Product Description
BMW Free Flow Axle Back Exhaust with Black Tips - Dinan D660-4604
BMW Free Flow Axle Back Exhaust with Black Tips - Dinan D660-4604
If you've been searching for a truly high-performance Axle-Back exhaust for your M3 look no further. Dinan's unique muffler design effectively reduces back-pressure for improved flow, resulting in measurable power gains. Manufactured from 304 stainless steel inside and out for superior resistance to corrosion as well as a significant reduction of weight. And from those aggressive-looking ceramic-coated tips flows an exhaust note that will be music to the driving enthusiast's ears. The Dinan exhaust delivers exactly what the M3 owner demands in a performance muffler; increased power, reduced weight, a look that means business and the throaty exhaust note you'd expect from an M3.
Features:
- More Power: + 7 HP @ 8000 RPM + 5 LB-FT @ 5000 RPM (w/ software)
- Drone abatement technologies used to reduce cabin resonance
- Enjoyably louder, sportier sound
- Quad 3" black ceramic coated and laser engraved exhaust tips
- 15 lbs. lighter than stock (43 lbs. vs. 58 lbs.)
- 100% 304 stainless steel construction
- Uses the factory brackets and hangers for a factory-like fitment

Founded in 1979, Dinan is well established as North America’s premiere BMW tuner. Dinan develops, manufactures and markets a comprehensive line of high performance products and systems, distributed through a nationwide network of Authorized Dinan Performance Centers that includes select BMW Dealerships and Independent BMW Service/High Performance facilities. Recently, Dinan has further expanded its offerings to include other European marques such as Audi, Mercedes, and Porsche.
Warranty Information
We consider our limited warranty coverage to be a very important component of each Dinan Performance Product and we want you to fully understand it. Dinan’s objective is to enhance the enthusiast’s driving experience by designing and manufacturing the best performing and highest quality automotive products possible. Our limited warranty is intended to cover Dinan products when they are used in the manner for which they were originally designed. Like any manufacturer, we cannot be responsible when our products are subjected to misuse, improper installation, misapplication, modification or neglect. Consumers are encouraged to familiarize themselves with the specifics of Dinan’s Limited Warranty, including exclusions and potential effects to the manufacturer’s limited new car warranty, prior to making the decision to purchase and install Dinan products and systems. Consumers are invited to contact Dinan at 408-779-8584 with any questions regarding Dinan’s limited warranty coverage, procedures, exclusions, etc.
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