Top 5 Aftermarket Exhaust Systems to Boost Motorcycle Performance

If you’re a motorcycle enthusiast, you know the thrill of squeezing every bit of power and character from your machine. One of the easiest and most impactful upgrades? The exhaust system.

Whether you’re chasing horsepower, weight reduction, or that deep, aggressive growl, aftermarket exhausts are where performance meets personality. But with so many brands out there, which ones truly deliver?

In this article, we’ll explore the top 5 aftermarket exhaust systems that not only boost performance but also enhance the sound, aesthetics, and overall riding experience. Each option is backed by solid reputations, real-world rider feedback, and engineering that delivers results.

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Why Upgrade Your Motorcycle Exhaust?

Before diving into the list, let’s understand why swapping your stock exhaust is more than just a cosmetic upgrade:

• Increased horsepower and torque: Aftermarket systems reduce back pressure and improve airflow, allowing your engine to breathe better.

• Weight reduction: Stock exhausts are usually heavier due to emissions controls and sound-deadening materials.

• Sound enhancement: A custom exhaust can transform your bike’s tone from a whisper to a roar.

• Custom look and feel: These systems often come with premium finishes—carbon fiber, titanium, polished aluminum—that elevate your bike’s aesthetics.

Now, let’s get into the top performers.

1. Akrapovič Exhaust Systems – Precision Meets Performance

Best For: Riders who want a blend of top-tier engineering, sound tuning, and power gains.

Akrapovič, based in Slovenia, has made a name for itself in MotoGP and WSBK, and it brings that racing pedigree to its street offerings. Their exhausts are precision-crafted, often using titanium and carbon fiber, and are dyno-tested to ensure real-world performance.

What Makes It Stand Out:

• Weight savings of up to 10 lbs compared to stock

• Deep, clean sound without being obnoxiously loud

• Plug-and-play installations for most sportbikes

• Available in slip-on and full-system configurations

Case Study: Riders of the Yamaha R1 report up to a 6% horsepower increase with the Akrapovič Racing Line system, along with sharper throttle response and smoother power delivery.

2. Yoshimura Exhaust Systems – The Street-to-Track Sweet Spot

Best For: Riders seeking performance with a slightly aggressive tone without crossing into “wake-the-neighbors” territory.

Yoshimura has a long-standing legacy in the U.S. and Japan, known for its work with Suzuki in superbike racing. Their systems combine track-tested engineering with everyday rideability, making them a favorite among commuters and weekend warriors alike.

Why Riders Love It:

• Signature growl that gets attention without breaking sound limits

• Smooth midrange torque gains

• Affordable options for both full systems and slip-ons

• Known reliability and build quality

One popular model, the RS-5 Slip-On, is a staple upgrade for bikes like the Honda CBR series and the Kawasaki Ninja 650. Many users report improved throttle response and less engine heat.

3. Two Brothers Racing – For That Deep, Muscle-Bike Sound

Best For: Riders chasing an aggressive exhaust note and head-turning style.

Founded in California, Two Brothers Racing (TBR) focuses heavily on the American sport and cruiser market, though they make systems for a wide range of bikes. If your goal is to add bark to your bike’s bite, TBR is worth a look.

What Sets Them Apart:

• Signature sound—deep, throaty, and unmistakable

• Available in shorty, carbon, and black series models

• Aggressive, eye-catching design

• Relatively easy install with no remapping required in many cases

Real-World Example: Harley Sportster owners often praise the Comp-S 2-into-1 exhaust for its loud, bass-heavy tone and noticeable bump in torque.

4. SC-Project – Italian Flair with Track-Racing DNA

Best For: Riders who crave high-revving performance and race-spec aesthetics.

SC-Project is a go-to brand in the Moto2 and MotoGP circuits, and their street offerings reflect that same track heritage. Made in Italy, these systems are engineered for high RPM power delivery, lightweight construction, and sound that’s as precise as it is thrilling.

Highlights:

• Ultra-lightweight titanium and carbon builds

• Race-inspired shorty designs

• Loud, crisp exhaust note tuned for sportbikes

• Often includes removable dB killers

Example: On the Triumph Street Triple 765, the SC-Project CRT slip-on not only reduces weight significantly but also delivers a raw, raspier tone that many riders equate with the full Moto2 experience.

5. Arrow Exhaust – Balanced Power and Price

Best For: Riders wanting solid performance without spending superbike-level money.

Arrow is one of the best-kept secrets in the exhaust world. Based in Italy, they’re a favorite among riders who want a reliable mid-tier option with some of the same performance benefits as higher-end brands.

Why It’s a Solid Choice:

• Competitive pricing without sacrificing build quality

• Great for naked bikes and adventure models

• Excellent midrange power boost

• Sleek, understated design that doesn’t scream “aftermarket”

User Feedback: Owners of bikes like the Yamaha MT-07 or KTM Duke 390 often turn to Arrow for a noticeable performance bump without diving into premium pricing. Many also report better fuel efficiency due to improved exhaust flow.

Things to Consider Before Choosing an Exhaust

Upgrading your exhaust isn’t just about picking the loudest or lightest option. Keep the following in mind:

• Local laws and emissions regulations: Some systems may not be street legal, especially in places like California.

• ECU remapping: Some full systems require fuel remapping to optimize air-fuel ratios.

• Material and weight: Titanium is lighter than stainless steel but more expensive.

• Aesthetic fit: Choose an exhaust that complements your bike’s style—be it sleek, aggressive, or minimalist.

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Final Thoughts: What’s the Best Exhaust for You?

There’s no one-size-fits-all answer. It depends on your priorities:

• If you want elite performance and sleek design, go with Akrapovič.

• Craving daily rideability with street cred? Try Yoshimura.

• Want loud and proud American muscle? Two Brothers Racing is your match.

• For track vibes and high-rev zing, consider SC-Project.

• And if you’re after value and versatility, Arrow delivers more than you'd expect.

Actionable Takeaway:

Before hitting "buy now," ask yourself:

• What kind of sound do I want?

• Do I care more about weight or power?

• Am I okay with tuning my ECU?

• Is this exhaust street-legal in my state?

Once you’ve figured that out, an aftermarket exhaust might just become your favorite mod—not just for the performance gains, but for the way it transforms your connection with your bike.