Universal 3” Valved Muffler

Flex Priority Valved Performance Muffler

3" Inlet / Outlet - Vacuum Controlled - Wireless Remote Included

The Flex Priority Valved Performance Muffler is engineered for drivers who want full control over exhaust sound and flow without sacrificing reliability. Utilising a vacuum-actuated valve system instead of an electric motor, this muffler delivers consistent, dependable operation in high-heat exhaust environments where electronic valves are prone to failure.

Supplied as a complete system, including a vacuum control unit and wireless remote, this setup allows instant switching between quiet, refined driving and unrestricted performance at the press of a button. Why Vacuum Control?

Vacuum control is widely used in OEM and high-performance applications due to its reliability and simplicity. Compared to electric motor valves, vacuum-actuated systems offer:

Superior reliability in high-temperature environments

No electric motors exposed to heat, moisture, or vibration

Smooth, fast valve operation

Proven long-term durability for street and performance use

This makes it ideal for daily-driven performance vehicles, custom exhaust builds, and applications where reliability matters just as much as sound. Key Features

3" inlet and 3" outlet
Designed to suit high-performance exhaust systems with minimal restriction.

Vacuum-actuated exhaust valve
Reliable and consistent operation under all driving conditions.

Wireless remote control included
Allows easy switching between valve open and closed modes on demand.

Complete vacuum control system included
Supplied with vacuum solenoid, control module, and necessary components for installation.

Straight-through performance flow (valve open)
Maximises exhaust flow, sound, and throttle response.

Refined sound control (valve closed)
Reduced exhaust noise for cruising, cold starts, and long-distance driving.

High-quality stainless steel construction
Built to withstand heat, vibration, and aggressive use. Applications

Performance street vehicles

Custom exhaust fabrication

Valved exhaust conversions

Vehicles requiring selectable exhaust sound control Notes

Professional installation recommended

Intended for custom exhaust systems

Compliance with local noise and road regulations may vary by region