Defender OCTA P635 - Quicksilver Sport Exhaust System w/ SoundArchitect - 2025+

The QuickSilver Sport System with Sound Architect™ for the OCTA is the ultimate performance and sound upgrade for this top of line Defender with its 4.4L twin turbo V8.

Loud or Quiet - our system uses our revolutionary Sound Architect™ Module, which is controlled by our new standalone key fob. With the valves shut the QuickSilver system provides a civilised note which is unobtrusive and perfect for long journeys and early starts.

Press the 'Sport' button to switch to valves open and the monstrous side comes alive with volume and pitch increased to deliver that V8 sound that enriches the experience.

Furthermore, in OCTA driving mode, all the pops, crackles and bangs are present on the up-change & overrun, a nice touch.

The QuickSilver system is truly plug & play, it requires no intrusion into the car's OE systems.