We researched and compared the top Harley exhaust gaskets on the market, evaluating manufacturer specifications, industry standards, and aggregated owner feedback. Our goal is to help you find a reliable seal that prevents exhaust leaks and maintains performance. Below are our picks, each with honest strengths and limitations.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Cometic Exhaust Gasket Set Best Overall Multi-layer steel (MLS) construction, 0.043 inch thickness |
9.0 | 🛒 Check Price |
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James Gaskets Exhaust Gasket Set Editor's Pick Graphite composite with steel core, 0.040 inch thickness |
8.7 | 🛒 Check Price |
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Vance & Hines Exhaust Gaskets Best for Performance Copper and graphite layered, 0.030 inch thickness |
8.4 | 🛒 Check Price |
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Screamin' Eagle Exhaust Gaskets by Harley-Davidson OEM Upgrade Copper plated steel, 0.035 inch thickness |
8.2 | 🛒 Check Price |
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Kuryakyn Exhaust Gaskets Best Value Solid copper, 0.040 inch thickness |
8.0 | 🛒 Check Price |
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DNA Exhaust Gaskets Budget Pick Aluminum composite, 0.050 inch thickness |
7.8 | 🛒 Check Price |
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Yaffe Exhaust Gaskets Specialty Use Paper composite with graphite coating, 0.020 inch thickness |
7.5 | 🛒 Check Price |
1. Cometic Exhaust Gasket Set: Best Overall
In our evaluation, the Cometic Exhaust Gasket Set stands out for its multi-layer steel construction that delivers reliable sealing under high heat and vibration. Based on owner feedback and the spec sheets, these gaskets maintain their crush well, reducing the chance of leaks even after multiple heat cycles. They fit plenty of Harley models, making them a all-around choice for many riders.
However, some users report that the gaskets can be slightly thicker than OEM, requiring careful torque application. If you have a heavily modified engine with extreme exhaust temperatures, these may still perform well, but for stock or mild builds they are an excellent pick. Those seeking a simpler, one-time install might prefer a single-layer copper gasket.
- Multi-layer steel design provides excellent crush and seal
- Fits most Harley Big Twin and Sportster models (1999-2023)
- Includes both front and rear gaskets in one set
Pros: Consistent seal even with minor flange imperfections; Durable enough for high-compression engines
Cons: May require retorquing after initial heat cycle
2. James Gaskets Exhaust Gasket Set: Editor's Pick
We compared the James Gaskets Exhaust Gasket Set against others and found its graphite composite offers superior heat dissipation, which is critical for long rides. Based on manufacturer specifications and owner reviews, these gaskets seal quickly and stay tight without frequent retorquing. They are a solid choice for touring bikes that see heavy use.
On the downside, the graphite material can crumble if you overtighten or mishandle the gaskets during installation. We recommend using a torque wrench and following the spec sheet. If you are a beginner or prefer a more forgiving material, a copper gasket might be better suited.
- Graphite material resists heat up to 1000 degrees Fahrenheit
- Steel core prevents blowout under pressure
- Designed for 1999-2023 Harley Touring and Softail models
Pros: Excellent heat resistance reduces gasket deterioration; Easy to compress and conform to uneven surfaces
Cons: Graphite can be fragile during handling if not careful
3. Vance & Hines Exhaust Gaskets: Best for Performance
In our evaluation, the Vance & Hines Exhaust Gaskets are tailored for riders who have upgraded to aftermarket exhausts and want to maximize flow. Based on owner feedback, these gaskets provide a noticeable reduction in leaks at high RPMs compared to stock gaskets. Their thin profile helps maintain exhaust velocity.
However, the thinner construction means they may wear out faster, especially on bikes with extreme heat or vibration. Some users reported needing to replace them after a season of heavy riding. If you prioritize longevity over peak performance, consider a thicker multi-layer steel gasket instead.
- Designed for high-flow aftermarket exhaust systems
- Thin profile allows maximum exhaust flow
- Includes two gaskets per pack
Pros: Improves throttle response and power with performance pipes; Layered design combines crush and heat resistance
Cons: Thinner material may need replacement sooner than thicker options
4. Screamin' Eagle Exhaust Gaskets by Harley-Davidson: OEM Upgrade
We researched the Screamin’ Eagle Exhaust Gaskets and found they offer the reliability of genuine Harley parts with a performance edge. Based on manufacturer specs, the copper plating improves heat dissipation and reduces the chance of the gasket sticking to the flange. They are a safe bet for owners who want a hassle-free install.
However, the cost is higher than many aftermarket options, and some owners report that they perform similarly to standard copper gaskets at a lower price. If you are budget-conscious or have an older model, you might get equal results from a non-OEM brand.
- Genuine Harley-Davidson performance part
- Copper plating aids heat transfer and sealing
- Direct fit for 2007-2023 Touring and Softail models
Pros: OEM quality ensures perfect fitment; Copper layer helps prevent galling on exhaust flanges
Cons: Premium pricing compared to aftermarket alternatives
5. Kuryakyn Exhaust Gaskets: Best Value
In our comparison, the Kuryakyn Exhaust Gaskets offer solid performance at a budget-friendly price point. Based on owner feedback, these copper gaskets seal well initially and are easy to work with, making them a popular choice for DIYers. The pack of four provides extras for future replacements or dual exhaust setups.
However, copper gaskets can harden over time and may leak if not replaced after removal. Some users noted that they needed to tighten the bolts after a few rides to maintain the seal. If you prefer a set-and-forget solution, a multi-layer steel option might be more reliable.
- Solid copper construction for excellent heat transfer
- Fits most Harley models with 1.75 inch exhaust ports
- Pack of 4 includes spares for future use
Pros: Affordable price for a set of four; Copper is forgiving and easy to install
Cons: May require annealing if reused after removal
6. DNA Exhaust Gaskets: Budget Pick
We evaluated the DNA Exhaust Gaskets as a budget-friendly option that can work for riders on a tight budget. Based on the spec sheet, the thicker aluminum composite can help seal exhaust ports that have minor warping or surface imperfections. Owner feedback indicates they are adequate for stock or lightly modified bikes.
However, aluminum has lower heat tolerance compared to copper or steel, and some users reported gasket failure after extended high-RPM riding. If you ride aggressively or have a high-performance engine, we recommend spending a bit more for a more durable material.
- Aluminum composite resists corrosion
- Thicker design fills larger gaps
- Compatible with 1999-2023 Harley models
Pros: Very low price for a set of two; Thicker material helps seal worn flanges
Cons: Aluminum may not withstand extreme heat as well as copper or steel
7. Yaffe Exhaust Gaskets: Specialty Use
In our research, the Yaffe Exhaust Gaskets are a niche product designed for custom builds where standard gaskets are too thick. Based on owner feedback, they can be trimmed easily to fit odd-sized ports, making them useful for one-off projects. The thin profile allows for maximum exhaust flow in tight spaces.
However, the paper composite construction is not built for longevity. Many users reported leaks within a few hundred miles, requiring replacement. We recommend these only for temporary fixes or show bikes that see limited riding. For daily riders, skip this pick and choose a more durable option.
- Ultra-thin design for tight clearance applications
- Graphite coating provides initial seal
- Sold as single gaskets, order two for dual exhaust
Pros: Works well for custom exhaust setups with minimal gap; Easy to trim to fit non-standard ports
Cons: Not durable for long-term use; may need frequent replacement
Frequently Asked Questions
What type of exhaust gasket material is best for Harley motorcycles?
Based on our research, multi-layer steel (MLS) and copper gaskets are the most popular choices. MLS gaskets offer excellent durability and consistent sealing, while copper provides good heat transfer and is forgiving during installation. Graphite composite options also perform well but can be fragile. Your choice should match your riding style and exhaust system.
How often should Harley exhaust gaskets be replaced?
There is no set interval, but we recommend inspecting gaskets whenever you remove the exhaust. Many owners replace them every 20,000 to 30,000 miles or if a leak develops. Signs of failure include a ticking noise, sooty residue, or a drop in performance. Always use new gaskets when reinstalling exhaust components.
Can I reuse exhaust gaskets after removal?
It depends on the material. Copper gaskets can sometimes be annealed and reused, but multi-layer steel and graphite gaskets are designed for one-time use. Based on owner feedback, reusing gaskets often leads to leaks. We recommend installing new gaskets whenever the exhaust is removed to ensure a proper seal.
Do I need to use a specific torque when installing exhaust gaskets?
Yes, over-tightening can damage the gasket or flange, while under-tightening causes leaks. Manufacturer spec sheets typically recommend 10-15 ft-lbs for most Harley exhaust flange nuts. Always use a torque wrench and follow the sequence if there are multiple bolts. Retorque after the first heat cycle as gaskets settle.
Will aftermarket exhaust gaskets void my Harley warranty?
Generally, using aftermarket gaskets does not void the warranty unless they cause damage. However, Harley-Davidson may deny a claim if they determine a non-OEM gasket led to a failure. To be safe, we recommend using genuine Harley gaskets during the warranty period. After the warranty expires, aftermarket options are fine.
Our Verdict
After researching and comparing the top Harley exhaust gaskets, we recommend the Cometic Exhaust Gasket Set as the best overall for its reliable multi-layer steel construction and wide fitment. For those seeking a performance edge, the Vance & Hines Exhaust Gaskets are a strong runner-up, especially with aftermarket pipes. Choose based on your bike’s specific needs and your budget.
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