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Active Autowerke G80/G82 M3/M4 Signature Mid-Pipe X-Pipe
This Active Autowerke Signature mid-pipe with X-pipe is engineered for the G80/G82 M3 and M4, replacing the factory mid-section with a mandrel-bent stainless steel assembly that merges both cylinder banks through an X-pipe before feeding the rear muffler. The X-pipe crossover balances exhaust pulses between the two banks, which is what gives the S58 its cleaner, more even tone under load.
It is offered in two configurations: a straight-pipe version for maximum flow and volume, and a version fitted with 100-cell-per-inch flat catalytic converters for a more subdued note. Both bolt to the factory downpipes and rear section, so no cutting or fabrication is required.
Key Features
| Brand | Active Autowerke |
| Product Type | Exhaust Mid-Pipe |
| Model | Signature |
| Compatibility | BMW G80 M3, G82 M4 |
| Material | Stainless Steel |
| Exhaust Type | Mid-pipe Only w/ Straight Pipes; Mid-pipe w/ 100cpi flat cats |
| Fitment | Direct Bolt-On |
Highlights
- Signature X-pipe crossover for balanced exhaust pulses
- Stainless steel construction
- Available with straight pipes or 100cpi flat cats
- Direct bolt-on installation
Compatibility
Fits BMW G80 M3 and G82 M4 models. Direct bolt-on to factory downpipes and rear section.
Frequently asked questions
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