Remus Rear Silencer Left/Right with Integrated valves using the OE valve control system with 2 Carbon tail pipes Ø 84 mm angled, Titanium internals - 4 Series F32/F36 LCI 440ix 240 kW B58B30A 2018-

BMW 440i F32 F36 LCI Axle-Back Valved Sport Exhaust with Carbon Fibre 84 mm Tips

Transform the character of your BMW 4 Series with a premium axle-back upgrade that keeps your factory flap control fully operational. This twin rear box setup delivers a deep motorsport tone when you want it and a refined cruise when you do not, thanks to plug and play integration with the original valve electronics. Finished with stunning carbon fibre angle-cut tailpipes and titanium inner components for superb heat resistance and weight saving, it is a serious performance-focused rear section for the B58 platform.

Part number: 084119 1500+0026 83CTS

Why enthusiasts choose this rear section

• Rich, dynamic sound profile with factory valve operation for comfort and aggression on demand
• Free-flowing design for reduced restriction and sharper throttle response
• Full stainless construction with a bead-blasted finish for durability and a premium look
• Titanium internals for strength, heat management and lower mass
• Precision fitment rear back box replacement that sits perfectly in the diffuser
• Dual carbon fibre 84 mm angle-cut tailpipes for a motorsport aesthetic
• Handcrafted in Austria with meticulous welds and quality control

Compatibility

• BMW 4 Series F32 Coupe and F36 Gran Coupe, LCI
• 440i xDrive, 240 kW, B58B30A
• Model years 2018 onward
• Important: only suitable for vehicles equipped with GPF OPF petrol particulate filter

What you get

• Left and right rear silencer sections with integrated valve actuators
• Two 84 mm angle-cut carbon fibre tailpipes

Sound and driveability

Expect a deeper, crisper note with a pronounced sport tone under load and a civilised cruise when the valves are closed. The free-breathing layout helps the B58 feel more responsive while maintaining everyday usability. Our team has run this setup and customer feedback has been consistently positive on quality, fit and the addictive soundtrack.

Materials and finish

Constructed from stainless steel throughout with a shot-peened style finish for long-term corrosion resistance. Titanium inner components handle heat cycles and contribute to a lighter rear end. Every unit is hand built in Austria to excellent standards.

Fitting

Professional installation recommended. MJ Modifications in Warwickshire can supply and fit this exhaust upgrade. For a tailored installation quote, email info@mjmodifications.co.uk.

Search-friendly terms

BMW 440i performance exhaust, F32 F36 axle back, 4 Series Gran Coupe xDrive sport exhaust, B58 valved muffler, rear back box upgrade, carbon fibre tips 84 mm, OPF GPF compatible exhaust, stainless steel rear silencer, titanium core, plug and play valve control, BMW 4er Auspuff.