Product Description

The Berklee BS0813 Sports Muffler is designed for performance exhaust systems requiring a twin inlet and twin outlet configuration. Its free-flow design with centre baffle allows efficient exhaust flow while helping reduce excessive noise and improve sound quality.

Product Specifications

• SKU: BS0813
• Inlet / Outlet: 51mm (2.00") twin inlet / twin outlet
• Configuration: Twin Inlet / Twin Outlet
• Body Size: 200mm x 130mm (8" x 4")
• Body Length: 400mm (16")
• Design: Free-flow with centre baffle
• Material: Aluminised Mild Steel
• Fitment: Universal (weld-in)
• 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 by disrupting and smoothing these pulses using internal chambers, perforated tubes, and baffles.

• Chambered / Baffled Mufflers: Use internal baffles to reduce noise and smooth exhaust pulses
• Straight-Through (Free Flow): Maximise flow with a louder, sportier sound
• Hybrid Designs: Combine flow efficiency with improved sound control

The Berklee BS0813 uses a free-flow design with centre baffle, offering a balance between performance and noise control, making it suitable for dual exhaust and higher-flow applications.

Key Features

• Twin Inlet / Twin Outlet: Ideal for dual exhaust systems
• Free Flow with Baffle: Balances performance and sound control
• Large Body Design: Improves noise reduction and tone quality
• Australian Made: Proven Berklee manufacturing quality

Construction

• Material: Aluminised mild steel for durability and corrosion resistance
• Design: Free-flow internal design with centre baffle
• Finish: Aluminised coating

Fitment Notes

• Universal muffler – suitable for custom exhaust systems
• Twin inlet / outlet configuration for dual system applications
• Welding required for installation
• Ensure correct alignment and pipe sizing during installation
• Professional installation recommended

Recommended With

• Exhaust Clamps (51mm / 2.00") – assist with temporary positioning before welding
• Exhaust Pipe (51mm / 2.00") – ideal for custom fabrication
• Mandrel Bends (51mm / 2.00") – maintain smooth airflow
• Exhaust Hangers & Rubber Mounts – reduce vibration
• Exhaust Gaskets – ensure leak-free joins
• Exhaust Sealant – improve sealing during installation

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 BS0813 Sports Muffler

Frequently Asked Questions

Is this muffler loud?
The BS0813 provides a balanced exhaust note with reduced harshness due to its internal baffle design.

How can I make it quieter?
Adding resonators or increasing system length can further reduce noise levels.

Is this suitable for dual exhaust systems?
Yes, the twin inlet and twin outlet design makes it ideal for dual exhaust setups.

Will it fit my vehicle?
This is a universal muffler. Fitment depends on available space and pipe size (63mm / 2.50").

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

Is welding required?
Yes, this muffler is designed for weld-in installation.