BMW F90 M5 / F92 M8 Downpipes (S63) – Boosted Engineering

Unlock the true performance and sound of your BMW F90 M5 or F92 M8 with the Boosted Engineering High Flow Downpipes. Designed specifically for the S63 twin-turbo engine, these downpipes significantly reduce exhaust backpressure and improve overall turbo efficiency.

By allowing the engine to breathe more freely, this upgrade delivers faster turbo spool, increased power potential, and a noticeably more aggressive exhaust note — making it one of the most effective performance upgrades for the S63 platform.

Constructed from high-quality 304 stainless steel with precision TIG welding, these downpipes are built to withstand extreme heat and high-performance conditions while maintaining OEM-style fitment for straightforward installation.

Key Features:
• Reduced exhaust backpressure for improved performance
• Increased turbo response and power potential
• Aggressive and enhanced exhaust sound
• High-quality 304 stainless steel construction
• Precision fitment for seamless installation

Fitment:
• BMW F90 M5
• BMW F92 M8
• BMW F93 M8

Important Information:
• Professional installation recommended
• ECU tuning required to maximise performance and avoid check engine lights
• For off-road / motorsport use where applicable

The following are typically required to run this kit at intended output. Boosted Engineering can supply or advise on all of them.

• ECU tune (custom)Boosted Engineering supplies base map
• Upgraded fuel systemInjectors, fuel pump — spec varies with output
• Upgraded ignitionR35 coilpack conversion recommended
• Upgraded clutchTwin-plate for higher-power builds
• Oil cooler kitRecommended for sustained high-load use
• Upgraded axlesFor 350+ kW builds

The Street Kit is designed for daily-drivable turbo builds with reliable, responsive power delivery. The Race Kit is oriented toward circuit and drag use where higher output and modular servicing are priorities.

The kit is designed for bolt-on installation in a suitably-equipped workshop. Installation is available at our Carrara QLD workshop, or through our trusted partner network in most metropolitan areas.

Approximate installation time — 20 to 30 hours depending on configuration and supporting work.