Performance M
Remus Cat back System Left/Right with Integrated valves using the OE valve control system with 4 tail pipes Ø 84 mm straight, carbon insert - 3 Series G20/G21 M340i xDrive 275 kW B58B30B 2019-
Remus Cat back System Left/Right with Integrated valves using the OE valve control system with 4 tail pipes Ø 84 mm straight, carbon insert - 3 Series G20/G21 M340i xDrive 275 kW B58B30B 2019-
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Premium sports exhaust upgrade for BMW 3 Series G20 G21 M340i xDrive 2019 onwards
Transform your B58-powered M340i with a high quality twin-exit rear system featuring quad 84 mm straight outlets with carbon fibre inserts. This valved performance system keeps your factory flap control, delivering a refined cruising note with a deep motorsport tone when you want it. Built from robust stainless steel with a shot-peened style finish and crafted in Austria for exceptional quality.
Why enthusiasts choose this system
- Retains OEM valve electronics for plug-in convenience and on-demand sound control
- Lower restriction design for improved flow and sharper throttle response
- Durable stainless construction with a premium, bead-blasted look
- Quad 84 mm straight tips with carbon fibre detailing for a purposeful rear end
- Precision fit with factory-style alignment for a clean, OEM-plus appearance
Fitment details
- Vehicle: BMW M340i xDrive, G20 saloon and G21 touring, B58B30B, 275 kW, 2019 onward
- Styling: suits vehicles with the M Sport package and the genuine rear diffuser specific to the M340i G20, BMW part number 51 12 8 069 391
- Installation: the stock rear section requires cutting to fit this system
OPF GPF information
This exhaust replaces the particulate filter assembly. Removing the OPF GPF can illuminate the engine warning lamp. An ECU calibration is typically required to code out the relevant monitoring.
Real world results
We have installed this setup for customers at MJ Modifications and the feedback is consistently positive. Owners love the richer six-cylinder character, the tasteful carbon tailpipes and the way the valve control keeps things civil for daily use while sounding exciting under load.
Part number
085020 1000 + 085020 0000 + 085020 1500 + 0046 83C
Professional fitting
Want it fitted properly the first time Our team at MJ Modifications in Warwickshire can supply and install this system, and arrange the required ECU solution where applicable. Request a quote at info@mjmodifications.co.uk.
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