SKU: 67103919995

Dinan Valved Axle-Back Exhaust - BMW / G42 / M240i

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Description

Dinan Valved Axle-Back Exhaust - BMW / G42 / M240iThe 2 series is the nearest embodiment of legacy BMW ideals in today's lineup. As such, in both the non M and M trims, the series is continuously lusted after by the enthusiast community. While the G87 M2 may get the lion's share of publicity, the G42 M240i is equally as enticing and offers a robust value proposition for individuals looking to balance performance with comfort. Equipped with the latest B58 engine also found in the M340i and M440i, the


The 2 series is the nearest embodiment of legacy BMW ideals in today's lineup. As such, in both the non-M and M trims, the series is continuously lusted after by the enthusiast community. While the G87 M2 may get the lion's share of publicity, the G42 M240i is equally as enticing and offers a robust value proposition for individuals looking to balance performance with comfort. Equipped with the latest B58 engine also found in the M340i and M440i, the M240i has performance covered in spades. Beyond the vaunted engine, the platform also borrows numerous other components from its 3 and 4 series counterparts. As such, it made sense to imbue the latest M240i with the same Dinan exhaust treatment the aforementioned models received and were heralded for -- an economical valve system with quad tips.

Quad exhaust tips have been a signature feature of the most powerful letter in the automotive sphere for quite some time. It is a hallmark of the brand that Dinan has long embraced, limiting its own quad tip usage to those M cars that already sported like tip quantity from the factory. That is until the release of the Dinan exhaust systems for the G20 M340i and G22 M440i in 2019 and now extending to the G2 M240i today. While some may scoff at the feature being implemented into a "pseudo-M," the M240i, and the B58 engine platform, are extremely potent and worthy of such a distinction. The factory valance also accommodates the four massive 102mm tips perfectly, further cementing our opinion that the quad tips were destined to be on this performance model. Being numerous and big are not the only selling points to the tips however. Dinan has retained its signature straight cut tip design, safeguarding its unique and elegant styling position amongst a crowded marketplace full of angle cuts. With systems available with either black ceramic coated or polished clamp-on, and laser engraved exhaust tips, there is a version that is sure to meet your individual aesthetic needs.

The use of quad tips also presented some additional challenges and fostered some innovation to the already visually impressive system constructed entirely of TIG welded and brushed T304 stainless steel. Confined to dual tips, the factory system utilizes only one exhaust valve and functions by eliminating the passenger side tip when the valve is closed, siphoning all gases through the muffler and out the driver's side tip for quieter operation. With the introduction of more pipes/tips, this methodology was not practical, or desired. In true Dinan M exhaust fashion, our talented engineering team decided that integrating a second valve to the system would garner the most favorable results in both symmetry and overall sound. The result is a system that incorporates larger 76mm tubing (vs 70mm stock) and allows freer flow through the entirety of the system but specifically to both outer pipes when the enlarged valves are open. The resulting flow and sound mimics an awe-inspiring straight pipe solution with a deeper and meatier tone, a defining element of all Dinan exhausts. In contradiction to the aggressiveness resulting from open valves, when the valves are closed, all gases are forced into the muffler for sound deadening and exit the two inner tips. Regardless of valve position, the intimate nature of the interior is retained so conversation can continue without an excessively loud drone courtesy of numerous drone abatement technologies in the can. With the Dinan exhaust equipped on the M240i you get the best of both worlds; aggressive tone/sound and civility. A combination that is paramount to any M exhaust, and now by virtue of tip count, the M240i as well. Welcome to the illustrious family.

Features:

  • More Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM
  • Enjoyably louder, sportier sound
  • Quad 4" diameter clamp-on, double-walled, black ceramic coated and laser engraved exhaust tips
  • 100% 304 stainless steel construction
  • Larger diameter piping for increased flow (76mm vs 70mm)
  • 4 pounds lighter than the stock system
  • Stock exhaust valve actuator reused, and another valve/actuator added to the opposing side promoting even flow regardless of valve position
  • Computer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions
  • Twin exhaust valves are a whopping 76mm diameter, making them 30% less restrictive than the OE valves
  • Factory-like fitment with included mounting hardware


 

 

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SKU: 67103919995

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Sociologydude
Charlottesville, US
★★★★★ 4
I'd recommend it, especially at this give-away-price
As a sociologist, I was always interested as to how the USSR could morph what Marx considered communalism networked by a shallow, weak, centralized and supposedly representative government into what I would considered an extremest left-wing oligarchy (most fashionably consider it right-wing despite how it was sold and supported by the people that allowed it- so much for cultural relativity and in context social analysis!). If Stalin actually wrote these pieces (or more commonly among dictators farmed it out to a frightened academic ghostwriter) then it could help explain why Marx disassociated himself with much of the Marxist movement toward the end of his life. It is a logically written and well informed book - worth the read if you are into the sociology of politics, philosophy of politics or the history of politics. I'd recommend it, especially at this give-away-price!
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Reviewed in the United States on August 9, 2017
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Amazon Customer
Boise, US
★★★★★ 3
Good book, mediocre edition
Format: Paperback
This review pertains to the quality of this edition's editing and construction, rather than the content of the book itself. Rest assured that the text itself remains a valuable piece of introductory theory. The book is fairly well constructed, with paper and a binding that is sturdy enough for general use. However, my copy had several manufacturing errors including folded over pages being stuck into the binding. In addition, there are several misspelled words throughout the text and some obvious typos (missing letters, incorrect capitalization and punctuation) that did not majorly impact the readability of the text, but were, nevertheless, annoying. Considering the low price of this edition the manufacturing errors are hardly a big deal, but I would have preferred the text itself to have been treated with more care and respect while being prepared for printing.
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Reviewed in the United States on September 13, 2025
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Helena Morgan
Boise, US
★★★★★ 5
thoughts on Xi Jinping
Format: Kindle
This book was highly organized and very easy to comprehend. I have formed a much better understanding of Xi Jinping and where he is taking China. Although I feel he has been thoughtful and successful in some areas such as improving China economically, I don’t feel his autocratic approach will succeed in the long run when more Chinese people will demand to be heard. Just as Mao thought didn’t outlast Mao, Xi thought will not outlast Xi.
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Reviewed in the United States on February 1, 2025
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James Muncy
Alexandria, US
★★★★★ 5
The Book I Meant to Write
Format: Kindle
While doing my master’s degree in international relations, I completed a master’s thesis on Xi Jinping Thought (which, like the authors, I shortened to Xi Thought). I considered writing a book on the subject since there wasn’t a lot in English, but I no longer feel the need. This book fills every gap that was present. Well written and informative, it is the quintessential English source in Xi Thought. The authors put Xi’s political thought in a consultative Leninist paradigm and define that context clearly. Each chapter elucidates a little more and puts Xi thought front and center in China’s current transformation. I consider it a must read.
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Reviewed in the United States on March 19, 2024
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mike
Louisville, US
★★★★★ 5
Great read and most importantly very topical
Format: Audiobook
The writers use published work of Xi and Chinese government official statements to describe the true nature of this most important Chinese leader who will have profound impact on the total world.Like it or not it is essential for all of us to really what he is preparing his nation for the vision he has.Americans are naive and totally ignorant.
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Reviewed in the United States on July 19, 2025

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