Remus Valved Cat-Back Exhaust (Catback) for BMW 8 Series M8 F92 2019+ S63 | Non-Resonated OPF/GPF Delete | Quad 102mm Carbon/Titanium Tips | Dual Exit L/R Stainless | Fits M8 Coupe/Competition xDrive

Transform your BMW M8 F92 soundtrack and response with a premium European-built performance exhaust. This dual-exit, valve-controlled cat back is engineered for the S63B44B V8 and delivers a ferocious motorsport tone, sharper throttle feel and a serious visual upgrade thanks to four angled 102 mm carbon fibre tailpipes with titanium internals. It retains factory electronic valve operation for genuine cabin-controlled loud to quiet driveability.

Handcrafted in Austria with a full stainless construction and a bead-blasted finish, this free-flowing system reduces restriction and weight versus the stock assembly while maintaining precise, direct-fit installation. The result is a deeper idle, crisp upshifts and addictive acceleration character without drone when the valves are closed.

Why enthusiasts choose this upgrade

• Valve-controlled sound on demand using the car’s original electronics
• Quad 102 mm carbon fibre tips with titanium cores for a race-bred look
• High-flow design for improved gas velocity and reduced back pressure
• Bead-blasted stainless finish for durability and a premium OEM-plus appearance
• Weight saving compared to factory hardware
• Precision fitment – designed specifically for the BMW 8 Series M8 F92, S63B44B, 2019 onwards
• Handcrafted in Austria for outstanding build quality

Technical details

• Main pipe diameter: 84 mm
• Tailpipe outlets: 4 x 102 mm, angled, carbon fibre with titanium internals
• Valve integration: uses factory valve control
• Configuration: dual exit, left and right
• Part number: 087020 0000+089618 0500LR+0446 70CS

Fitment, mapping and important notes

• This system removes the GPF also known as OPF. ECU calibration is required to deactivate related diagnostics and prevent warning lights.
• BMW heat protection for the tank must be installed: OE part number 51 48 8 060 077.
• For road legality, check local regulations. Intended for off-road and motorsport use where applicable.

Compatibility and search terms

Designed for BMW M8 F92 2019 onwards with the S63B44B 441 kW twin-turbo V8. Ideal searches include BMW M8 exhaust upgrade UK, F92 cat back system, valved quad exit exhaust, carbon fibre tips 102 mm, OPF delete M8, S63 performance exhaust, BMW 8 Series M8 coupe exhaust, xDrive M8 exhaust, titanium core tailpipes, performance catback for BMW M8.

Trusted by MJ Modifications customers

We have installed this system for clients and the feedback is consistently excellent. Sharper response, a deeper, harder-edged note and stunning carbon tailpipes make it a stand-out upgrade for the M8.

Professional installation

Need fitting and mapping support We can help. MJ Modifications in Warwickshire offers expert installation and ECU services for this setup. Email info@mjmodifications.co.uk for a tailored quote and scheduling.

Upgrade your M8 with a valved, free-flowing cat back that blends everyday refinement with track-ready character. In stock for fast UK supply.