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