Catless Downpipes with heat Shields For Audi S8 RS6 RS7 (2019-2021) with 4.0 V8 Engine

Unchain the EA825 V8 and let those turbos finally scream without the factory chokehold.

Performance Heat-Shielded Catless Downpipes for Audi RS Q8 (4M/EA825)

The Audi RS Q8 shares its legendary 4.0L Twin-Turbo V8 platform with the Lamborghini Urus. However, the factory downpipes are strangled by dense catalytic cores and restrictive baffling that trap massive heat in the "Hot V" engine valley. These catless downpipes eliminate that bottleneck, allowing for an aggressive exhaust note and significantly faster turbo spooling.

Because the RS Q8 and Urus share the exact same engine architecture, these pipes feature a massive 115mm inlet that mates perfectly to the turbochargers on both vehicles. We’ve integrated OEM-style heat shields to ensure your engine bay stays cool during back-to-back pulls, preventing heat soak in the intake tract. You’ll notice the "luxury lag" vanish, replaced by immediate throttle sensitivity and a raw, mechanical growl.

Why You Need This Upgrade

• Turbo Efficiency: The huge 115mm inlets drastically reduce backpressure, allowing the turbos to spool faster and hit peak boost earlier in the RPM band.
• Thermal Management: Integrated 304 stainless steel heat shields are critical for the "Hot V" setup, keeping radiant heat away from sensitive electronics and plastic components.
• Weight Reduction: These pipes shed substantial weight off the nose of the car compared to the heavy, ceramic-filled factory catalytic converters.
• Exotic Acoustics: Unlocks the true potential of the V8, delivering a deep, guttural roar and audible turbo spool that is usually muffled by stock equipment.
• Precision Fitment: CNC-machined flanges ensure a leak-free seal directly to your OEM exhaust inlet and outlet without fighting the installation.

Technical Specifications

Installation & Fitment Notes

These downpipes are designed as a direct replacement for the factory units, utilizing OEM mounting points and hangers. Please note that removing the primary catalytic converters will trigger a Check Engine Light (CEL). A Stage 2 ECU tune is highly recommended to manage the O2 sensor readings and maximize the power gains from the increased flow.

NOTE: These parts are for OFF-ROAD and RACE USE ONLY. They are not emissions-legal for use on public highways in any state.

Stop restricting your V8—transform your RS Q8 into the supercar killer it was engineered to be.