Evolve Catless Turbo Downpipes | BMW F90 M5 | F91/F92/F93 M8

Evolve Catless Turbo Downpipes

BMW F90 M5 | BMW F91/F92/F93 M8

NOT ROAD LEGAL

Upgrade the performance, sound, and exhaust flow of your S63-powered BMW with the Evolve Catless Turbo Downpipes. Designed to replace the restrictive factory primary catalytic converters, these downpipes allow the turbochargers to spool faster while supporting improved throttle response, lower exhaust-gas temperatures, and increased horsepower and torque.

Constructed from premium T304 stainless steel, the downpipes feature a high-flow 3-inch design that transitions to 2.5 inches where they connect to the front pipes. The smooth exhaust path reduces restriction while producing a more aggressive exhaust note without introducing excessive drone.

When combined with proper ECU tuning, Evolve reports potential gains of up to 35 horsepower and 51 lb-ft of torque.

Product Features

• Premium T304 stainless-steel construction
• High-flow 3-inch piping
• Transitions to 2.5 inches at the front-pipe connection
• Catless primary-downpipe design
• Helps reduce exhaust backpressure
• Supports faster turbo spool
• Improved throttle-response potential
• Helps lower exhaust-gas temperatures
• More aggressive exhaust sound
• Designed to avoid excessive drone
• Compatible with right-hand-drive and left-hand-drive vehicles
• Precision-engineered vehicle-specific fitment
• Installation hardware shown with the kit

Performance Benefits

• Potential gains of up to 35 horsepower
• Potential gains of up to 51 lb-ft of torque
• Quicker turbocharger response
• Improved exhaust flow
• More aggressive exhaust note
• Lower exhaust-gas temperatures

Actual performance results depend on tuning, fuel, supporting modifications, vehicle condition, and testing method.

Vehicle Fitment

• BMW M5 (F90)
• BMW M8 Convertible (F91)
• BMW M8 Coupe (F92)
• BMW M8 Gran Coupe (F93)

Engine: S63 Twin-Turbo V8

Important Fitment Information

These downpipes are a direct fit for Pre-LCI vehicles equipped with sleeved exhaust connections.

Pre-LCI or LCI vehicles equipped with bolted-flange downpipe connections may require:

• Replacement mounting brackets
• A compatible midpipe change
• Additional installation components

The customer should confirm the factory exhaust connection before ordering. A VIN may be required to verify exact compatibility.

Important Legal Notice

Not road legal.

These downpipes remove the factory primary catalytic converters and are intended only for off-road, motorsport, or competition use where legally permitted.

Installation will generally trigger a check-engine light unless the vehicle receives an appropriate ECU calibration or compatible CEL solution. Emissions laws vary by location, and the purchaser is responsible for confirming legal use.

Availability

Available & Ready to Order

Installation

Professional installation and ECU tuning are strongly recommended. Proper exhaust alignment, leak inspection, bracket compatibility, and connection type must be verified during installation.

Uproar Customs does not provide installation instructions, tuning, emissions compliance advice, or technical support for self-installation.