Dinan · New
Dinan 00-03 BMW M5 (E39) Free Flow Axleback Exhaust - Polished Tips
MPN D660-3950 · Store SKU dnnD660-3950
Supplier stock checked 11/7/2026, 10:42:21 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Dinan's Free Flow Axle-Back Exhaust for the M5 provides improved flow and the resulting power gains without the excessive noise associated with typical aftermarket mufflers. The Dinan exhaust features a rigid and durable muffler case, manufactured from 20 gauge-304 stainless steel for optimum resistance to corrosion. 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. The system also reduces weight substantially, weighing in at only 37.6 lbs. as compared to the stock system at 66 lbs. Dual 3-inch diameter polished stainless tips give the cars a tasteful performance look as well. Dinan Free Flow Axle-Back Exhaust - 2000-2003 BMW M5 Stainless Steel - Polished Tips - E39
Manufacturer fitment & guides
Check D660-3950 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y