Remus Non-Resonated Cat back System Left/Right with Integrated valves using the OE valve control system with 4 Carbon tail pipes Ø 102 mm angled, Titanium internals - 5 Series F90 M5 441 kW S63B44B 2018-

Premium performance exhaust upgrade for BMW 5 Series F90 M5 S63B44B 2018 onwards

Transform your F90 M5 with this Remus valved performance system featuring quad 102 mm carbon fibre tailpipes with titanium inner sleeves. Expect a deeper, motorsport-inspired tone with the valves open and a refined drive when closed, all while retaining factory valve control through the original actuators for seamless integration with your drive modes.

We rate this system highly. Our team has installed it, and customer feedback has been outstanding for sound quality, build, and fitment. If you want a serious exhaust upgrade that looks the part, sounds incredible and unlocks performance with reduced back pressure, this is it.

Why choose this system

• Valve-controlled exhaust retains OE flap operation for comfort and sport on demand
• 4 x 102 mm angled carbon tailpipes with titanium internals for an aggressive, high-end finish
• Straight-through design for increased performance and lower backpressure
• 84 mm stainless steel pipework, shot-blasted finish, lightweight construction
• Precision fit, perfect alignment and premium weld quality
• Handmade in Austria for exceptional craftsmanship and durability

Engineered for enthusiasts

• Rich, powerful soundtrack with the valves open and a mature tone for everyday driving when closed
• Optimised flow to help the S63 twin-turbo V8 breathe better
• Durable materials designed to withstand heat cycles and UK road conditions

Fitment and compatibility

• Vehicle: BMW 5 Series F90 M5, engine code S63B44B, 441 kW, 2018 onwards
• Pipe diameter: 84 mm
• Valves: integrates with the original valve control system
• Tailpipes: 4 x carbon fibre, 102 mm, angled slash-cut with titanium inner sleeves

Important notes

• Only for vehicles equipped with GPF/OPF
• This system removes the GPF/OPF. The GPF monitoring must be deactivated via ECU calibration to prevent warning lights and engine management issues
• The original BMW part “heat protection for tank” must be used: OE part number 51 48 8 060 077

Part number

089317 0000+089618 0500LR+0446 70CS

Professional installation

We recommend professional fitting. MJ Modifications in Warwickshire can install and set up this system for you. To request a fitting quote, email info@mjmodifications.co.uk.

Search-friendly highlights

BMW F90 M5 performance exhaust upgrade, valved sports exhaust with carbon fibre tips, titanium core tailpipes, quad exit 102 mm, OPF delete compatible, stainless steel 84 mm pipework, reduced backpressure, deep V8 tone, premium European-made exhaust, Remus handmade system, straight-through design, factory valve integration, upgrade for 2018-on M5 S63 twin-turbo V8.