Milltek Sport has once again raised the bar with its latest iteration of the Audi RS4 B7 exhaust system, marrying modern silencer technology with an innovative active centre H-pipe to deliver a transformative sound experience. Designed specifically for the beloved 4.2-litre, 414bhp naturally aspirated V8 powerhouse, this V2 upgrade sets a new benchmark in performance and acoustic excellence for one of Audi’s most iconic ‘modern classics.’
A Modern Twist on a Modern Classic
The RS4 B7 has long held a special place in the hearts of enthusiasts — a rare breed of Audi that combined sharp dynamics with a naturally aspirated V8 engine that demanded to be heard. Responding to growing demand from this passionate community, Milltek’s engineers have reimagined the exhaust system with contemporary technology inspired by the latest Audi RS models.
Central to this evolution is the introduction of a vacuum-operated active centre H-pipe, which works in harmony with the exhaust’s rear valves, already familiar to RS4 drivers through the original Audi valve control system. This intelligent design creates a marked difference in exhaust note and performance, controlled seamlessly via the RS4’s Sport mode button on the steering wheel.
Dual Personality: Silky Smooth or Wild and Loud
Kev Hall, Milltek’s Technical Operations Manager, perfectly describes the system’s character as “Jekyll and Hyde.” When Sport mode is disengaged, the active H-pipe opens, allowing exhaust gases from each bank to mix smoothly while the rear valves close, routing gases through the silencers to produce a refined, understated tone. This silky smooth delivery suits everyday driving, providing subtlety without sacrificing the RS4’s distinctiveness.
Flip Sport mode on, and the experience shifts dramatically. The active H-pipe valve closes, separating the exhaust flow into two distinct paths. Simultaneously, the rear silencer valves open, offering a near-unrestricted exhaust route that bypasses the silencers, unleashing the RS4’s raw, aggressive V8 roar. The result is a thrilling, full-throttle soundtrack that brings the engine’s character vividly to life — all at the simple push of a button.
Premium Craftsmanship Meets Iconic Design
True to Milltek’s reputation, the entire V2 exhaust system is crafted from high-grade T304L stainless steel, promising exceptional durability backed by a lifetime warranty for the original purchaser. The package includes left and right centre resonators, silencers with valved outlets, rear brackets, and all installation hardware, ensuring a straightforward fitment experience.
Visually, the system honors the RS4’s heritage with oval exhaust tips mirroring the original Audi setup, offered in four stunning finishes: Polished Stainless, Cerakote Black Stainless, Brushed Titanium, and Burnt Titanium. This attention to detail ensures the system looks as impressive as it sounds, perfectly complementing the RS4’s aggressive yet elegant styling.
Compliance and Choice
For European RS4 owners requiring an EC-approved replacement system, Milltek continues to offer the original V1 exhaust. This option delivers a sportier tone while adhering to official noise regulations, ensuring compliance without sacrificing performance.
Final Word from Milltek
Kev Hall encapsulates the ethos behind the V2 system: “The RS4 B7 was one of the first Audis that felt truly dynamic with a V8 that needed to be heard. Our new exhaust system enhances that sound and performance, offering drivers a system that’s both sophisticated and exhilarating. The technology mirrors what you find on today’s Audi RS cars, making it a perfect fit for this ‘modern classic.’”
Discover the full range of Milltek’s exhaust systems, from ‘modern classics’ to the latest pickups, vans, and off-roaders, and find your nearest dealer at www.millteksport.com.
With this V2 system, Milltek not only celebrates the legacy of the Audi RS4 B7 but pushes it boldly into the future — delivering a thrilling blend of heritage, innovation, and uncompromising performance sound that today’s discerning drivers demand.
