BMW G90/G99 M5 Titanium Valved Catback Exhaust

BMW G90/G99 M5 Titanium Valved Catback Exhaust

This full titanium valved catback is the most complete answer to the G90 M5's greatest weakness, and it addresses two of them at once, the muted factory exhaust note and the considerable weight of the hybrid powertrain.

Titanium is dramatically lighter than stainless steel, and on a system of this size the saving is meaningful, taken from the rear of a car that carries significant battery mass. It also produces a sharper, harder edged tone that suits the S68 far better than the heavily silenced factory system.

An independent Varex valve system, controlled by remote, gives complete authority over the volume. Closed, the car remains as civilised as standard. Open, the current M5 finally sounds like a flagship V8.

Finished in the distinctive heat treated titanium tone that develops naturally through the material, precision TIG welded throughout, and retaining every factory mounting point for a clean bolt on installation.

For an owner who wants the G90 to feel special rather than merely fast, 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 tone than stainless steel, giving the S68 a genuine motorsport character.

Weight Removed Where It Counts

The G90 carries significant hybrid system mass, so a lighter rear section is more valuable on this platform than on any previous M5.

Heat Treated Titanium Finish

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

Precision TIG Welded

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

Direct Bolt On Fitment

Uses the factory mounting locations and hanger positions, with no cutting or welding required.

Performance Benefits

• Significant weight reduction over a stainless steel system
• Increased exhaust flow efficiency
• Sharper throttle response
• Harder edged, more aggressive V8 exhaust 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
• Discreet during electric and low load running

Valves Open

• Sharp, metallic and highly aggressive V8 tone
• Considerable increase in volume under acceleration
• Pronounced crackles and pops when tuned
• Dramatic cold starts
• Motorsport character throughout the rev range

Vehicle Fitment

BMW G90 M5 Sedan (2024+)
BMW G99 M5 Touring (2024+)

4.4L S68 Twin Turbocharged V8 Hybrid Engine

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.