Active Autowerke Signature Exhaust System – BMW M3 / M4 (F80 / F82, S55)

OVERVIEW

The Active Autowerke Signature Exhaust System is a complete downpipe-back exhaust for the F80 M3 and F82 / F83 M4. It integrates the mid-pipe into a single 3.5-inch design, so no separate mid-pipe is required, and is built entirely from 304 stainless steel that is mandrel-bent and fully TIG-welded. The system reuses the factory exhaust valve motor for stock-style valve control and finishes at a set of adjustable 90mm double-walled tips.

An Active F-brace is included to stiffen the rear subframe area. Active Autowerke offers the tips in brushed silver, matte black, carbon, or carbon-over-black. The exhaust is built to order and intended for off-road / competition use.

SPECS

• Complete downpipe-back exhaust system; integrates the mid-pipe (no separate mid-pipe required)
• 100% 304 stainless steel, fully TIG-welded and mandrel-bent
• 3.5" single-pipe design
• Reuses the factory exhaust valve motor (valved)
• Adjustable 90mm double-walled tips: brushed silver, matte black, carbon, or carbon-over-black
• Includes Active F-brace
• No permanent modifications required
• Built to order (Active Autowerke quotes up to 2–3 weeks before shipping)
• Made in Miami, FL, USA
• Off-road / competition use

PARTS INCLUDED

• Signature exhaust system (integrated mid and rear sections)
• Active F-brace
• Choice of 90mm double-walled tips

TECH RESOURCES

Additional Parts Required

• None. The system bolts to the OEM or an aftermarket S55 downpipe; no additional hardware is required.
• Optional: pair with Active Autowerke GESI G-Sport Catted Downpipes (F8X, S55) for a complete turbo-back setup.

Installation

• Active Autowerke F8X M3 / M4 rear exhaust installation instructions (PDF)

Notes

• This system already includes a single mid-pipe and does NOT work with Active Autowerke's separate single mid pipe or Equal Length mid pipe.
• Tip finish is selected at the variant level.
• Intended for off-road / competition use.

PART NUMBER

• 11-045 — Brushed Silver tips
• 11-045B — Matte Black tips
• 11-045C — Carbon tips
• 11-045CB — Carbon over black tips

VEHICLE APPLICATIONS