The Eisenmann 645ci Performance Exhaust is a hand-built T304 stainless steel rear exhaust engineered for the BMW E63 coupe and E64 convertible 645ci. Available with 4 x 76mm or 4 x 83mm tips, the system brings out the full character of the N62 V8 while maintaining OEM-quality fitment. Rear bumper modification is required with both tip styles.

Eisenmann has supplied OEM exhaust systems to Porsche and AMG for decades. That engineering heritage is reflected in the tolerances, finish quality, and sound character of every Eisenmann performance exhaust, each one hand-built in Germany from mandrel-bent T304 stainless steel with TIG-welded construction. Choose Sport for a refined daily-driver tone or Race for a more aggressive V8 exhaust note on the BMW E63 / E64 645ci.

Product Details

  • Brand: Eisenmann
  • Material: T304 stainless steel
  • Construction: Mandrel-bent, hand-TIG-welded in Germany
  • Tip Styles: 4 x 76mm, 4 x 83mm
  • Sound Levels: Sport, Race
  • Note: Rear bumper modification required with both tip styles

Available Configurations

  • Sport / 4 x 76mm - SKU: B5308.00760 - $2,347.35
  • Sport / 4 x 83mm - SKU: B5308.00831 - $2,443.71
  • Race / 4 x 76mm - SKU: B5308.20760 - $2,347.35
  • Race / 4 x 83mm - SKU: B5308.20831 - $2,443.71

Vehicle Applications

  • BMW E63 645ci Coupe
  • BMW E64 645ci Convertible