Remus BMW F80 M3 and F82 F83 M4 Exhaust Silencer - Valved Rear Silencer Back Box
Transform the sound and response of your BMW M3 M4 with the Remus stainless steel rear silencer for the F80 M3 Saloon and F82 F83 M4 Coupe and Convertible. This genuine Remus axle-back exhaust replaces the original rear silencer and delivers an aggressive, motorsport-inspired tone with refined cruising manners thanks to dual integrated valves controlled by the factory actuator and vehicle electronics. EEC homologated for road use in Europe, this is the perfect BMW F80 M3 exhaust upgrade and BMW F82 F83 M4 exhaust upgrade for enthusiasts who want quality, performance and sound.
Key search terms: Remus BMW M3 exhaust, Remus BMW M4 exhaust, BMW F80 M3 rear silencer, BMW F82 M4 rear silencer, BMW M3 M4 valved exhaust, BMW S55 exhaust, axle-back exhaust, cat-back upgrade, performance exhaust, back box, rear muffler, EU approved exhaust, ECE homologated exhaust.
What you get
- Remus Sport stainless steel rear silencer without tailpipes - designed to fit with optional Remus tailpipes
- 2 integrated exhaust valves - activation via the original actuator and onboard electronics
- Incl. EEC homologation for road use
Why choose the Remus M3 M4 rear silencer
- Aggressive racing sound with a deep, rich tone and excellent refinement at cruise
- Shot blasted 100 percent stainless steel construction for durability
- Performance increase through reduced back pressure and optimised flow
- Lightweight construction compared to the stock back box
- Perfect OEM-level fitment and plug-and-play valve control
- Handmade in Austria with a 24 month Remus warranty
Flow and sizing
Original tube diameter 65 mm. REMUS tube diameter 70 mm for improved flow and response.
Fitment and compatibility
- BMW 3 Series F80 M3 Saloon - 2015 onwards
- BMW 4 Series F82 F83 M4 Coupe and Convertible - 2015 onwards, including Competition Package
Installation notes
When fitting with the OEM front section, the original exhaust must be cut at the manufacturer-marked cutting point. The Remus silencer is designed to integrate with the factory valve system using the original actuator.
Optional tailpipes for the perfect finish
This rear silencer is supplied without tailpipes. Choose from the following genuine Remus tailpipe options to complete your BMW F80 M3 exhaust or BMW F82 F83 M4 exhaust:
- Stainless Steel Chromed Ø 102 mm
- Stainless Steel Chromed Rolled Edge Ø 102 mm
- Carbon with Titanium Internals Ø 102 mm
- Stainless Steel with Carbon Insert Ø 98 mm
- Black Chrome with Carbon Insert Ø 98 mm
Create a full cat-back system
For maximum sound and flow, pair the Remus rear silencer with the Remus BMW F80 M3 and F82 M4 X-Pipe and Connection Tubes to build a complete cat-back exhaust system. This is a popular upgrade path for S55-powered cars seeking a balanced, valved exhaust with enhanced performance.
Our experience
We have fitted and used Remus M3 M4 exhaust systems on customer cars and our own demonstrations. Feedback has consistently praised the build quality, the OEM valve integration, and the addictive sound character. It is a proven, premium upgrade for the S55 platform.
Fitting service
Prefer professional installation. Book fitting with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Compatibility check before dispatch
To ensure correct fitment, we run a compatibility check prior to dispatch. Provide your UK registration number or the last 7 digits of your VIN at checkout.
Part number
089014 0500
Manufacturer and warranty
Manufactured by Remus. Supplied with a 2 year Remus warranty non-transferable.
Dyno and media
Dyno result on BMW F80 M3 and F82 F83 M4:
Videos
Remus full exhaust system downpipe-back:
Remus silencer with Active Autowerke non-resonated equal length mid-pipe:
Search-friendly terms
BMW F80 M3 exhaust, BMW F82 M4 exhaust, BMW F83 M4 exhaust, Remus M3 exhaust, Remus M4 exhaust, BMW M3 M4 rear silencer, BMW M3 M4 back box, BMW M3 M4 rear muffler, valved exhaust, axle-back exhaust, cat-back exhaust, S55 exhaust upgrade, EU approved exhaust, ECE homologation, stainless steel performance exhaust.