The 2025 Triumph Daytona 660 marks a thrilling evolution in Triumph’s middleweight sportbike lineup. With its sleek design, high-revving three-cylinder engine, and precise handling, the Daytona 660 has captured the attention of riders worldwide. However, one of the first upgrades most enthusiasts consider is the exhaust system. Whether you’re after better sound, reduced weight, or improved performance, upgrading the 2025 Triumph Daytona 660 exhaust can take your riding experience to the next level.

This guide covers the best aftermarket exhaust options for the 2025 model, what to consider before buying, and how to choose the right system for your needs.

Why Upgrade the 2025 Triumph Daytona 660 Exhaust?

Performance Gains

Stock exhausts are built with emissions compliance and noise regulations in mind, which can sometimes restrict engine performance. A quality aftermarket system can help the Daytona 660 breathe better, especially when paired with a proper tune.

Weight Reduction

OEM exhausts often use heavy steel components. Aftermarket systems usually replace these with lighter materials like titanium or carbon fiber, shaving off several pounds and improving handling dynamics.

Improved Sound

One of the most noticeable benefits of an aftermarket exhaust is the sound. The 2025 Daytona 660’s triple engine has a unique growl that can be significantly enhanced with the right setup.

Aesthetic Appeal

An aftermarket exhaust can also visually enhance your bike. From sleek carbon finishes to race-inspired designs, it’s an easy way to personalize your Daytona.

Types of Exhaust Systems

Before jumping into specific models, it's important to understand the different types of exhaust systems available for the 2025 Triumph Daytona 660.

Slip-On Exhausts

Slip-ons are the easiest and most affordable upgrade. They replace only the muffler section of the exhaust, making installation straightforward. While they don’t offer massive performance gains, they do improve sound and reduce some weight.

Full System Exhausts

Full systems replace the entire exhaust from the headers to the muffler. These provide the best performance improvements and are ideal for track riders or serious enthusiasts. They’re more expensive and may require ECU tuning.

High-Mount vs Low-Mount

High-mount exhausts sit closer to the tail section, often giving a more aggressive look and improving ground clearance. Low-mounts retain a factory-like position, which may be preferred for comfort and luggage compatibility.

Top Aftermarket Exhaust Picks for the 2025 Triumph Daytona 660

After reviewing quality, sound, weight, material, and performance, here are the top aftermarket exhaust options for the 2025 Daytona 660:

1. Akrapovič Racing Line Full System

Highlights:

• Constructed from lightweight titanium

• Dyno-tested performance gains

• Deep, throaty sound

Akrapovič’s Racing Line system is a favorite among performance riders. Known for high-quality craftsmanship and top-tier materials, this exhaust significantly reduces weight and enhances both torque and horsepower. The sound is race-inspired but not obnoxiously loud.

2. SC-Project S1 Slip-On

Highlights:

• Aggressive sound signature

• Carbon fiber and titanium options

• Track-ready performance

The SC-Project S1 offers a no-compromise approach to sound and aesthetics. It’s one of the loudest systems available and provides a serious bark that turns heads. While it's a slip-on, its performance impact is noticeable thanks to reduced backpressure.

3. Arrow Pro-Race Full System

Highlights:

• Stainless steel or titanium construction

• Optional removable dB killer

• Race-proven design

Arrow’s Pro-Race system provides a fantastic balance between weight savings, sound, and performance. The minimalist design complements the Daytona 660’s sleek lines and offers a raw, aggressive note.

4. Yoshimura Alpha T Slip-On

Highlights:

• Compact design

• Rich, sporty tone

• High-quality stainless steel construction

Yoshimura is known for building high-performance exhausts with impeccable fit and finish. The Alpha T for the 2025 Daytona 660 delivers a clean design and a deep, growling exhaust note. It’s also among the most affordable quality slip-ons available.

5. LeoVince Factory S

Highlights:

• Carbon fiber finish

• Tuned for street performance

• Euro 5 compliant

For riders who want to keep their bike street-legal while gaining performance and style, LeoVince offers the Factory S. It’s a stylish, mid-range option that complies with modern emission standards without compromising too much on sound or weight.

Things to Consider Before Buying

Legal Compliance

Before choosing an exhaust, ensure it complies with your region’s noise and emissions laws. Some systems are designed for track use only and may not be street-legal.

ECU Tuning

If you’re installing a full system, it’s often necessary to remap or flash the ECU to ensure proper fueling and avoid engine issues. Some slip-ons can also benefit from a tune, especially when paired with a high-flow air filter.

Installation

Some systems require professional installation, especially full systems that involve removing headers. If you're not mechanically inclined, factor installation costs into your budget.

Budget

Prices for exhaust systems range widely. Slip-ons can start around $400, while premium full systems can exceed $1,500. Know your budget and determine what matters most—sound, weight, or performance.

Maintenance and Longevity

Aftermarket exhausts usually require minimal maintenance, but a few best practices will keep your investment in good condition:

• Check bolts and brackets periodically to avoid loosening due to vibration.

• Clean the surface with non-abrasive cleaners designed for titanium or carbon.

• Inspect for discoloration or signs of excessive heat, which could indicate tuning issues.

Conclusion

Upgrading your 2025 Triumph Daytona 660 exhaust is one of the best modifications you can make to elevate both form and function. Whether you're chasing better sound, more horsepower, or a lighter bike, there's an aftermarket solution to meet your needs.

From the refined engineering of Akrapovič to the aggressive punch of SC-Project, the options are diverse and cater to every type of rider. Just remember to consider your riding style, legal requirements, and budget before making your final decision.

The Daytona 660 is already a high-performing machine, but with the right exhaust system, it transforms into a personalized beast that sounds as good as it rides.