THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHICLES IN THE STATE OF CALIFORNIA. CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution controlled vehicles upon public roads/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA. In addition to vehicle use verification, a Vehicle Compliance Waiver needs to be signed. The item is for sale for international customers without restriction.

OVERVIEW

Evolution Racewerks' Sports Series Metallic High Flow Catted Downpipe is designed for the B58 six-cylinder turbo engine, covering the 240i, 340i, 440i and 540i as well as the X3, X4 and X5 M40i models. It replaces the restrictive factory downpipe with a 200 cell metallic catalytic converter and mandrel bent 4.5" to 4" piping that transitions smoothly into the rest of the exhaust.

The result is a higher maximum horsepower curve and a torque curve that hits faster, climbs higher and holds longer, with better throttle response and quicker turbo spool. The downpipe is built entirely from stainless steel, 100% TIG welded, and made in the USA, with a precision CNC machined turbocharger V-band flange. It works with the factory exhaust system or an aftermarket one.

Ceramic thermal coating is offered as an option. Its purpose is to keep heat from the exhaust gases inside the downpipe rather than radiating out, which lowers underhood temperatures and reduces heat absorption by nearby parts. Retaining that energy also keeps exhaust flow velocities up, lowering backpressure, and the coating adds corrosion resistance. ER's thermal coating resists up to 2000°F and is available in black only, because no other color survives that temperature.

SPECS

Catalytic converter: high flow 200 cell metallic core
Piping: mandrel bent 4.5" / 4" with a smooth transition into the exhaust system
Construction: 100% stainless steel, 100% TIG welded, made in the USA
Turbocharger flange: precision CNC machined V-band
Finish: brush finish standard, polish finish optional
Optional high temperature black thermal coating rated to 2000°F to reduce underhood temperatures; available in black only
Optional additional O2 sensor bung for a wideband O2 sensor, supplied with a pre-installed plug
Optional EGT sensor bung for EGT gauges, supplied with a pre-installed plug
Compatible with the factory or aftermarket exhaust systems
Track tested durability
All hardware for a complete installation is included
Warranty: Evolution Racewerks Limited Lifetime Warranty

PARTS INCLUDED

Sports Series metallic high flow 200 cell catted downpipe
All hardware required for complete installation, as supplied by Evolution Racewerks

TECH RESOURCES

Additional Parts Required

None. Evolution Racewerks specifies no additional hardware for this part; all installation hardware is supplied and the downpipe mates to the factory or an aftermarket exhaust.
A signed Vehicle Compliance Waiver and vehicle use verification are required before this part can be sold and shipped.

Installation

Evolution Racewerks does not publish a downloadable installation guide for this downpipe. It bolts to the factory turbocharger V-band flange and reconnects to the factory or aftermarket exhaust using the supplied hardware.
Contact Speed Logic for installation support or fitment questions.

Notes

Fitment above is taken from the fitment list published for this part. If your car is not listed, confirm fitment with Speed Logic before ordering.

PART NUMBER

BM-EXH018SCAT — Evolution Racewerks catalog number, brush finish
BM-EXH018PCAT — polish finish
BM-EXH018TBCAT — black thermal coating

VEHICLE APPLICATIONS

Make	Model	Chassis	Engine	Years
BMW	M240i	F22 / F23	B58 3.0L Turbo I6	2016–2020
BMW	M240i xDrive	F22 / F23	B58 3.0L Turbo I6	2016–2020
BMW	340i	F30 / F34	B58 3.0L Turbo I6	2016–2019
BMW	340i xDrive	F30 / F34	B58 3.0L Turbo I6	2016–2019
BMW	M340i	G20	B58 3.0L Turbo I6	2019+
BMW	M340i xDrive	G20	B58 3.0L Turbo I6	2019+
BMW	440i	F32 / F33 / F36	B58 3.0L Turbo I6	2016–2020
BMW	440i xDrive	F32 / F33 / F36	B58 3.0L Turbo I6	2016–2020
BMW	540i	G30	B58 3.0L Turbo I6	2017+
BMW	540i xDrive	G30	B58 3.0L Turbo I6	2017+
BMW	X3 M40i	G01	B58 3.0L Turbo I6	2018+
BMW	740i	G11	B58 3.0L Turbo I6	2016+
BMW	840i	G14 / G15 / G16	B58 3.0L Turbo I6	2016+
BMW	X4 M40i	G02	B58 3.0L Turbo I6	2017+
BMW	X5 M40i	G05	B58 3.0L Turbo I6	2017+
BMW	X6 M40i	G06	B58 3.0L Turbo I6	2017+
BMW	X7 M40i	G07	B58 3.0L Turbo I6	2017+
BMW	Z4 M40i	G29	B58 3.0L Turbo I6	2019+