Product Description

The Berklee BS0804 Sports Muffler is designed for compact performance and street applications. Its high-flow straight-through design allows exhaust gases to pass with minimal restriction, improving engine breathing, throttle response, and overall efficiency.

Product Specifications

• SKU: BS0804
• Inlet / Outlet: 57mm (2.25")
• Configuration: Offset / Offset
• Body Size: 202mm x 102mm (8" x 4")
• Body Length: 350mm (14")
• Design: High-flow (straight-through)
• Material: Aluminised Steel
• Fitment: Universal (clamp-in or weld)
• Manufacture: Australian Made

How Mufflers Work (Technical Overview)

An exhaust muffler controls sound, flow, and backpressure by managing how exhaust gases exit the engine.

As exhaust gases leave the engine, they travel as high-pressure pulses. A muffler reduces noise while maintaining flow using perforated cores and sound-absorbing materials.

• Straight-Through (Free Flow): Maximises airflow with a more aggressive exhaust note
• Chambered Mufflers: Reduce noise and smooth exhaust pulses
• Hybrid Designs: Balance performance and sound control

The Berklee BS0804 features a high-flow straight-through design, making it ideal for applications prioritising performance and minimal exhaust restriction.

Key Features

• High Flow Design: Improves exhaust performance and efficiency
• Centre / Offset Configuration: Flexible installation for custom systems
• Clamp-In Fitment: Can be installed without welding if required
• Compact Body: Ideal for tight installations
• Australian Made: Proven Berklee manufacturing quality

Construction

• Material: Aluminised steel for durability and corrosion resistance
• Design: Straight-through perforated core
• Finish: Aluminised coating

Fitment Notes

• Universal muffler – suitable for a wide range of vehicles
• Ideal for smaller displacement engines and compact builds
• Can be clamp-installed or welded depending on setup
• Ensure correct pipe sizing and clearance
• Professional installation recommended

Recommended With

• Exhaust Clamps – secure installation without welding
• Exhaust Pipe – ideal for custom fabrication
• Mandrel Bends – maintain smooth airflow
• Exhaust Hangers & Rubber Mounts – reduce vibration
• Exhaust Gaskets – ensure leak-free joins
• Exhaust Sealant – improve sealing

Engine Airflow & Exhaust Design

Learn more: Engine Airflow & Exhaust Gas Expansion Guide

Emissions & Compliance Notice

This product is intended for off-road or performance use. Always verify emissions and registration compliance in your state or territory before installation.

What’s Included

• 1 x Berklee BS0804 Sports Muffler

Frequently Asked Questions

Is this muffler loud?
The BS0804 produces a sharper, sportier exhaust note due to its high-flow design.

Can I install it without welding?
Yes, this muffler can be clamp-installed or welded depending on your setup.

Will it fit my vehicle?
This is a universal muffler. Fitment depends on available space and pipe size (57mm / 2.25").

Is this muffler legal for my vehicle?
Check your state or territory regulations to ensure compliance before installation.

What vehicles is this suited for?
Ideal for petrol vehicles, daily drivers, and custom exhaust builds requiring a 57mm (2.25") system.