Audi B9/B9.5, RS4/RS5 Titanium Valved Catback Exhaust

Audi B9/B9.5 RS4/RS5 Titanium Valved Catback Exhaust

This is the definitive exhaust upgrade for the Audi RS4 and RS5, a full titanium valved catback that transforms both the sound and the weight of the car in a way no stainless system can match.

Titanium is dramatically lighter than stainless steel, and across a system this size the saving is significant, taken from the rear of the car where it matters most for balance. It also produces a distinctly sharper, harder edged exhaust note, the sound associated with factory motorsport systems.

An independent Varex valve system, controlled by remote, gives complete authority over the volume. Closed, the car stays civilised for daily use. Open, the 2.9L twin-turbo V6 is given a genuinely ferocious voice.

The system is finished in the burnt titanium tone that develops naturally through the material, with high performance TIG welding throughout and factory mounting points retained for a clean bolt on installation.

For an owner who wants the RS4 or RS5 to sound and feel like the flagship it is, this is the system to fit.

Key Features

Independent Varex Valve System

Rather than reusing the restricted factory valves, this system operates its own dedicated valve assembly with complete travel in both directions. Sealed when closed for quiet running, and fully unobstructed when open for maximum flow and volume. Switch between a refined daily-driving experience and an aggressive performance exhaust note at the touch of a button.

Full Titanium Construction

Genuine titanium alloy throughout, delivering a substantial weight saving over stainless steel from the rear of the vehicle.

Sharper Titanium Exhaust Note

Titanium produces a harder, more metallic and more aggressive tone than stainless steel, closer to a factory motorsport system.

Burnt Titanium Finish

The heat treated colouring characteristic of the material, giving the system a distinctive appearance under the car and at the tips.

High Performance TIG Welding

Titanium demands exacting weld control, and every joint is executed to withstand sustained extreme exhaust gas temperatures.

Direct Bolt On Fitment

Designed for the B9 platform using the factory mounting locations and hanger positions.

Performance Benefits

• Significant weight reduction over a stainless steel system
• Increased exhaust flow efficiency
• Sharper throttle response
• Harder edged, more aggressive twin-turbo V6 tone
• Weight removed from the rear of the vehicle
• Ideal supporting modification for downpipes and ECU tuning

Performance gains may vary depending on ECU calibration and supporting modifications.

Sound Characteristics

Valves Closed

• Refined but noticeably harder edged than stainless
• Controlled drone for comfortable daily driving
• Civilised enough for everyday use

Valves Open

• Sharp, metallic and highly aggressive V6 tone
• Considerable increase in volume under acceleration
• Pronounced crackles and pops when tuned
• Dramatic cold starts
• Motorsport character throughout the rev range

Vehicle Fitment

Audi B9 / B9.5 RS4 Avant (2017-2023)
Audi B9 / B9.5 RS5 Coupe (2017-2023)
Audi B9 / B9.5 RS5 Sportback (2017-2023)

2.9L Twin-Turbocharged V6

Which Option Do I Need?

Select the body style of your car. The RS4 Avant, RS5 Coupe and RS5 Sportback have different rear sections, so the exhaust is not interchangeable between them.

If you are unsure, send us your VIN and our team will confirm the correct system before dispatch.

Please Note

Professional installation is strongly recommended.

Titanium develops a natural variation in colour through heat cycling. This is characteristic of the material and not a defect.

Exhaust sound characteristics may vary depending on supporting modifications such as downpipes and ECU tuning.

Why Choose Proven Performance Parts

We specialise in high-performance parts for European vehicles — including Volkswagen GTI & R models, Audi S/RS platforms, and BMW M vehicles. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.