Land Rover Defender P425 V8 90, 110 OR 130 - SUPERSPORT System with Sound Architect™ (2025 on)

The QuickSilver Sport System with Sound Architect Valves is a step up from our popular Sport system and designed for enthusiast who wants to maximise the driving experience.

Replacing the mid section silencer with an X-Pipe not only mixes the banks of the V8 but gives a crisper more robust tone throughout the rev range.  

Loud or Quiet - our system uses our revolutionary Sound Architect Module, which is controlled by your mobile phone via the QuickSilver App. It could not be easier.
With the valves shut the QuickSilver system provides a civilised note which is unobtrusive and perfect for long journeys and early starts.

Switch to valves open and the monstrous side comes alive with volume and pitch increased to deliver a pure muscle car sound that enriches the experience.

Furthermore, in dynamic 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 cars's OE systems and is completely reversible (on resale?).  

The new QS Sound Architect® remote valve control system gives you full command of the sound. Our push-button fob can be mounted within the vehicle or used outside the vehicle if desired.

Its binary functionality offers two distinct sounds to suit your environment. Our default ‘Sport’ mode offers the full experience with a deeper robust note and utilises the optimum flow of the exiting exhaust gases. With our ‘Refined’ mode, our exhaust harnesses the tone, offering a more civilised note when, and if it’s required.

Even better is that like our exhausts, this is a simple install. Just feed the valve cables through the spare wheel well to the rear section, plug the power cable into the 12v in the boot, and you’re away!

This style of valve control’s been requested a lot in the past, and we’re excited to finally offer this – the perfect sound is now just a button press away.

• Stainless Steel mandrel bent tubing.

• Improved throttle response.

• Fantastic burbles, crackles and pops on the overrun.

• Civilised to Muscle car in an instant.

• The 4 x straight carbon fibre tail pipes are a huge improvement to the rear view. 

•  Plug & play 12v power source

•  Two fobs

•  Sound module

•  All required leads and batteries

•    Suitable for three pin SPS valves

•    Two distinct sound modes, ‘Sport’ and ‘Refined’