Defender L663 P400 QuickSilver Sound Architect Exhaust System

The QuickSilver Sport System with Sound Architect Valves allows adjusting the sound of a Defender P400 from quiet to loud, with improved throttle response and distinctive exhaust notes.

• The system uses a revolutionary Sound Architect™ Module controlled by a mobile app.
• It provides a civilised sound when valves are closed and a louder, more aggressive sound when open.
• The system offers improved throttle response and distinctive exhaust pops.
• It is described as plug & play with no intrusion into the car's original systems.