The release of the BMW G90 & G99 M5 Touring set a new benchmark for the modern performance luxury saloon. And naturally, in today's world of underwhelming exhaust notes, one of the first upgrades owners look towards is the exhaust system. Remus, one of the most established names in performance exhaust engineering, has now launched a range of systems specifically developed for the latest M5 platform, and they deliver exactly what you would expect: enhanced sound, reduced weight, and precision-engineered fitment.
At R44 Performance, we’ve already been working closely with the G90/G99 platform at our London HQ, fitting and testing exhaust systems in-house. This gives us a real-world understanding of how these systems perform, sound, and install, not just what’s written on paper.
Available Remus Exhaust Systems for the G90 & G99 M5
Sports Axle-Back Exhaust System
Part Number: 082025 0500LR
Price: From £2,769.65 inc VAT
This is the ideal upgrade for daily-driven G90 and G99 M5 owners looking to unlock a deeper, more aggressive tone while remaining road legal.
- ECE approved and fully homologated for road use
- Refined but noticeably enhanced exhaust note
- Retains usability for UK and EU road driving
Racing Secondary Cat-Back Exhaust System
Part Numbers: 082025 1000 + 082025 0500LR
Price: From £4,385.36 inc VAT
For those wanting even more sound and performance, the racing system transforms the character of the G90/G99 M5 completely.
- Significantly louder, more aggressive exhaust tone
- Reduced back pressure for improved performance
- Designed for track and off-road use only
Important:
This system is not EC approved and is not road legal. Use on public roads may result in MOT failure, emissions issues, fines, or prosecution. R44 Performance cannot be held liable for misuse. This system is strictly intended for off-road use.
Tailpipe Options
Remus offers a range of premium tailpipe finishes to suit different styling preferences:
- 0446 70SGR: Stainless Steel Chrome (Straight Cut)
- 0446 70SGBR: Stainless Steel Black Chrome (Straight Cut)
- 0446 70CSRX: Carbon Fibre with Titanium Internals
- 0448 70GT: Titanium (Scotched Finish)
- 0448 70GTB: Black Painted Titanium
Each option is designed to perfectly complement the aggressive rear styling of the G90 and G99 M5.
Key Features & Benefits
- Aggressive, signature Remus exhaust tone
- Shot-blasted surface finish
- Manufactured from 100% stainless steel
- Reduced back pressure for improved engine efficiency
- Lightweight construction (approx. -4kg vs OEM)
- Precision engineering for perfect fitment
- Handmade in Europe
- Backed by a 24-month manufacturer warranty
Installation Notes
- Requires cutting of the OEM exhaust system
- Professional installation is strongly recommended
At R44 Performance, we offer full installation services at our London workshop. Our team has hands-on experience with the G90/G99 M5 platform, ensuring your exhaust is fitted correctly and performs as intended.
Why Buy from R44 Performance?
- Extensive hands-on experience with the G90 & G99 M5
- Trusted UK supplier of genuine Remus exhaust systems
- Worldwide shipping available
- Expert customer support and product guidance
- In-house installation available at our London HQ
If you're unsure which system is right for your build, our team is on hand to help — whether you're building a refined daily or a full track-focused setup.
Sound & Driving Experience
The Sports Axle-Back system delivers a deeper, richer tone without overwhelming the cabin - ideal for daily use while still enhancing the character of the M5.
The Racing system, on the other hand, is unapologetically aggressive. It unlocks the full acoustic potential of the G90/G99 platform, delivering sharper throttle response sound and a far more raw driving experience.
FAQs - Remus G90 & G99 M5 Exhaust Systems
Is the Remus Sports Axle-Back exhaust road legal?
Yes — the axle-back system is ECE approved and fully homologated for road use in the UK and Europe.
Is the Racing exhaust system road legal?
No - the racing system is not EC approved and is strictly for off-road use only.
Do I need to modify my OEM exhaust?
Yes - installation requires cutting the original exhaust system.
Will this exhaust fit both G90 M5 and G99 M5 Touring?
Yes - these systems are designed specifically for both the G90 saloon and G99 Touring models.
Can R44 Performance install this exhaust?
Yes - we offer professional installation at our London workshop with a team experienced in the G90/G99 platform.
Does the exhaust improve performance?
Yes - reduced back pressure can improve engine efficiency and overall performance, particularly on the racing system.
Final Thoughts
The Remus exhaust range for the BMW G90 and G99 M5 offers a well-balanced selection depending on your goals. Whether you want a road-compliant upgrade with enhanced sound or a full racing setup that transforms the car’s character, Remus delivers with precision, quality, and proven engineering.
For availability, fitting, or expert advice, contact the R44 Performance team, and take your G90 or G99 M5 to the next level.
