Cat-Back Milltek BMW 5 Series F90 - Exhaust After Downpipes - Quad Jet-100 Carbon Tips - Phase 2 M5 and M5 Competition

Milltek Sport Exhaust System for BMW 5 Series F90 M5

Does the factory sound of your BMW 5 Series F90 M5 leave you wanting more? This Milltek Sport stainless steel exhaust system is the most requested upgrade among owners: more presence, a true sound signature, and build quality that lasts.

Technical specifications

• Milltek part number: SSXBM1231
• Part type: Exhaust system
• Configuration: With valves
• Detail: Post-downpipe system with Bypass primary muffler / DPF + Active center H-pipe - quad Jet-100 carbon tips
• Tube diameter: 80 mm
• Tips: 102 Jet tip
• Tip finish: carbon
• Installation details: OEM downpipes installation (flange mount) - ECU remap - With valves
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• BMW 5 Series F90 M5 4.4 Twin Turbo (Phase 2 M5 and M5 Competition, 2021-2024, with DPF)

Not sure about compatibility with your vehicle? Contact us with your VIN (chassis number) before ordering.

Most frequently asked questions

• What about the neighbors in the morning? The valves operate as on the factory system: the line stays closed and quiet at startup or in comfort mode, and fully opens in sport mode.
• Installation: the system uses the factory mounting points. A well-equipped shop typically fits it in one to two hours.

Why choose Milltek Sport?

Milltek Sport designs and manufactures its exhausts in England, using mandrel-bent tubing to preserve the internal diameter and a fit developed on the vehicle. The result: a clean installation with no modification required, and a sound tuned to remain pleasant for everyday driving.

Further reading

• Valved exhaust systems: how do they work, and should you keep them?