SKU: 78628580989

Exhaust Muffler Kit-Stainless Exhaust Dinan D660-0049-BLK

Sale price$687.58 Regular price$763.98
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Description

Exhaust Muffler Kit-Stainless Exhaust Dinan D660-0049-BLKOverview: Dinan's Free Flow Axle Back exhaust system features 100% stainless steel construction measured to exact specifications to ensure proper fit via factory hangers and mounting points. Dyno tuned for maximum exhaust flow with minimum backpressure, this system is designed to provide a more aggressive sound under acceleration while reducing drone inside the vehicle, thanks to Dinan's exclusive Helmholtz Chamber and Butterfly Valve technologies.

Overview:

Dinan's Free Flow Axle-Back exhaust system features 100% stainless steel construction measured to exact specifications to ensure proper fit via factory hangers and mounting points. Dyno tuned for maximum exhaust flow with minimum backpressure, this system is designed to provide a more aggressive sound under acceleration while reducing drone inside the vehicle, thanks to Dinan's exclusive Helmholtz Chamber and Butterfly Valve technologies. The exhaust gasses exit through larger laser engraved ultra durable polished, or ceramic black, quad tips. Every Dinan product comes with our industry-exclusive factory matching new car bumper to bumper warranty and is designed and tested in Morgan Hill, California and can be purchased and installed at any Dinan Approved BMW dealership nationwide.

Features:

  • More Power: +8 HP
  • Helmholtz chamber and butterfly valve technology incorporated to remove drone
  • "Straight through" canister design
  • Enjoyably louder, throatier and deep sound
  • Quad 3.5" black ceramic coated, or polished stainless, laser engraved exhaust tips
  • 100% 304 stainless steel construction
  • Uses the factory brackets and hangers for a factory-like fitment

Application:

Year Make Model Submodel Engine Size
2012 - 2015 BMW M6 4.4L V8
2014 - 2015 BMW M6 Gran Coupe 4.4L V8

Specs:

Brand Dinan
Dinan Point Value 3
Emission Code 5
Height 11
Labor Time (Hours) 2.2
Length 48
Material 304 Stainless Steel
Max HP Gain 8
Product Type Axle-Back Exhaust
Sound Level Aggressive / Moderate
System Type Axle-back
Warning California Proposition 65
Weight 64
Width 30
Shipping Notes
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Exchange/Return Notes
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SKU: 78628580989

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Robert Fately
Lexington, US
★★★★★ 5
Great content, horrible formatting
Format: Kindle, Format: Kindle
I am only a quarter way through the book and can see it is excellent in terms of content - the kind of book that makes the reader quite angry at the way things have been done behind the scenes (much like Patel's "Government Gangsters" and "Kennnedy's "The Real Anthony Fauci"). However, a warning to those who get the Kindle version - it is formatted horribly. After having read dozens of books on my iPad mini using the Kindle app over the years, this is the first bok where hyphens are in words that do not break on line endings, which seems minor but after a few dozen instances gets really annoying. I hope some AI reads these reviews and sends a note to whoever edited this thing (or converted it to an e-book) to rectify this stupid situation. Attached are two screen shots, both from page 39 - where I high-lit the offending words...
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Reviewed in the United States on February 17, 2026
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J Dub
Lowell, US
★★★★★ 5
I have never said this before, but a MUST read.
Format: Paperback
A terrifying book. If you have been following recent random statements from the President about election fraud and our actions against Venezuela, things will become much clearer. It is a scary read and will bring feelings of dread, but it should be read by everyone. By several copies and hand them out to anyone you know. The world has been played.
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Reviewed in the United States on December 18, 2025
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John Stryker Meyer
Boise, US
★★★★★ 5
Election fraud in America and 72 other countries documented
Format: Paperback
Powerful book on election fraud that should be read by every American and 72 other countries that had their elections also fixed. I salute award-winning author Ralph Pezzullo's courage and determination.
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Reviewed in the United States on March 9, 2026
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P. Henke
Birmingham, US
★★★★★ 5
Proof that our election systems have been corrupted!
Format: Paperback
This is the book that Election Corruption Deniers don't want you to read. It is well documented and it brings the receipts. I admire the tenacity and sacrifice of those who made this book possible. If you are at all concerned about election integrity, you need to buy this book.
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Reviewed in the United States on March 12, 2026
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Donald H. Wacome
San Leandro, US
★★★★★ 4
Crucial information
Format: Paperback
Provides crucial information about election fraud, but badly in need of a competent editor.
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Reviewed in the United States on February 25, 2026

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