Mercedes Benz W463A G63 Stainless Steel Valved Exhaust

Let the G63 sound like the V8 it is. A stainless valved rear system with a valved muffler on each side, the signature quad tips and the wireless remote kit supplied.

The hand-built four-litre biturbo V8 is one of the best-sounding engines AMG makes, and the factory G63 system spends most of its effort keeping that under wraps. This system replaces the rear section with mandrel-bent stainless and its own valve assemblies, so the car stays civil around town and turns properly loud the moment you want it to.

Manufactured from 304 stainless steel with mandrel bends and TIG welds throughout, supplied complete with the valve assemblies, remote kit and all hardware.

Key Features

Electronic Valve Control

Each muffler carries its own valve assembly with full travel in both directions. Closed for a quieter OEM+ drive, fully open for the hard side-exit bark the G63 is known for.

Wireless Remote Kit Supplied

Valve operation is handled by the supplied remote, so the volume is yours to choose rather than the car's.

304 Stainless Steel Construction

Mandrel-bent 304 stainless throughout for consistent bore, corrosion resistance and long service life.

Signature Quad Tips

Three-outlet side tips per side in a black finish, mounted in the factory positions so the G63 keeps its unmistakable side-exit look.

Direct Bolt-On Fitment

Fits at the factory mounting points and hangers. No cutting and no fabrication.

Performance Benefits

A deeper, louder V8 note with the valves open
Near-standard volume with the valves closed
Reduced restriction through the rear of the system
Sharper throttle response
Reduced weight over the factory rear section
A strong foundation for a tuned M177

Sound Characteristics

Valves Closed

Refined and comfortable cruising sound
Minimal cabin drone
Ideal for everyday driving and long-distance trips

Valves Open

Deep, thunderous V8 tone from the side exits
Increased exhaust volume
Heavier overrun crackle and turbo acoustics
Aggressive cold starts

Vehicle Fitment

Mercedes-AMG G63 (W463A, 2018 onwards)

4.0L Twin-Turbocharged M177 V8 Engine

Supplied as a left and right pair with the quad tips, valve assemblies, hangers and hardware.

Please Note

This is the rear muffler section. The mid pipes and downpipes are not included, and the factory items are retained unless you are fitting ours.

Professional installation is recommended. Exhaust sound will vary depending on whether the factory or aftermarket downpipes are fitted.

Check your local road rules before fitting. Exhaust noise requirements vary by state and a vehicle must remain compliant for road use.

Why Choose Proven Performance Parts

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