SKU: 67103919995

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

Sale price$1083.15 Regular price$1203.50
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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


 

 

Shipping Notes
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Exchange/Return Notes
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SKU: 67103919995

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ViperMageEx
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★★★★★ 3
Low quality socks.
Size: Large, Color: (001) Black / Black / Castlerock
I have been buying Under Armour undergarments for years and have noticed a steady decline in quality. These socks are no different. I purchased another six packs of very similar styled Under Armour socks in 2023 and recently they have started wearing out. Those socks are no longer available for reorder, but these extremely similar socks were so I ordered them. The quality difference is obvious just by looking at and feeling them. They are more of a faded black/brown than the black pictured or the black that the three year old socks still are. The material is completely different and feels lighter. When wearing them they already feel like they are bunching up in my shoes, which the old ones never did. I do not expect these to last even a year and will not buy them again.
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Reviewed in the United States on March 29, 2026
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Regina Hall
Grantham, US
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My sons loves them. They are all he wears.
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Bibiana colon
Phoenix, US
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Muy buenas, cómodas me encantaron
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K M
Battle Creek, US
★★★★★ 5
Excellent sport sock!
Size: One Size, Color: (100) White / White / Halo Gray
Molds onto foot, super soft and breathable. A lot of my ankle socks tend to slip or cut off blood circulation. This one literally is a perfect fit. No slip. After playing hours of tennis every week, my feet don't feel sore or bruised. Must buy!
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Comfort!
Size: One Size, Color: (100) White / White / Halo Gray
Very comfortable! Thinner than the picture shows, but I like the fact that they are no show but still higher in the back and front to protect my heels and such.
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Reviewed in the United States on September 6, 2025

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