Dinan's Free Flow Exhaust for the 525 provides increased flow for power gains without the excessive noise associated with typical ''performance'' mufflers.
- The Dinan exhausts feature rigid and durable muffler cases manufactured from 20 gauge 304-stainless steel for optimum corrosion resistance. Internally, the systems feature Dinan's Tuned Resonance Chamber technology which provides the optimum balance between maximum power gains and a civilized, yet sporty exhaust note.
- The Dinan exhaust also provides substantial weight reduction compared to the stock muffler, weighing in at 18.5 lbs. compared to the stock system at 23.5 lbs. Dual 3 inch diameter polished stainless steel exhaust tips give the cars a tasteful performance look as well.
*Dyno results for the combination of Stage 2 Engine Software, Cold Air Intake and Free Flow Exhaust.
Models Supported by Dinan Free Flow Exhaust for BMW 525i E39 Sedan non M-Tech
- 525i & Sport Wagon E39 2001-2003