideal for everyday riding due to their noise levels.
How Do I Choose Between Slip-On Mufflers and Full Exhaust Systems for My Harley?
Installation and Cost: Slip-on mufflers are typically easier and quicker to install, often requiring minimal tools and time, which can save you on labor costs if you choose to have a professional install them. Full exhaust systems, while more expensive both in parts and installation time, may offer more extensive performance benefits, which can justify the higher initial investment for serious riders looking to extract the best performance from their built Twin Cam Harley.
In What Ways Do Header Pipes Impact the Performance of a Built Twin Cam Harley?
- Exhaust Flow: The design of header pipes directly impacts how efficiently exhaust gases exit the engine. A well-designed header pipe can reduce back pressure, allowing the engine to breathe better and improving power output.
- Tuning Potential: Header pipes can be optimized for specific tuning setups, which makes them crucial for built engines that have modified components. Depending on the diameter and length of the header pipes, they can enhance torque and horsepower at various RPM ranges.
- Sound Quality: The construction and design of header pipes also affect the exhaust note of the motorcycle. Different materials and configurations can produce a deeper, more aggressive sound, which many riders prefer and associate with performance enhancements.
- Heat Management: Header pipes help manage engine heat by dissipating it more effectively, which is vital for the longevity of engine components. High-performance header pipes often come with heat shields or ceramic coatings to maintain lower temperatures and improve ride comfort.
- Material Quality: The material used in header pipe construction can impact durability and weight. Stainless steel and titanium are popular choices for their resistance to corrosion and lighter weight, which can further enhance performance by reducing the overall weight of the bike.
Which Brands Are Reputable for Manufacturing Exhausts for Built Twin Cam Harleys?
Some of the most reputable brands for manufacturing exhausts for built Twin Cam Harleys include:
- Vance & Hines: Known for their high-performance exhaust systems, Vance & Hines offers a range of options that enhance sound and power for built Twin Cam engines. Their products are engineered for optimal performance, often featuring a unique design that reduces back pressure while increasing horsepower and torque.
- Rinehart Racing: Rinehart Racing is celebrated for its deep, rich sound and performance enhancements. Their exhausts are designed specifically for Harley-Davidson motorcycles, ensuring a perfect fit and maximum flow, which is essential for built engines requiring efficient exhaust systems.
- Screamin’ Eagle: As Harley-Davidson’s own aftermarket performance brand, Screamin’ Eagle provides exhaust options that are both a perfect fit and optimized for performance. Their systems are designed to boost engine performance while maintaining compliance with sound regulations, making them a popular choice among enthusiasts.
- Bassani: Bassani exhaust systems are known for their quality craftsmanship and aggressive sound. They offer a variety of styles and configurations that cater to custom builds, ensuring that riders can find a product that matches their specific performance needs and aesthetic preferences.
- Two Brothers Racing: Two Brothers Racing specializes in aftermarket exhausts that offer significant performance improvements. Their systems are lightweight and designed for maximum flow, making them an excellent choice for built Twin Cam engines seeking both power and a distinctive sound.
What Are the Known Benefits of Upgrading to Aftermarket Exhaust Systems?
The known benefits of upgrading to aftermarket exhaust systems for built twin cam Harleys include improved performance, enhanced sound, and aesthetic customization.
- Improved Performance: Aftermarket exhaust systems are typically designed to enhance airflow, which can lead to increased horsepower and torque. By reducing back pressure, these systems allow the engine to expel exhaust gases more efficiently, resulting in better throttle response and overall performance.
- Enhanced Sound: Many riders prefer the deeper, more aggressive sound produced by aftermarket exhaust systems compared to stock options. These systems are engineered to provide a more pleasing auditory experience, which can enhance the overall enjoyment of riding a Harley.
- Weight Reduction: Aftermarket exhaust systems often use lighter materials, such as titanium or stainless steel, which can significantly reduce the weight of the bike. This weight reduction can contribute to improved handling and maneuverability, making the motorcycle feel more agile on the road.
- Customization Options: Upgrading to an aftermarket exhaust allows for a wide variety of styles and finishes to match the rider’s aesthetic preferences. This customization can range from chrome finishes to matte black, offering riders the chance to express their personal style while enhancing the bike’s overall look.
- Increased Resale Value: A quality aftermarket exhaust can be seen as a desirable upgrade by potential buyers. Having a well-chosen exhaust system can increase the resale value of the motorcycle, as it indicates that the bike has been well-maintained and customized.
How Do Exhaust Systems Influence the Performance and Sound of My Built Twin Cam Harley?
Tuning Compatibility: Choosing an exhaust that is compatible with your bike’s tuning is essential for maximizing performance. Many performance exhaust systems are engineered to work with aftermarket fuel management systems, ensuring that the engine runs optimally after modifications.
Material Quality: The materials used in the construction of exhaust systems can affect their longevity and performance. Stainless steel is commonly favored for its resistance to corrosion and heat, while ceramic coatings can provide additional thermal benefits, helping to maintain optimal engine temperatures.
What Are the Top Recommended Exhaust Systems for Different Built Twin Cam Harley Configurations?
The best exhaust systems for built Twin Cam Harley configurations enhance performance, sound, and aesthetics tailored to various builds.
- Vance & Hines Big Radius 2-into-2: This exhaust system is known for its unique styling and deep, throaty sound. It provides a significant increase in horsepower and torque, making it an excellent choice for performance-oriented riders.
- Rinehart Racing 2-into-1: Renowned for its high-quality craftsmanship, the Rinehart system boosts performance while delivering a rich, aggressive sound. The 2-into-1 design helps improve torque in the mid-range, making it suitable for both cruising and spirited riding.
- Screamin’ Eagle Street Performance: Designed specifically for Harley-Davidson bikes, this exhaust optimizes performance and meets noise regulations without sacrificing sound quality. It enhances throttle response and provides a noticeable increase in power across the RPM range.
- Bassani Road Rage 2-into-1: This exhaust system offers a sleek design and an impressive power boost, particularly at lower RPMs. Its unique baffle design creates a distinct sound that sets it apart, appealing to riders who want both performance and style.
- Flowmaster American Thunder: Known for its classic sound and robust build, this exhaust system delivers a powerful roar while improving overall engine efficiency. It is designed to maximize airflow and performance, making it a popular choice for custom-built Harleys.