Performance S63 Downpipes | BMW M5 & M5 Competition (F90) | 2018–2023

GCA Performance S63 Downpipes

BMW M5 & M5 Competition (F90) | 2018–2023 | S63 4.4L Twin-Turbo V8

Unlock a more aggressive exhaust note and increased flow from your F90 M5 with the GCA Performance S63 Downpipes. Designed specifically for BMW’s 4.4L twin-turbo S63 engine, these downpipes reduce exhaust restriction and backpressure while supporting improved turbo response and increased horsepower and torque potential.

Constructed from high-quality T304 stainless steel and finished with precision TIG welds, each set is engineered for strength, durability, and vehicle-specific fitment. Multiple configurations are available, including racing catless downpipes, 200-cell high-flow catalytic converters, and optional heat shielding.

Whether you're building a tuned street car or a dedicated performance setup, these downpipes provide the airflow and sound needed to bring the S63 V8 to life.

Features

• Designed specifically for the BMW S63 4.4L twin-turbo V8
• High-quality T304 stainless-steel construction
• Precision TIG-welded joints
• Reduced exhaust restriction and backpressure
• Supports increased horsepower and torque potential
• Improved turbo response
• More aggressive exhaust tone
• Direct vehicle-specific fitment
• Fully reversible to the factory setup
• All required mounting hardware included
• Optional integrated heat shielding
• Available with racing catless or 200-cell high-flow catalytic converters
• 1-year manufacturer warranty

Available Configurations

Catalytic Converter

• Racing Downpipes — No Catalytic Converter
• 200-Cell Euro 6 Sport High-Flow Catalytic Converter

Heat Shield

• No Heat Shield
• Integrated Heat Shield

Vehicle Fitment

• BMW M5 (F90): 2018–2023
• BMW M5 Competition (F90): 2019–2023

Engine: S63 4.4L Twin-Turbo V8

Important Notes

The racing/catless configuration is intended for competition or off-road use where permitted and may not comply with federal, state, or local emissions regulations. A check-engine light or ECU calibration requirements may occur depending on configuration and vehicle setup.

High-flow catalytic converters should not be assumed to guarantee emissions or inspection compliance. Check applicable laws before ordering.

Availability & Shipping

In stock.

• Free standard shipping to the lower 48 states
• Estimated delivery: 5–8 business days, depending on location
• Ships via UPS or FedEx
• Front racing pipes may require approximately 5 business days of processing before shipment

Installation

Professional installation is strongly recommended to ensure correct sealing, sensor placement, clearance, and secure mounting.

Uproar Customs does not provide installation guides or technical support for self-installation.