Active Autowerke BMW S58 F97/F98 X3M/X4M Downpipes w GESI CAT

Product Details

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 S58 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

• 3-inch diameter piping allows for maximum power output

• Quicker turbo spool

• 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

• 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 in catalytic converter is furnace braised to the mantle for outstanding durability

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

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

• Precise fitment

• Made in Miami, Florida

• Covered by 5 Year / 50,000 Mile Warranty (on shell and tube ends)

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.

Prop 65 Warning

Product Q&A

Lifetime Replacement

Fits These Cars