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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.
Features
Specifications
| Body Material | T304 Stainless Steel |
| Category | Exhaust |
| Clamps Included | Yes |
| Dinan Point Value | 3 |
| Emission Code | 5 |
| Exhaust Tip Quantity | 4 |
| Finish | Brushed |
| Grade Type | Performance |
| Hangers Included | Yes |
| Height | 10 |
| Labor Time (Hours) | 2 |
| Length | 54 |
| Material | T304 Stainless Steel |
| Max HP Gain | 6 @ 6500 RPM |
| Max Torque (lb-ft) Gain | 5 @ 6500 RPM |
| Muffler Quantity | N/A |
| Peak HP | 402 @ 6500 RPM |
| Peak Torque (lb-ft) | 375 lb/ft @ 4500 RPM |
| Pipe Material | T304 Stainless Steel |
| Product Type | Axle-Back Exhaust |
| Sub Category | Exhaust and Tail Pipes |
| Weight | 60.5 |
| Width | 29 |
| UPC | 813725021904 |
| Part Number | D660-3950 |
This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Installation Instructions:
Free U.S. standard shipping on qualifying orders $199+. Special order and made-to-order items can't be cancelled or refunded once ordered.
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We carry 750,000+ parts, so we can probably still get it. Check the spelling, try the part number, or ask us.
Request this part Text us (833) 691-5717