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Patented muffler technology
Varex™ mufflers use our patented* technology to combine both the design of the stock muffler and the performance muffler into one single compact unit. A sophisticated butterfly valve mechanism is implemented to redirect the exhaust gas flow and vary between the two. For higher sound level, the exhaust flows are directed through the opening path and produce maximum power with a robust sound level (or the “sports car note”) and near-zero resistance.
Whilst for lower sound level, the exhaust flows are directed through the chambered path (similar design with the stock muffler) and produces a minimum sound level that gives you the best in-car comfort. The angle of the valve is also controllable, which can be adjusted to stop at various points between sports mode and silence mode. This gives you further freedom to set the optimal sound level according to your desired preference.
*Patent No.:US 8469142,CAN 2659777, EU 2049777 AUS 2007283449, NZ 574642 CHN ZL200780033671.6.
VAREX™ Can be Controlled to Suit Your Needs
Setting your Varex™ muffler in ‘Street mode’ enables lower sound levels and maximum discretion, as exhaust gases are directed through a chambered path as would a ‘stock’ muffler
For greater power output and sound level, exhaust gases are directed through the opening path and produce maximum power with a robust sound level (or the ‘sports car’ note) and near-zero resistance.
As the angle of the valve is adjustable, it can be adjusted to stop at various points between sports mode and silence mode. This gives you further freedom to set the optimal sound level according to your desired preference.
Race Mode


In Between
As the angle of the valve is adjustable, it can be adjusted to stop at various points between sports mode and silence mode. This gives you further freedom to set the optimal sound level according to your desired preference.
Street Mode

YOU’RE IN CONTROL WITH VAREX™
- Easy Installation, no hard-wiring required (in-car 12v socket included) for plug and play functionality
- Durable construction with water-resistant plugs
- Dual mufflers control harness available
- Stylish remote key pad

VAREX™ KIT INFORMATION
VAREX™ Motor
VAREX™ Motor and gear sets are located on the top of the muffler, they work as an integrated unit to drive the butterfly valve open and close.The dimensions of the motor and gearbox are typically manufactured to 4.5cm(H) x 10cm(W) x 20cm(L). * Dimensions may vary depending on the model.
VAREX™ CONTROL KIT

VK01
- Water resistant plug (connected to Varex™ Motor)
- Power plug
- Remote Control Keypad
- Control module
VK02
- Dual control kit. It shares the same components as VK01 except having two connecting Plugs for dual VAREX™ mufflers.

VKSB01
- SmartBox Bluetooth Exhaust Controller
- Programmable via iOS and Android App
- Precise Manual Control (down to 1% Valve position accuracy)
- Automatically Controlled by RPM, Throttle Position and Vehicle Speed
- “One-touch exhaust drone delete” Function
- Automatically Triggered by Geolocation