Active Autowerke GESI Catted Downpipes – BMW S58 G80/G82/G87 M2/M3/M4 11-085

OVERVIEW

Performance downpipes for the BMW S58-powered G87 M2, G80 M3, and G82 M4. This version is equipped with a pair of 4.5" ultra-high-flow GESI catalytic converters that will not produce a CEL.

SPECS

• Durable construction from TIG welded 304 stainless steel with 1.5mm wall thickness
• 3 inch diameter piping to reduce exhaust restriction and improve turbo spool
• Tapers to 70mm (stock diameter) to connect to the OEM exhaust system
• Easily bolts on, no cutting or welding required

PARTS INCLUDED

• 1x downpipe set with GESI catalytic converters

TECH RESOURCES

• The pair of 4.5" GESI G-Sport Ultra High Output catalytic converters (400 cells per square inch) feature full 304 stainless steel construction including the substrate, are rated for 500–850hp per cat, withstand temperatures up to 1500°F, reach operational efficiency within 9 seconds of startup, and are EPA registered and OBD2 compliant for 1996-and-newer vehicles — they 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.
• Covered by a 5-year/50,000-mile warranty on shell and tube ends and a 2-year/25,000-mile warranty on the catalytic core to the original purchaser only.
• 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 (PDF)

PART NUMBER

• 11-085

VEHICLE APPLICATIONS