Active Autowerke Downpipe- BMW S58 G80 G82 G87 M2 M3 M4

OVERVIEW

Performance downpipe for the BMW S58-powered G87 M2, G80 M3, and G82 M4. The catted variant includes a pair of 4.5" ultra-high-flow GESI catalytic converters that will not produce a CEL.

SPECS

• Casted upper stainless steel V-Band for precise fitment
• 4.50" diameter piping for maximum power output
• Quicker turbo spool
• Durable construction from TIG welded 304 stainless steel
• Easily bolts on, no cutting or welding required

PARTS INCLUDED

• 1x downpipe (catless or catted per selected variant)

TECH RESOURCES

• The catted variant uses GESI G-Sport Ultra High Output catalytic converters — full 304 stainless steel construction including the substrate, EPA registered and OBD2 compliant for 1996-and-newer vehicles, rated for 500–850hp per cat, and will not produce a CEL.
• Not legal for use on vehicles registered in California per California Vehicle Code Section 27156 and 38391 — meets EPA, not CARB, standards.
• For the M3/M4 (G80/G82), pair with an Active Autowerke mid-pipe — Gen 2 Equal Length, Single, or Mid-Pipe with X-Pipe.
• Catalytic converter break-in procedure — Active Cats / GESI catted variants (PDF)

PART NUMBER

• 11-112 (Catless)
• 11-085A (Active Cats)
• 11-085 (Gesi Cats)

VEHICLE APPLICATIONS