Best 9 into 1 Exhaust Systems for Harley Baggers Reviewed

Finding the perfect exhaust system for your Harley Bagger is about more than just sound; it’s about performance, style, and achieving that perfect custom look. A well-chosen exhaust can significantly improve throttle response and horsepower while giving your bike a distinct personality. With so many options available, from sleek slip-ons to performance-boosting 2-into-1 systems, selecting the right one is a crucial decision for any rider.

This roundup simplifies your search by reviewing nine top-tier exhaust components specifically suited for Harley Baggers. We’ve compiled a list that includes everything from universal mufflers for the budget-conscious builder to premium, model-specific systems from industry leaders like Vance & Hines and Rinehart. Whether you’re aiming for a thunderous roar or a refined rumble, our detailed reviews will help you find the ideal component to complete your build.

Our Top Exhaust System Picks for Harley Baggers

  1. Stretched Bagger Adjustable Exhaust Bracket Set
  2. Universal 1.5-2″ Inlet Hexagon Exhaust Muffler Pipe
  3. Exhaust Muffler with Removable DB Killer (Matt Black)
  4. Tesmirror Motorcycle Exhaust Muffler with DB Killer (Titanium)
  5. Vance & Hines 450 Slip-On Exhaust for Harley Touring
  6. Tesmirror Stainless Steel Slash Cut Exhaust Muffler Pipe
  7. Bassani Road Rage 3 2 into 1 Exhaust Stainless Steel
  8. Rinehart Racing DBX45 4.5″ Chrome Slip-On Mufflers
  9. Vance & Hines Hi-Output 2 Into 1 Cruiser Exhaust

Stretched Bagger Adjustable Exhaust Bracket Set

Stretched Bagger Adjustable Exhaust Bracket Set

This adjustable bracket set is a simple yet vital component for achieving a clean, custom look on your Harley Touring model. Its primary function is to allow you to perfectly center your slip-on mufflers, accommodating sizes up to 4.5 inches. This is particularly useful for riders with stretched saddlebags or those who have made other modifications that require precise exhaust alignment.

The package includes both left and right side brackets, ensuring a symmetrical fit. By providing this adjustability, these brackets help prevent contact between the exhaust and saddlebags, protecting your investment and improving the overall finish of your bike. It’s a practical solution for a common fitment challenge.

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Universal 1.5-2″ Inlet Hexagon Exhaust Muffler Pipe

Universal Hexagon Exhaust Muffler Pipe

This universal hexagon-style muffler offers a straightforward and versatile option for a wide range of bikes, including scooters, ATVs, and motorcycles with pipe diameters between 38mm and 51mm. Its distinct hexagonal shape provides a modern, aggressive aesthetic that stands out from traditional round mufflers. With a length of 390mm, it offers a balanced profile for many applications.

The product is sold with the necessary hardware for installation, as shown in the product images. It is important to note that detailed installation instructions are not included, so this muffler is best suited for individuals with some mechanical experience or access to installation resources.

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Exhaust Muffler with Removable DB Killer (Matt Black)

Exhaust Muffler with Removable DB Killer in Matt Black

This universal slip-on muffler combines an aluminum body with a stainless steel connector for a durable and lightweight construction. The matt black finish gives it a sleek, low-profile look that works well on many custom builds. A key feature is the removable DB killer, which allows you to adjust the sound output to your preference and potentially meet local noise regulations.

With an overall length of 365mm and a 51mm slip-on connection, it is designed to fit a variety of street motorcycles and scooters with exhaust pipes from 38mm to 51mm in diameter. This flexibility makes it a popular choice for riders looking for an affordable way to change their bike’s sound and appearance.

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Tesmirror Motorcycle Exhaust Muffler with DB Killer (Titanium)

Tesmirror Motorcycle Exhaust Muffler in Titanium

This model from Tesmirror offers the same functional design as the matt black version but features a titanium-colored finish for a brighter, more metallic appearance. The construction uses an aluminum body paired with a stainless steel connector, promising resilience against heat and corrosion. The removable DB killer remains a central feature, providing control over the exhaust note.

Sharing the same 365mm length and 51mm connection spec, this universal muffler is applicable for motorcycles and scooters with pipe diameters from 38mm to 51mm. The titanium color option is ideal for riders who want the acoustic flexibility of a removable baffle with a more standout finish.

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Vance & Hines 450 Slip-On Exhaust for Harley Touring

Vance & Hines 450 Slip-On Exhaust

Vance & Hines is a renowned name in the motorcycle performance world, and their 450 Slip-On system is built specifically for 2017-2023 Harley Davidson Touring models. These mufflers feature a large 4.5-inch diameter and are engineered with flush-mounted outlets that align perfectly with the stretched saddlebag cutouts found on many custom Baggers.

The system boasts a sleek matte black finish that complements the bike’s lines without being overly flashy. As a slip-on installation, it is a relatively straightforward upgrade that provides the deep, authoritative sound and quality construction expected from the Vance & Hines brand, while enhancing the bike’s rear-end aesthetics.

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Tesmirror Stainless Steel Slash Cut Exhaust Muffler Pipe

Tesmirror Stainless Steel Slash Cut Exhaust Muffler

This slash-cut muffler from Tesmirror offers a classic cruiser and cafe racer style. Crafted from high-grade steel with a durable chrome plating, it is designed for both appearance and longevity. The universal design means it fits both the left and right sides, simplifying the selection process.

To ensure a broad fitment, it comes with a reducer to accommodate pipes measuring 1-3/8”, 1-1/2”, 1-5/8”, and 1-3/4”. The manufacturer notes that the component is precision-cast for easy installation and a secure fitment, making it a viable option for riders who prefer to handle their own modifications.

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Bassani Road Rage 3 2 into 1 Exhaust Stainless Steel

Bassani Road Rage 3 2 into 1 Exhaust System

The Bassani Road Rage 3 is a full 2-into-1 exhaust system constructed from high-quality stainless steel. This type of system is often chosen for its performance advantages, as it can improve exhaust scavenging and often provides a significant boost in mid-range torque and horsepower.

A key performance feature is its stepped headpipes, which transition from 1 3/4″ to 1 7/8″ and are of equal length. This design is engineered to maximize flow and power output across the RPM range. The long megaphone style gives the bike a distinct, aggressive look that matches its performance-oriented character.

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Rinehart Racing DBX45 4.5″ Chrome Slip-On Mufflers

Rinehart Racing DBX45 Slip-On Mufflers

Rinehart Racing is synonymous with deep, rumbling exhaust notes, and the DBX45 slip-on mufflers are made for 1995 and newer Harley Touring models. These mufflers feature a substantial 4.5-inch diameter and a bright chrome finish that adds a classic, high-impact shine to your Bagger.

The mufflers are complemented by black tradition end caps, creating a stylish contrast that many riders appreciate. As a slip-on system, they offer a direct replacement for stock mufflers, providing an easier installation process and an immediate upgrade to your bike’s sound and visual appeal with a reputable brand.

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Vance & Hines Hi-Output 2 Into 1 Cruiser Exhaust

The Vance & Hines Hi-Output 2 Into 1 system is engineered for riders seeking maximum performance gains from their cruiser. This full system replaces the entire stock exhaust, featuring a design that consolidates two headpipes into one, which is known to optimize exhaust flow and increase power, particularly in the low and mid-range RPMs.

Built by one of the most trusted names in motorcycle exhausts, this system is constructed from high-quality materials to withstand the elements and provide long-term reliability. It delivers the powerful, crisp exhaust note that Vance & Hines is famous for, while its design contributes to a cleaner, more streamlined look on the bike.

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What to Look For in a 9 into 1 Exhaust for Your Harley Bagger

When I started looking for a new exhaust for my Street Glide, I knew I wanted that classic, long, single-pipe look. A 9 into 1 exhaust system, often called a 2-into-1, is a popular choice for a reason. It’s not just about aesthetics; it’s about performance. But you can’t just grab any system off the shelf. There are a few key things I always check before making a decision.

First, let’s talk about materials. Most quality systems are made from either 16-gauge or 14-gauge stainless steel. The 14-gauge is thicker, which generally means a deeper, less tinny sound and better durability. You’ll also see options with ceramic or black coatings. I went with a ceramic-coated header on my last one because it keeps the engine heat down, which is a big plus on long summer rides. If you’re after that raw, industrial look, raw stainless is great, but it will develop a blueish-brown patina over time from the heat.

Performance is the main event. A well-designed 9 into 1 system will significantly improve exhaust scavenging. This basically helps pull the spent gases out of the cylinder more efficiently, which lets your engine breathe better and make more power, especially in the low-end and mid-range torque. This is exactly what you want on a heavy Bagger when you need to pass someone or get up to speed on an on-ramp. Remember, with this kind of power increase, you will absolutely need a fuel management tuner. Running a new exhaust without tuning your bike can make it run lean and hot, which is bad news for your engine.

Finally, consider the sound. This is a personal thing. Some systems are downright obnoxious, while others have a deep, mellow rumble. I always try to find video clips of the exact system on a bike similar to mine to get a real sense of it. Also, check for compatibility with your specific model year and any other accessories you have, like saddlebag guards or certain luggage racks. A beautiful pipe that smacks into your bag every time you hit a bump is a nightmare. Taking the time to research the best 9 into 1 exhaust systems for Harley Baggers will pay off every single time you twist the throttle.

FAQ

Will a 9 into 1 exhaust system improve my bike’s fuel mileage?

This is a tricky one. In theory, a more efficient exhaust can lead to better fuel economy because the engine isn’t working as hard to push out exhaust gases. However, in my experience and from talking with many other riders, you usually don’t see a significant gain. The reason is simple: the improved power and that awesome sound are just too tempting. You’ll likely find yourself enjoying the throttle a bit more, which can actually lead to a slight decrease in MPG. Think of it as paying for performance with a few extra dollars at the pump.

Is a fuel tuner really necessary after installation?

Yes, absolutely. This is non-negotiable. Your bike’s computer is programmed from the factory for the stock exhaust and air intake. When you put on a high-flowing exhaust like a 9 into 1, you’re changing the entire breathing dynamic. Without a proper tune, your engine will run too lean (not enough fuel for the amount of air), which causes higher operating temperatures and can lead to serious engine damage over time. A good fuel tuner corrects the air/fuel ratio, ensuring your bike runs safely and makes the most of its new power.

How difficult is it to install one of these systems myself?

It depends on your mechanical skill level. If you’re comfortable with basic hand tools and have a service manual for your bike, it’s a doable weekend project. The main challenges are dealing with the stock exhaust header nuts, which can be stubborn due to heat cycling, and ensuring you don’t cross-thread the new ones. Having a friend to help hold the heavy muffler in place while you line up the brackets is a huge help. If you have any doubt, though, it’s always worth the money to have a professional mechanic handle the installation.

Are these exhaust systems legal for street use?

This varies by state and local laws. Most aftermarket exhaust manufacturers design their systems to be below the legal sound limit thresholds, but many are not officially “street legal” because they may not carry a specific EPA or CARB exemption stamp. The reality is that enforcement is often based on officer discretion regarding noise. If your system is excessively loud and you’re drawing attention to yourself, you might get a ticket. It’s your responsibility to check your local regulations. A good rule of thumb is to look for systems that are advertised as “for closed course competition,” which is manufacturer code for not being street-legal everywhere.

What’s the main performance difference between a 2-into-1 and a 2-into-2 system?

The core difference is in torque. A 2-into-1 system, which is another name for the best 9 into 1 exhaust systems for Harley Baggers, is generally tuned to maximize low-end and mid-range torque. This is because the single, larger collector and muffler create better exhaust scavenging, which helps the engine breathe more efficiently at lower RPMs. A 2-into-2 dual exhaust system often looks more symmetrical and traditional, but it typically sacrifices some of that low-end grunt for a bit more top-end horsepower. For a heavy touring bike, that extra pulling power from a stop is usually more beneficial.