Description
The Evolution Racewerks Sports Series High Flow Catted Downpipes are engineered to significantly improve exhaust flow, reduce backpressure, and enhance overall performance on BMW’s twin-turbo N63 engine platform. Designed for the 2019+ BMW M550i, 750i, M850i, X5 M50i, X6 M50i, and X7 M50i, these downpipes replace the restrictive factory catalytic converters with a high-flow 200-cell metallic catalyst for increased horsepower potential and faster turbo response.
Constructed from 100 percent 304 stainless steel, these downpipes feature mandrel-bent 3-inch tubing, CNC-machined 3.5-inch V-band flanges, factory-style donut gasket retention, and OEM-positioned O2 sensor ports. All components are TIG welded in-house in the USA for maximum strength and long-term durability.
These downpipes maintain perfect compatibility with factory exhaust systems as well as aftermarket systems that mount using factory-style connections. A brushed finish is standard, with optional mirror polish and optional high-temperature black ceramic thermal coating.
Fitment Information
Direct fit for the following models equipped with the BMW N63 twin-turbo V8:
- BMW M550i (G30): 2019+
- BMW 750i (G11/G12): 2019+
- BMW M850i (G14/G15/G16): 2019+
- BMW X5 M50i (G05): 2019+
- BMW X6 M50i (G06): 2020+
- BMW X7 M50i (G07): 2019+
Compatible with both factory and aftermarket exhaust systems designed to fit OEM downpipe locations.
Key Features
- Made in the USA and manufactured in house
- Designed for 2019+ BMW N63 engines (M550i, 750i, M850i, X5 M50i, X6 M50i, X7 M50i)
- High-flow 200 cell metallic catalytic converter
- Increased maximum horsepower capacity
- Higher initial torque curve with faster and stronger torque delivery
- Better throttle response and faster turbo spool-up
- Mandrel-bent 3-inch stainless piping with smooth transitions
- 100 percent stainless steel construction
- 100 percent TIG-welded for consistent strength and reliability
- Precision CNC-machined turbocharger V-band flange
- Retains factory donut-style gasket
- Brush finish standard; mirror polish available
- Optional high-temperature black thermal coating for reduced underhood temperatures
- Fully compatible with factory or aftermarket exhaust systems
- Track-tested durability
- Includes hardware required for installation
- Limited Lifetime Warranty
Performance Benefits
Factory catalytic converters use dense ceramic honeycomb structures that restrict exhaust flow, causing turbulence, increased backpressure, and reduced turbocharger efficiency. The Evolution Racewerks design corrects these issues with a 200-cell metallic catalytic converter that provides significantly higher flow capacity.
Benefits include:
- Improved horsepower and torque output
- Faster turbo spool and reduced turbo lag
- Higher exhaust gas velocity and lower backpressure
- Sharper throttle response
- Improved overall engine efficiency
Metallic catalysts tolerate higher temperatures, last longer, and weigh less compared to OEM ceramic catalysts.
Construction Quality
These downpipes are crafted from 100 percent 304 stainless steel, bent using mandrel forming for smooth internal airflow, and TIG-welded entirely in-house. The 3.5-inch billet stainless V-band flange is CNC-machined to match the OEM turbo housing. CNC-machined O2 bungs and laser-cut mounting brackets use stainless welding rods for maximum durability. All O2 sensors mount in factory locations for complete compatibility. This is a direct bolt-on upgrade.
A brushed stainless finish is standard, with optional polish.
Ceramic Thermal Coating Option
Available in high-temperature black only, this coating:
- Reduces radiant heat under the hood
- Helps maintain exhaust gas energy to improve flow velocity
- Reduces backpressure
- Adds corrosion resistance
- Withstands temperatures up to 2000°F
