BMW G82/G83 M4 Valved Stainless Steel Catback Exhaust System – OEM+ Straight-Piped Upgrade | Loud, Crackles & Pops | Fits G82 Coupe and G83 Convertible M4 & Competition Models (S58 Engine)

Bring the power of your S58 to life — with an unmistakably aggressive tone.

Transform your BMW G80 or G81 M3 with our valved stainless steel catback exhaust system, crafted for enthusiasts who crave the perfect balance between everyday drivability and track-ready performance.

Featuring remote-controlled valves, you can choose between a refined, comfortable cruise or unleash a raw, ferocious exhaust note with the press of a button. Designed for both OEM+ refinement and true motorsport character, this system delivers a deep, throaty growl that perfectly complements the M3’s S58 engine.

Engineered for the S58 Powerhouse

The S58 twin-turbo inline-six is one of BMW M’s most celebrated engines — blending immense power with race-proven reliability.

Its twin-scroll turbo design produces rapid throttle response and incredible torque throughout the rev range. To make the most of it, a free-flowing catback exhaust allows exhaust gases to escape more efficiently, improving throttle response and producing a sound worthy of an M badge.

Sound & Performance Benefits

Experience the M3’s full potential through precision-engineered acoustics:

• Valved Control System: Choose between a civilized tone for daily driving or open the valves for maximum sound and aggression — all at your fingertips.
• True Dual Design: A true dual-pipe layout from the downpipes back reduces restriction, increasing power and enhancing exhaust velocity.
• Throaty, Sport-Tuned Sound: Stainless steel amplifies the S58’s natural tone, delivering a deep, muscular growl at low RPMs and a roaring, race-inspired scream at higher revs.
• Crackles & Pops on Command: Under load or during gear shifts, experience satisfying backfire notes that accentuate the M4’s performance DNA.

 Why Stainless Steel — Strength, Sound, and Value

Stainless steel exhausts are known for their distinctively rich and throaty tone, making them a favorite among enthusiasts seeking a classic European sports-car sound.

Engineered from high-grade T304 stainless steel, this system offers an ideal balance of affordability, durability, and sound depth — maintaining an OEM-like fit while delivering a more visceral driving experience.

Unlike titanium, which produces a sharp, metallic note, stainless steel delivers a warmer, deeper resonance that’s smoother and more mature. It’s the perfect choice for those who want a refined yet powerful soundtrack without breaking into ultra-premium price tiers.

Built to endure years of spirited driving, stainless steel also resists corrosion and heat cycling, ensuring long-term performance and a timeless aesthetic that matches the M3’s aggressive design.

Premium Stainless Steel Construction

• Stainless Steel Alloy: Offers high tensile strength, resistance to corrosion, and consistent tone even under extreme heat.
• True Dual Catback Layout: Provides optimal exhaust flow while preserving OEM-style fitment and ground clearance.
• Hand-Finished Welds: TIG-welded for strength and precision — each system is crafted with care for a flawless finish.
• OEM+ Design Philosophy: Blends factory fitment reliability with enhanced acoustics and visual appeal.

Complete OEM+ Installation Kit

Everything you need for a straightforward, bolt-on installation is included — no fabrication or cutting required.

• Stainless steel exhaust tips (polished or burnt-finish options)
• Remote-controlled valved system with plug-and-play wiring harness
• Premium clamps, gaskets, and hardware for a secure fit

Your M4 deserves a soundtrack as powerful as its performance.

Our Stainless Steel Valved Catback Exhaust System delivers the ideal combination of deep tone, OEM+ quality, and exceptional value — turning every start-up, rev, and downshift into an event.

For enthusiasts who want the throaty, aggressive character of stainless steel, combined with modern valved control and precise craftsmanship, this is the ultimate upgrade to redefine how your M4 sounds and feels on every drive.

FITMENT: G80 Sedan and G81 Touring M3 including Competition Models.

Please refer to the “Fitment” section in the product description for compatibility details.