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:
More Power: + 6 HP @ 6500 RPM + 5 LB-FT @ 6500 RPM (w/ software)
Drone abatement technologies used to reduce cabin resonance
Enjoyably louder, sportier sound
Dual 3" polished and laser engraved exhaust tips
Over 28 lbs. lighter than stock (37.6 lbs. vs. 34 lbs.)
100% 304 stainless steel construction
Uses the factory brackets and hangers for a factory-like fitment
Specs
Brand
Dinan
Dinan Point Value
3
Emission Code
5
Height
10
Labor Time (Hours)
2
Length
54
Material
304 Stainless Steel
Max HP Gain
6 @ 6500 RPM
Max Torque (lb-ft) Gain
5 @ 6500 RPM
Peak HP
402 @ 6500 RPM
Peak Torque (lb-ft)
375 lb/ft @ 4500 RPM
Product Type
Axle-Back Exhaust
Sound Level
Moderate / Aggressive
System Type
Axle-back
Weight
60.5
Width
29
Part Number
D660-3950
Emissions
5
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.
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