How to Choose the Right Exhaust System for Your Bike

Upgrading your exhaust is one of the most satisfying ways to transform your motorcycle, improving both performance and style. But with so many options on the market, how do you know which system is right for your bike and riding style?

At Pro Class Custom Parts, we help riders across New Zealand find aftermarket exhaust systems from premium brands like Freedom Performance, Sawacki Speed, SP Concepts, S&S, Trask Performance, and Vance & Hines. Here’s a guide to help you make the right choice this summer.

 

Understand the Types of Exhaust Systems

It’s important to know the main types of motorcycle exhausts — each has its own characteristics and ideal use.

 

Slip-On Mufflers

Definition: Replaces only the muffler section, leaving headers and catalytic converter in place.

Why riders love them:

• Simple, cost-effective installation

• Noticeably better sound and style

• Modest performance gains

Ideal for riders wanting a cleaner tone and sharper look without a full system overhaul.

2:1 Exhaust System

Definition: Two exhaust headers merge into a single collector and exit through one muffler.

Power Characteristics:

• Better scavenging: Improves gas extraction from cylinders for efficiency.

• Stronger mid-range torque: Especially noticeable between 2,500–5,000 rpm, perfect for most V-twins.

• Smoother power delivery: Linear acceleration with less “choppiness.”

• Slight weight savings: One muffler instead of two.

Sound:
Typically quieter and smoother, producing a deep, single-note exhaust tone.

Ideal for:
Riders focused on usable torque, midrange pull, and touring or performance builds.

Brands to consider: S&S and Trask Performance offer excellent 2:1 options with strong performance and reliable quality.

2:2 Exhaust System

Definition: Each cylinder has its own exhaust pipe and muffler — two headers, two mufflers.

Power Characteristics:

• Less scavenging efficiency: Each cylinder fires independently, reducing midrange efficiency.

• Top-end power: Can be tuned with H- or X-pipes to improve flow and balance.

• Distinct low-end grunt or high-RPM punch depending on setup.

Sound:
Louder, more distinct, with that classic “potato-potato” Harley sound riders love.

Ideal for:
Riders prioritising style, symmetry, and signature sound over peak midrange torque.

Brands to consider: Vance & Hines and Freedom Performance offer a great range of high-quality dual options with both style and reliability.

Match the Exhaust to Your Riding Style

• Touring riders: Prefer smoother, mid-range-focused systems for long-distance comfort.

• Performance riders: Choose lightweight, free-flowing setups for sharper throttle response.

• Cruiser riders: Go for systems that sound great and make a visual statement.

It’s all about matching the system to how you ride, not just what looks or sounds good.

 

Materials and Finish

Exhaust material impacts both performance and aesthetics:

• Stainless Steel: Durable and corrosion-resistant; perfect for NZ roads.

• Polished Chrome or Black Ceramic: Stylish finishes that protect and stand out.

For riders looking to make a visual statement, brands like Sawacki Speed and SP Concepts specialise in stainless steel systems with an edgy, aggressive aesthetic.

 

Performance Tuning

We suggest that exhaust upgrades often require tuning to optimise engine performance. Correct fuel mapping or ECU adjustments ensures smoother throttle response, more power, and prevents engine strain. Brands like Freedom Performance and Trask Performance pair well with professional tuning for peak efficiency.

 

Upgrade Your Ride with Confidence

The right exhaust system transforms the entire riding experience, from throttle response to sound and style. Whether you’re after performance gains, a signature exhaust note, or a show-stopping aesthetic, we have the brands and expertise to help.

 

Need help choosing the right parts?
At Pro Class Custom Parts, our team is here to guide you. Whether you’re unsure what upgrades will suit your bike or want advice on performance, style, or fitment, we’ll help you make the right choice.

Contact the team today!