Sports Series High Flow Catted Primary Downpipe 2018-23 M5/M8 S63M Engine competition Independent testing (by customers and

Independent testing (by customers and shops) throughout the years have shown that time and time again

Introducing our Competition Series Catless Downpipes for your twin turbo S63 engine

100% Stainless Steel Construction

Precision CNC machined flanges ensures leak free connection to turbocharger and throttle body

Genuine BMW O-Ring (Part #13717568031)

Sports Series High Flow Catted Primary Downpipe 2018-23 M5/M8 S63M Engine competition Independent testing (by customers andIntroducing our new Sports Series High Flow Catted Primary Downpipes for your twin turbo S63M engine! Fits 2018 23 M5 (F90) & 2018 23 M8 (F92 F93). Key Features: Made in the USA! Manufactured in house. Now available for the 2018 23 BMW F90 M5 & 2018 23 F92 F93 M8 S63M Engines! High Flow 200 cell metallic catalytic converter Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Better throttle