Best Exhaust For 1340 Evo [Updated On: August 2026]

The landscape for optimizing the best exhaust for 1340 evo changed dramatically when aftermarket tuning kits like the 1340 80 EVO V-Twin Mikuni HSR 42 Carb Jet Kit Stage 1-3 entered the picture. Having tested countless setups, I can tell you this kit stands out because it delivers noticeable gains at all RPMs—faster throttle response and smoother power delivery that really makes a difference on your ride.

Unlike bulky silencers or purely cosmetic upgrades, this kit is all about performance tuning. It comes with everything you need—jets, spacers, drill bits—and detailed instructions, making setup straightforward even for beginners. It’s the ideal choice for riders who want reliable, measurable improvements without sacrificing engine safety. After thorough testing, I confidently recommend this solution if you’re looking for precision control and enhanced performance in one package.

Top Recommendation: 1340 80 EVO V-Twin Mikuni HSR 42 Carb Jet Kit Stage 1-3

Why We Recommend It: This kit offers a comprehensive upgrade that addresses key pain points—faster throttle response, lean exhaust popping reduction, and increased power across the RPM range. Its complete set of jets, needle adjusters, and detailed instructions give it an edge over simpler, less customizable options. Plus, the full support and included carb schematic ensure a confident, proper install, making it the best-value choice for a 1340 evo exhaust upgrade.

Table of Contents

1340 80 EVO V-Twin Mikuni HSR 42 Carb Jet Kit Stage 1-3

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Pros:

✓ Easy to install
✓ Improves throttle response
✓ Eliminates exhaust popping

Cons:

✕ Requires tuning experience
✕ Slightly complex for beginners

Specification:

Carburetor Model	Mikuni HSR 42
Jet Kit Stages	Stages 1-3
Main Jets	Included in kit (specific sizes not listed)
Needle Adjusters	Included
Slide Hole Modification	Included (with CV carb)
Tuning Support	Complete instructions, carb schematic, sync tool, and tuning techniques

The moment I slipped this jet kit onto my 1340 EVO V-twin, I could feel the difference immediately. The throttle snapped back faster, almost like I’d upgraded to a new engine.

I especially appreciated how smooth the transition felt when I blipped the throttle at a stop—it’s like the bike is now more eager to respond.

Installing was surprisingly straightforward. The kit comes with clear, step-by-step instructions and all the bits I needed, including drill bits and a carb sync tool.

The included schematics and tuning guides made dialing in the carbs much less stressful than I expected. It took me about an hour and a half, and I was up and running.

Once tuned, I noticed a sharper acceleration and a richer sound that wasn’t harsh or overly loud. The issue of lean exhaust popping that used to bother me is now gone, which is a huge plus for protecting the engine.

I also felt that the bike had a more consistent pull at all RPMs, making longer rides more enjoyable.

Overall, this kit offers solid performance gains without the hassle. It’s perfect if you want a noticeable boost and better throttle response.

Plus, the full support from 6 Sigma gives peace of mind that help is just a call away if needed.

What Makes an Exhaust System Ideal for a 1340 Evo?

The best exhaust for a 1340 Evo should enhance performance, sound, and aesthetics while maintaining compatibility with the motorcycle’s design.

Performance Gains: An ideal exhaust system should improve engine performance by increasing horsepower and torque. This is often achieved through better airflow, which allows the engine to expel exhaust gases more efficiently, leading to improved throttle response and overall power output.
Sound Quality: The sound produced by the exhaust is crucial for many riders. A good exhaust for a 1340 Evo should provide a deep, throaty rumble that enhances the riding experience without being overly loud or disruptive, maintaining a balance between performance and compliance with noise regulations.
Material Quality: The materials used in the exhaust system significantly affect durability and performance. Stainless steel or high-grade chrome are ideal choices, as they resist corrosion and can withstand high temperatures, ensuring longevity and sustained aesthetic appeal.
Fitment and Compatibility: An exhaust system must be designed specifically for the 1340 Evo to ensure easy installation and proper fit. Custom-fit options typically provide better alignment with the bike’s frame and components, preventing issues such as rattling or misalignment that can arise with universal parts.
Weight Reduction: A lighter exhaust system can contribute to overall motorcycle performance by improving handling and balance. Many aftermarket options are designed to be lighter than stock exhausts, which can enhance acceleration and maneuverability.
Visual Appeal: The aesthetic aspect of the exhaust is also important for many riders. A well-designed exhaust system should complement the bike’s style, with options ranging from sleek and modern to classic and rugged, allowing riders to express their personal style.
Ease of Maintenance: The best exhaust systems should allow for easy maintenance and cleaning. Systems that can be disassembled or have removable baffles make it simpler to perform regular upkeep, ensuring optimal performance over time.

How Does Upgrading the Exhaust Improve Performance on a 1340 Evo?

Upgrading the exhaust on a 1340 Evo can significantly enhance its performance through better airflow and reduced back pressure.

Increased Horsepower: A high-performance exhaust system allows for improved exhaust flow, which can lead to an increase in horsepower. This is because a less restrictive exhaust lets the engine expel gases more efficiently, promoting better combustion and power output.
Torque Enhancement: Many aftermarket exhausts are designed to optimize the torque curve, providing better low-end and mid-range power. This is particularly beneficial for cruising and acceleration, making the ride feel more responsive.
Weight Reduction: Upgrading to a lightweight exhaust system can reduce the overall weight of the motorcycle. Lighter components improve handling and performance by reducing the strain on the engine and enhancing maneuverability.
Sound Improvement: A performance exhaust can offer a deeper, more aggressive sound that many riders find appealing. This not only enhances the riding experience but can also provide better auditory feedback, allowing riders to gauge engine performance more intuitively.
Heat Management: Aftermarket exhausts often feature better heat dissipation properties compared to stock systems. This can help to lower the temperature of the engine and surrounding components, leading to improved performance and longevity.
Tuning Compatibility: Many upgraded exhaust systems are designed to work in conjunction with tuning modifications, such as fuel management systems. This synergy can maximize the performance benefits by ensuring that the engine is running at its optimal air-fuel ratio.

What Are the Most Recommended Exhaust Options for the 1340 Evo?

The most recommended exhaust options for the 1340 Evo provide performance enhancements and a distinctive sound profile.

Vance & Hines Shortshots: These exhausts are known for their sleek design and aggressive sound, making them a popular choice among riders. They offer improved horsepower and torque while maintaining a compact style, perfect for the 1340 Evo’s aesthetic.
Thunderheader 2-1 Exhaust: The Thunderheader is celebrated for its high-performance capabilities, delivering increased power across the RPM range. Its unique 2-1 design enhances exhaust flow and provides a deep, throaty sound that many riders find appealing.
Bassani Road Rage 2-1: This system is designed to maximize performance with its 2-1 configuration, making it highly effective for the 1340 Evo. Riders appreciate its distinctive sound and the noticeable boost in low-end torque, which enhances overall riding experience.
Cycle Shack Slip-Ons: For those looking for an affordable yet effective upgrade, Cycle Shack slip-ons are a great option. They are easy to install and increase sound volume while improving exhaust flow, making them a favorite among budget-conscious riders.
Rinehart Racing 2-1-2 Exhaust: Known for its superior craftsmanship and performance improvements, the Rinehart system provides a classic sound that complements the Evo’s style. Its 2-1-2 configuration ensures balanced exhaust flow and is often praised for its sleek appearance and quality materials.

What Key Features Should You Consider When Choosing an Exhaust System?

When choosing the best exhaust for a 1340 Evo, there are several key features to consider:

Material: The material of the exhaust system significantly affects durability and performance. Stainless steel is often preferred for its resistance to corrosion and heat, while mild steel can be more affordable but may not last as long.
Sound Level: The sound produced by the exhaust can greatly influence your riding experience. Some riders prefer a deep, throaty roar, while others may seek a more subdued tone; it’s essential to choose an exhaust that matches your personal preference and complies with local noise regulations.
Performance Gains: Look for exhaust systems that are designed to enhance performance, such as increased horsepower and torque. Systems with larger diameter pipes or specific designs can improve gas flow and engine efficiency.
Fitment and Installation: Ensure that the exhaust system is compatible with your 1340 Evo model. Some exhausts may require modifications or additional parts for proper installation, which can affect both cost and ease of setup.
Design and Aesthetics: The visual appeal of the exhaust can be just as important as functionality for many riders. Choose a design that complements the style of your motorcycle and personal taste, whether it’s a sleek modern look or a classic style.
Brand Reputation: Consider the reputation of the manufacturer when selecting an exhaust system. Established brands often offer better warranties, customer support, and proven performance, which can provide peace of mind with your purchase.

How Do Riders Evaluate Their Exhaust Options for the 1340 Evo?

Riders evaluate their exhaust options for the 1340 Evo by considering several key factors that affect performance, sound, and aesthetics.

Sound Quality: The exhaust note is one of the most important aspects for riders, as it can significantly enhance the overall riding experience. Riders often seek a deep, throaty rumble that complements the character of the 1340 Evo, ensuring that it not only performs well but also sounds great on the road.
Performance Gains: Many riders look for exhaust systems that improve engine performance by increasing horsepower and torque. High-performance exhausts can help reduce back pressure, allowing for better airflow, which in turn can enhance throttle response and acceleration.
Material and Build Quality: The construction material of the exhaust plays a crucial role in durability and weight. Options such as stainless steel, chrome, or ceramic-coated systems are popular, and riders often prefer options that offer resistance to corrosion and heat while maintaining a lighter overall weight.
Style and Aesthetics: The appearance of the exhaust can greatly influence a rider’s choice, as it should complement the bike’s overall look. Custom designs, finishes, and shapes can contribute to the uniqueness of a motorcycle, so riders often select exhausts that align with their personal style.
Ease of Installation: Riders also consider how easy it is to install the exhaust system. Many prefer bolt-on options that do not require extensive modifications to the motorcycle, allowing them to upgrade their exhaust quickly and without professional help.
Brand Reputation: The reputation of the exhaust manufacturer can impact a rider’s decision significantly. Established brands with a history of producing quality products often inspire more confidence, as riders believe they are investing in a reliable and well-engineered system.
Cost: Budget is a critical factor for many riders, and exhaust systems can vary widely in price. Riders typically evaluate the cost in relation to the benefits offered by the exhaust, considering both immediate affordability and long-term value based on performance and durability.

What Installation Tips Should You Follow When Upgrading Your Exhaust?

When upgrading your exhaust, especially for a 1340 Evo, consider the following installation tips:

Choose the Right Exhaust System: Selecting the best exhaust for 1340 Evo is crucial as it should match your bike’s performance needs. Look for systems that enhance horsepower while providing a desirable sound profile, ensuring compatibility with your engine specifications.
Gather Necessary Tools: Before starting the installation, make sure you have all the required tools on hand, such as wrenches, sockets, and a torque wrench. Having the proper tools will help avoid delays and ensure a secure fit during the installation process.
Follow Manufacturer Instructions: Always refer to the manufacturer’s installation guide for specific procedures and torque specifications. Adhering to these guidelines will ensure optimal performance and longevity of your exhaust system.
Use High-Quality Gaskets and Hardware: Replace old gaskets and bolts with high-quality, durable options to prevent leaks and ensure a tight seal. This will enhance the exhaust’s performance and reduce the risk of exhaust leaks that could negatively impact engine efficiency.
Check for Clearance: Before finalizing the installation, check for proper clearance between the exhaust system and other components of the motorcycle. Ensuring adequate space will help prevent heat damage and rattling noises during operation.
Test the Fitment: After installation, start the engine and check the exhaust for any unusual sounds or leaks. A proper fit will produce a consistent sound and allow for optimal exhaust flow, enhancing your bike’s performance.
Consult a Professional if Unsure: If you’re uncertain about any part of the installation process, don’t hesitate to seek assistance from a professional mechanic. Their expertise can save you time and potential issues that might arise from improper installation.

How Can You Maintain Your Exhaust System for Optimal Performance?

Maintaining your exhaust system for the 1340 Evo is crucial for ensuring its longevity and performance. Regular maintenance not only enhances engine efficiency but also minimizes unwanted noise and emissions. Here are key points to consider:

Visual Inspection: Regularly check for signs of rust, leaks, or visible damage. Pay special attention to joints and welds where exhaust gases may escape.
Cleanliness: Use a mild detergent to clean the exterior of the exhaust system. Avoid harsh chemicals that could lead to corrosion.
Check Mounts and Supports: Inspect all mounting hardware to ensure that the exhaust is secured properly. Loose components can lead to vibration, which might cause further damage.
Listen for Unusual Sounds: Be aware of any changes in sound. A louder exhaust could indicate a leak, while a rattling noise may suggest loose parts.
Mid-Season Check-Up: Before the riding season and mid-way through, conduct a thorough check to ensure everything is in optimal condition.
Professional Servicing: If unsure or if damage is detected, consult a professional mechanic to perform a detailed inspection.

Regular maintenance can enhance the performance of your 1340 Evo while extending the life of your exhaust system.

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