Eisenmann Rear Muffler 4x Ø90mm - G29 Z4 from Eisenmann is a masterpiece of German exhaust craftsmanship designed specifically for BMW enthusiasts who refuse to compromise on quality, fitment, or the acoustic character of their vehicle. Eisenmann has spent decades developing an exhaust engineering methodology centered entirely on BMW's engine lineup — they are BMW specialists, not a generalist exhaust brand that covers every platform with the same template. That focus produces a depth of application knowledge and acoustic refinement that shows up in the driving experience in a way that generalist brands cannot replicate.
Every Eisenmann exhaust is manufactured in Germany with premium T304 or T316 stainless steel — the higher-grade alloys that provide superior corrosion resistance over the life of the vehicle compared to cheaper domestic grades. Bends are precision mandrel-formed to maintain consistent tube diameter through every curve, preserving the exhaust velocity and gas flow efficiency that wider-radius pressed bends sacrifice. All joints are hand-TIG-welded to aerospace quality standards, producing joints that are stronger than the surrounding material and will not crack or separate under thermal cycling. A lifetime of quality built into every system.
Product Details:
- Eisenmann hand-crafted BMW-specific performance exhaust
- Premium T304/T316 stainless steel for superior corrosion resistance
- Mandrel-bent tubing — consistent diameter through every curve
- Hand-TIG-welded joints — stronger than surrounding material
- BMW-specialized acoustic engineering for authentic engine character
- See title for specific configuration and vehicle fitment