Competition Series 4.5" Catless Downpipe for the B58 (6 Cylinder) Engine n63 we're proud to introduce our

we're proud to introduce our new Sport Dual Side Mount Intercoolers (SMIC)

Developed and tested for over a year under the harsh conditions of racing

Our Competition Series Catless Primary Downpipes replace just the primary section

What the 600 cells means is that per every inch

how much heatsoak the OEM intercoolers would have

Competition Series 4.5" Catless Downpipe for the B58 (6 Cylinder) Engine n63 we're proud to introduce ourOur new Competition Series 4. 5" Downpipes for your 2016+ 240i 340i 440i 540i, 2016+ 740i 840i, 2017+ X3 X4 X5 X6 X7 M40iX & Z4 M40i six cylinder B58 turbo engine! Key Features: Made in the USA! Manufactured in house. Fitment for the new BMW B58 Engine Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster, higher, and longer Better throttle response and faster turbo spool up times Mandrel Bent 4. 5" piping. Smooth