Aston Martin DBX V8 Valved Exhaust System (2020+)

The Aston Martin DBX V8 exhaust in detail.

The brand’s SUV, the DBX V8, launched in 2020, receives a 4.0-litre twin-turbo V8 from Affalterbach but retuned at Gaydon, right down to its exhaust: 550 hp and 700 Nm. The factory voice is already expressive, but recent emissions standards have added their filters, and part of the character remains locked away.

With the valves open, the Rog valved cat-back unleashes this V8: a deep rumble at idle, an authoritative climb, refined bangs on the overrun. With the valves closed, the SUV regains the hushed elegance you expect from an Aston, for family journeys. The more powerful DBX707 has its own page, and your VIN is checked before manufacturing.

Under an SUV of this size, a lift is still recommended: the exhaust fits in about two hours, no welding, and the factory valve control is retained if the DBX has one, otherwise the Rog remote operates them.

Here the “Manifold” option sells the downpipe, which follows the turbos and contains the catalytic converter. Without an ECU remap, it affects the voice and the weight; with one, it becomes a power lever whose result depends on the tune. For an SUV that does the school run as much as it devours motorways, the 200-cell version keeps emissions control, the 100-cell will be accepted or refused depending on the car and the rules in your country, and the decat part only makes sense on track, an extremely rare job for a DBX. The system itself can be ordered in 304 stainless steel, robust against salt, or in titanium, around 40% lighter for the same design.