The all-new BMW M5 G90/G99 Touring have arrived with huge power, aggressive styling, and hybrid-assisted performance — but many enthusiasts agree on one thing: the factory exhaust note feels too muted.
That’s where the Scorpion Exhausts GPF-back system with electronic valves and Ascari carbon fibre tips comes in. Designed specifically for the latest BMW M5 platform, this UK-engineered exhaust system transforms the driving experience with a deeper V8 soundtrack, improved flow, and premium motorsport styling.
Why the New BMW M5 Needs an Exhaust Upgrade
BMW’s latest S68 twin-turbo V8 delivers incredible performance, but stricter emissions regulations and GPF filtration have significantly reduced the raw exhaust character many M enthusiasts expect. Across enthusiast forums and owner discussions, drivers consistently describe the stock G90 M5 exhaust as “muted” or lacking emotion compared to previous generations.
For drivers who want:
- A more aggressive exhaust note
- Better valve-controlled sound management
- Premium carbon fibre aesthetics
- Enhanced throttle response
- OEM-style integration
…the Scorpion GPF-back system is quickly becoming one of the most talked-about upgrades for the new M5 platform.
What Is the Scorpion GPF-Back Exhaust System?
The Scorpion GPF-back system replaces the rear section of the factory exhaust while retaining compatibility with BMW’s original electronic valve controls and drive modes. Unlike cheaper aftermarket alternatives, this system is engineered specifically for the G90 and G99 chassis using high-grade T304 stainless steel construction.
Key features include:
- Twin 80mm equal-length exhaust design
- OEM electronic valve compatibility
- T304 motorsport-grade stainless steel
- Precision TIG-welded construction
- Improved exhaust flow and throttle response
- Premium 100mm Ascari carbon fibre tailpipes
- Direct bolt-on installation
- UK-designed and manufactured craftsmanship
The result is an exhaust system that delivers a more engaging driving experience without sacrificing daily usability.
Ascari Carbon Fibre Tailpipes: Premium Motorsport Styling
One of the standout features of this setup is the Ascari tailpipe design. Scorpion’s Ascari tips use a floating carbon fibre construction with a brushed stainless-steel inner section that helps prevent heat damage and discoloration.
Visually, they complement the aggressive rear-end styling of the new M5 perfectly. The carbon weave adds a modern motorsport-inspired finish that looks significantly more premium than standard factory tips.
For many owners, the visual transformation alone makes the upgrade worthwhile.
Retaining Electronic Valve Control
One of the biggest advantages of the Scorpion system is its integration with BMW’s factory valve functionality.
Drivers can still switch between quieter comfort-focused driving and a more aggressive soundtrack using the car’s original drive mode controls. This means you can enjoy refined cruising during daily driving while unleashing the full V8 character when Sport or Sport Plus mode is activated.
This flexibility is particularly important for:
- Daily-driven M5 owners
- Long motorway journeys
- Early morning cold starts
- Drivers who want performance without constant noise
Enthusiast discussions also highlight how valuable valve control is for balancing aggressive sound with real-world usability.
Sound Quality: Deeper, Sharper & More Emotional
The biggest reason enthusiasts upgrade exhaust systems is sound — and this is where the Scorpion setup shines.
The equal-length GPF-back design produces:
- A deeper idle tone
- Sharper acceleration sound
- Improved V8 character
- More pronounced turbo acoustics
- Reduced muted factory tone
Unlike some excessively loud systems, Scorpion appears to target a refined balance between aggression and drivability. This makes it ideal for owners who want a premium OEM+ experience rather than an over-the-top race-car sound.
According to enthusiast feedback, retaining valve functionality also helps avoid excessive drone during motorway driving.
Performance Benefits
While most owners buy the system primarily for sound and aesthetics, there are performance advantages too.
Scorpion’s freer-flowing exhaust design helps reduce back pressure, improving exhaust gas evacuation and throttle response. The mandrel-bent stainless-steel construction also optimises airflow compared to the restrictive factory setup.
Potential benefits include:
- Faster turbo response
- Sharper throttle feel
- Reduced exhaust restriction
- Weight savings compared to OEM components
- Enhanced engine character under load
Although gains from a GPF-back alone are modest, the system creates a stronger foundation for future tuning upgrades.
Built in the UK with Motorsport Engineering
Scorpion Exhausts has been manufacturing performance exhaust systems in Derbyshire since 1992 and has a long history with BMW M cars.
Their reputation for:
- Durable construction
- Precise fitment
- Motorsport-derived engineering
- High-quality welds
- Lifetime guarantee support
…has helped make them one of the most recognised performance exhaust brands in the UK aftermarket scene.
For G90 and G99 M5 owners, that means confidence in both fitment quality and long-term durability.
Is the Scorpion G90/G99 M5 Exhaust Worth It?
If you own the latest BMW M5 and feel the factory exhaust lacks excitement, the Scorpion GPF-back system is one of the best-balanced upgrades currently available.
It delivers:
- Noticeably improved sound
- OEM-style valve integration
- Premium carbon fibre styling
- Strong UK build quality
- Better driving engagement
- Direct-fit installation
For enthusiasts who want to unlock more character from the S68-powered M5 without compromising refinement, this exhaust system hits the sweet spot between daily usability and motorsport-inspired aggression. With premium construction, OEM integration, and unmistakable V8 presence, it’s an upgrade that transforms both the sound and feel of BMW’s latest super saloon.
