Performance M
Remus Axle back System Left/Right with Integrated valves using the OE valve control system with 4 Carbon tail pipes Ø 102 mm angled, Titanium internals - 3 Series G80 M3 Competition 375 kW S58B30A 2021-
Remus Axle back System Left/Right with Integrated valves using the OE valve control system with 4 Carbon tail pipes Ø 102 mm angled, Titanium internals - 3 Series G80 M3 Competition 375 kW S58B30A 2021-
Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.
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Transform your BMW M3 G80 soundtrack, flow and look with a premium valved rear section
Give your 2021 onward BMW M3 G80 Competition S58 the sound and presence it deserves with this Remus rear exhaust upgrade. Expect a race-bred tone when the valves are open and a refined, neighbour friendly note when closed, all while keeping full control through the car’s factory electronics. Quad 102 mm carbon fibre finishers with a smart slash cut add an unapologetically motorsport aesthetic.
Why enthusiasts choose this rear section
- Retains factory electronic flap control for seamless integration, no coding required
- Quad 102 mm carbon fibre tailpipe trims provide a bold, OEM plus appearance
- Titanium internals paired with high grade stainless construction for reduced mass and long term durability
- Shot peened finish and precision TIG welds for a premium, corrosion resistant surface
- Improved gas flow for a freer revving feel and reduced restriction under load
- Engineered for an assertive, performance sound in dynamic modes and a civilised tone in comfort
- Austrian craftsmanship with an exact fit to factory hangers and mounting points
Fitment and details
- Vehicle: BMW M3 G80 Competition, S58 3.0 twin turbo, 2021 onward
- Configuration: Axle back rear muffler section with active valves and quad tips
- Tailpipe tips: 4 x 102 mm carbon fibre, slash cut
- Operation: Uses the car’s original valve management for plug and play functionality
- Manufacture: Stainless steel body with titanium internal components
- Part Number: 081021 1400+081021 1500+0046 70CS
Note on installation: the factory rear section requires a clean cut at the specified join point for fitment. This is standard for performance rear box upgrades on the G80 platform.
Real world results
We have installed this system on customer M3 builds and the feedback has been consistently positive. Sharper throttle response feel, a deeper tone without drone in cruising, and stunning tip quality that elevates the rear end. It is a superb balance of everyday usability and weekend theatre.
Perfect for searchers looking for
BMW M3 G80 exhaust upgrade, M3 Competition rear silencer, valved rear box, active flap exhaust, quad tip carbon finishers, 102 mm tips, performance rear section, sports exhaust for S58, rear muffler with valve control, premium stainless exhaust, Austrian made performance system, titanium core rear section.
Professional fitting
For a hassle free install, book professional fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.
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