Evolution Racewerks - Catless Downpipes || S63(F90)

 Full Kit Shown with Brush Finish

Ease of Installation: (1 Easy, 5 Hard) 3

Key Features:

• Now available for the 2017+ BMW F90 M5 & F92/F93 M8 S63M Engines!
• Higher Max Horsepower Power Curve
• Higher Initial Torque Curve.  The torque curve hits faster and higher and longer.
• Better throttle response and faster turbo spool-up times.
• Mandrel Bent 3" piping.  Smooth transition to the exhaust system.
• 100% Stainless Steel Construction
• 100% TIG welded for better quality welds
• Precision CNC machined turbocharger V-Band flange.
• Mirror polish or brush finish
• Available with a high-temperature black thermal coating to reduce underhood temperatures.
• Retains factory slip-on style connection.
• Compatible with the factory or aftermarket exhaust systems.
• Track-tested durability.
• Includes all hardware for complete installation.
• Limited Lifetime Warranty.

Restrictions in the exhaust system robs horsepower and torque especially on turbocharged cars.  Thus, removing as much exhaust flow restrictions will increase horsepower and torque significantly.  The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction.  The factory catalytic converter is made up of catalyst material formed into "honeycomb" weaves.  Exhaust gas must pass through these tiny "honeycomb" weaves on their way to the exhaust system thus causing a major exhaust flow restriction.  It also causes turbulence after the catalytic converter which causes the exhaust flow to slow down (which increases restriction).  By replacing the factory downpipe/catalytic converter with our Competition Series Catless Downpipe, more power is unleashed!  You will feel the difference instantly. 

The 2017+ BMW M5 (F90) has 2 primary catalytic converters and 2 secondary catalytic converters for a total of 4 catalytic converters.  Our Competition Series Catless Downpipes replace both the primary and secondary sections. 

Our Competition Series Catless Downpipes are constructed of 100% 304-grade stainless steel and utilize mandrel bent piping. They are 100% TIG welded by our in-house fabricators and built in the USA.  The factory turbocharger turbine housing utilizes a 3.5" V-Band flange which we have duplicated and CNC machined cut out of billet 304 stainless steel.  Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods.  The O2 sensor is positioned at the factory location.  100% bolt on. 

Our downpipes are designed to fit perfectly with the factory exhaust system or your aftermarket exhaust system.  There are no compatibility issues whatsoever.  The downpipes will come by default with a brushed finish.

OPF Compatibility (EU & Asia Spec)

European Spec & Asia Spec cars feature the Otto Particulate Filter (OPF) system as part of their emissions equipment.  We now offer downpipes that are compatible with the OPF system and allow you to retain the full function of it.