This ex-demo system has been very briefly used for demonstrator purposes and was installed and removed by our professional technicians.

Some discolouration to the pipework, light scratching, exhaust paste residue, and inner soot may be present on the pipework and silencer casing.

Tail pipe finishers will be supplied as new.

Electronic Valves inc. Sound ArchitectTM Module - uses QS APP (Android and iOS)

Our Sound Architect App hands control of the valves back to the driver for the ultimate experience. When you select Open theyll stay open and when you select Closed theyll stay closed this choice will be remembered even after the cars been turned off and on.

The electronic module included only requires a 12v feed, usually a cigarette-lighter socket. Its Bluetooth controlled on the drivers smart device, and pairing takes just a minute.

The electronics are designed in-house and manufactured for us here in the UK, using local British factories.

A lighter weight system that has more efficient flow and shows a noticeable improvement in throttle response whilst enhancing that sports car sound.

The system uses active valve technology allowing the driver to switch from Stealth to Sport using the Sound Architect by QuickSilver.

Wonderful deep muscle rich sound with pops and burbles in Sport mode.

Retains a civilised 'under the radar' note in Stealth mode.

Stainless Steel mandrel bent tubing.

Improved throttle response.

Retains original tips to keep the look.

Carbon QuickSilver Tips to define the look.