Dinan Free Flow Exhaust for BMW 645Ci 2004-2005



SKU: D660-0002

You Save 10% ($190.86)

All orders will include an AutoTalent window decal

Product Description

The system is manufactured using 100% 20 gauge-304 stainless steel for optimum resistance to corrosion. In addition, the muffler is lighter than the stock unit. Internally, the systems feature Dinan's Tuned Resonance Chamber Technology, providing the optimum balance between maximum power gains and a civilized, yet sporty exhaust note.

Dinan's Free Flow Exhaust for 645 models provides improved flow over the stock system without the excessive noise and ''boominess'' associated with typical after-market mufflers. 

Dual 3-inch diameter polished stainless tips give the cars a tasteful performance look as well.

*Dyno results for the combination of the High Flow Intake System, Stage 2 Engine Software and Free Flow Exhaust.

Models supported by Dinan Free Flow Exhaust for BMW 645Ci 2004-2005

  • 2004-2005 645Ci E63 Coupe 
  • 2004-2005 645Ci E64 Convertible 


Product Specifications
Labor Hours/Installation Hours 1.40
Emission Status 50 State Emissions Legal
Max HP Gain 6 @ 6600 rpm
Max Torque Gain 5 lb/ft @ 6600 rpm
Peak Horsepower 349 @ 6500 rpm*
Peak Torque 5 lb/ft @ 6500 rpm
Included Notes Included Item Details