Performance M
Remus Axle-Back Valved Exhaust Rear Section for BMW 4 Series G22 Coupe M440i xDrive (B58) 2019+ | Performance Back Box/Muffler Rear Silencer with OE Valve Control | Quad 84mm Straight Carbon Fibre Tips | Stainless Steel
Remus Axle-Back Valved Exhaust Rear Section for BMW 4 Series G22 Coupe M440i xDrive (B58) 2019+ | Performance Back Box/Muffler Rear Silencer with OE Valve Control | Quad 84mm Straight Carbon Fibre Tips | Stainless Steel
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Rear section performance exhaust with valve control and quad 84 mm carbon-finished tips for BMW 4 Series G22 M440i xDrive
Unlock the deep, motorsport tone your B58-powered M440i deserves with this premium rear section upgrade. Built in Austria from full stainless steel with a shot-peened style finish, it retains the car’s original valve operation for everyday refinement and an aggressive soundtrack on demand. Quad 84 mm straight-cut outlets with carbon fibre inserts complete the look with a true OEM-plus finish.
We have fitted this system for customers at MJ Modifications and the feedback has been outstanding – crisper throttle response, cleaner flow and a purposeful sound that suits the G22 coupe perfectly.
Why choose this exhaust for your BMW G22 M440i
- Authentic racing character with a refined note when the valves are closed
- Improved gas flow for reduced restriction and sharper response
- Handcrafted stainless construction for durability and heat resistance
- Lighter than the factory rear box for a small but welcome weight saving
- OEM-like fitment and alignment of the quad outlets
- 84 mm straight-cut tips with carbon fibre inserts for a premium finish
- Keeps your car’s factory flap control for seamless drive mode integration
Fitment and compatibility
- Vehicle: BMW 4 Series G22 M440i xDrive with the B58B30B engine
- Model years: 2019 onward
- Requires cutting of the stock rear section during installation
- Only for cars with the M Sport package and when used together with the BMW OE rear diffuser from the M340i G20 – BMW part number 51 12 8 069 391
Key specs
- Quad outlets: 84 mm diameter, straight cut, carbon fibre insert
- Material: full stainless steel, shot-blasted style finish
- Valve operation: integrates with the vehicle’s original control
- Manufactured in Austria
- Part number: 085020 0000 + 085120 1500 + 0046 83C
What you can expect
- A deeper, sportier tone that comes alive under load
- Low back pressure design for efficient flow
- Precision-built rear section for a neat, factory-style installation
Professional installation
We strongly recommend professional fitting. MJ Modifications in Warwickshire can install this system and set up the valve integration correctly. Request a fitting quote at info@mjmodifications.co.uk.
Searching for BMW G22 exhaust upgrade, M440i performance exhaust, B58 valved rear box, quad carbon tips or stainless rear silencer for 4 Series coupe? This is the premium solution for sound, style and performance.
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