Active Autowerke Catted Race Downpipe - BMW B58 3.0L

For over 30 years, Active Autowerke has been the one to turn to for high quality BMW performance products. Committed to enhancing the performance of BMWs through the highest quality products is what Active Autowerke is all about. 

The F Chassis B58 downpipes are strategically engineered to virtually eliminate the immensely restrictive characteristics of the factory downpipes – therefore reducing radiant heat and increasing performance.

Features Include

• NO CEL when using this downpipe

• GESI EPA registered high flow and fully OBD2 compliant

• Casted upper stainless steel V-Band for precise fitment

• 4.50" diameter piping allows for maximum power output

• Quicker turbo spool

• Rated for 500 to 850 hp applications

• Withstands up to 1500° F

• Can reach operational efficiency within 9 seconds of startup

• Easily bolts-on – no cutting or welding required

• Durable construction from TIG welded 304 stainless steel

• Precise fitment

• Ultra high flow 300 cell per square inch catalyst

• EPA certified for use on OBD2 vehicles (1996 and newer) except in California

• 304 stainless steel substrate is furnace braised to the mantle for outstanding durability

• GESi® proprietary precious metal loading technology ensures greatly reduced emissions

• Ideal for Forced Induction Applications with no loss of HP

• Both passengers and drivers are safe from harmful emissions and noise

• Covered by 5 Year / 50,000 Mile Warranty (on catalytic converter)

Vehicle Fitment