Remus 049010 0500LR & 049010 0400 Axle-Back Sport Exhaust System with Valves and Connecting Pipes

The Remus 049010 0500LR is a premium valved axle-back sport exhaust system paired with optional connecting pipes (049010 0400), engineered for high-performance Audi RS5 and RS4 B8 models equipped with the 4.2L V8 engine. Crafted from 100% stainless steel, this system delivers a deeper, more refined exhaust tone while maintaining near-stock decibel levels under normal driving conditions.

Key Features:

• Vacuum-operated variable valves — activated by the vehicle's original actuators via factory onboard electronics, allowing seamless transition between a refined street tone and an aggressive sport sound
• Dual left/right sport exhaust mufflers — matched pair designed to work as a complete axle-back system
• Optional connecting pipes (049010 0400) — when paired with the connecting pipes, no cutting of the original exhaust system is required for installation
• 100% stainless steel construction — shot-blasted surface finish with flow-optimized internals for maximum durability and corrosion resistance
• Robotic MIG/TIG welding — precision welds for long-term reliability and structural integrity
• Manufactured using CNC-controlled pipe bending, hydroforming, and laser cutting for exceptional fitment accuracy
• Sound-chamber tested and tuned for the specific engine profile of the 4.2L V8
• ISO 9001 certified manufacturing process

Remus is an Austrian-founded, globally recognized leader in performance exhaust systems and an OEM supplier to BMW, Mercedes-AMG, Porsche, and Ducati. Each system undergoes rigorous acoustic and back-pressure testing in Remus's in-house sound chamber and 4WD dynamometer facility to ensure the perfect balance of performance and sound. The 049010 0500LR with connecting pipes 049010 0400 is a bolt-on upgrade that delivers measurable performance gains without compromising everyday drivability.