Remus Rear Racing Exhaust Silencer for BMW G20 G21 G22 M340i and M440i xDrive
Upgrade your BMW 3 Series G20 G21 M340i or BMW 4 Series G22 M440i xDrive with the Remus rear racing exhaust silencer for an aggressive racing sound, sharper throttle response and reduced back pressure. This premium Remus exhaust delivers the deep, sonorous tone enthusiasts want, with optimised gas flow for performance and a tangible weight saving over the OE rear box. Handmade in Austria from 100% stainless steel with a shot blasted finish, it is a direct-fit, valved rear silencer engineered for serious BMW performance builds.
As part of Remus’ extensive R&D, the full Racing cat-back system recorded gains of up to +19.3 hp and +43.8 Nm with a 5.1 kg weight reduction compared to stock. Figures quoted are for the complete Racing cat-back configuration. This listing is for the Rear Racing Exhaust Silencer.
Why choose this Remus M340i M440i rear silencer
- Aggressive racing sound with refined cruising thanks to OE-style valve control
- Reduced back pressure and optimised flow for performance response
- Lightweight construction vs OE rear silencer
- 100% stainless steel, shot blasted finish, perfect shape and fitment
- Handmade in Austria with a 24-month Remus warranty
- Includes additional original BMW actuator and Y-cable for plug-and-play valve operation via the car’s electronics
Tube diameter
- Original tube Ø 70 mm
- Remus tube Ø 76 mm
What you are buying
Remus Rear Racing Exhaust Silencer for BMW G20 G21 G22 M340i and M440i xDrive, complete with additional OEM BMW valve actuator and Y-cable. Tailpipes are required and sold separately.
Build your Racing cat-back system
To complete a full Remus Racing cat-back system for maximum performance and sound, add:
- Remus Non-resonated Racing GPF Replacement Section
- Remus Connection Tube
- Choice of Remus Tailpipe Set for G20 G21 G22
Compatibility
- BMW 3 Series G20 G21 M340i and M340i xDrive 2020+
- BMW 4 Series G22 M440i xDrive 2021+
Fitting and support
Professional installation recommended. We offer fitting at Nforcd in Warwickshire. Request a quote: Sales@nforcd.com
When fitting Remus racing parts such as sports silencers, cat-back systems and GPF replacement pipes for closed-course use, an ECU remap is advantageous to optimise performance and help prevent a check engine light.
Legal note
No ECE approval. Racing product for off-road and track use only. Not permitted on public roads.
Part number
085120 1500
Warranty
2-year Remus warranty (non-transferable)
Our experience
We have fitted this system in-house and customer feedback on sound quality, build quality and fitment has been excellent. The Remus M340i and M440i rear box unlocks the BMW’s character without drone, delivering a proper motorsport tone when you want it.
Compatibility check before dispatch
We verify fitment before shipping. Provide your UK registration or the last 7 digits of your VIN at checkout to ensure the correct Remus exhaust for your BMW.
Search-friendly terms
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