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Description
Dinan Free Flow Axle-Back Exhaust for 2020-2024 BMW M340i/M440i D660-0085Dinan Free Flow Axle Back Exhaust 2020 2024 BMW M340i M440i 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 now with the release of the Dinan axle back exhaust system for the G20 M340i and G2x M440i.
Dinan Free Flow Axle-Back Exhaust - 2020-2024 BMW M340i/M440i
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 now with the release of the Dinan axle back exhaust system for the G20 M340i and G2x M440i.
Features:
- More Power: +?6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM
- Enjoyably louder, sportier sound
- Quad 4" diameter clamp-on, double-walled, polished and laser engraved exhaust tips
- 100% 304 stainless steel construction
- Larger diameter piping for increased flow (76mm vs 70mm)
- 4 lbs 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
- Easy bolt-on installation with included mounting hardware
Specs:
| Brand | Dinan |
|---|---|
| Dinan Point Value | 3 |
| Emission Code | 5 |
| Height | 10 |
| Labor Time (Hours) | 2.5 |
| Length | 54 |
| Max HP Gain | 6 @ 6600 RPM |
| Max Torque (lb-ft) Gain | 5 @ 6600 RPM |
| Product Type | Axle-Back Exhaust |
| Tip Finish | Polished |
| Warning | California Proposition 65 |
| Weight | 68 |
| Width | 29 |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2024 | BMW | M340i | Base |
| 2020-2024 | BMW | M340i xDrive | Base |
| 2021-2024 | BMW | M440i xDrive | Base |
| 2021-2024 | BMW | M440i | Base |
| 2022-2024 | BMW | M440i | Base |
| 2022-2024 | BMW | M440i xDrive Gran Coupe | Base |
| 2022-2024 | BMW | M440i Gran Coupe | Base |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 1802 reviews
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Product Reviews
★★★★★ 5
Beautiful and sturdy
Color: Bronze, Color: Bronze
This piece is far superior than I expected. It is beautiful and sturdy. I don't have a lot of fancy jewelry. I just have several everyday pieces with a few unique pieces. This tree was perfect. It is attractive, like a unique piece of jewelry itself.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2024
★★★★★ 5
Beautiful and Functional Desk Upgrade
Color: Pink Marble-31.5"x15.8"(with Wall Charger)
I absolutely love this Pink Marble Mouse Pad with 15W Wireless Charging. The design is beautiful, soft, and feminine without being too much, and it instantly makes my desk look more polished and organized. The large size is perfect because it gives me plenty of room for my keyboard, mouse, notebook, and other desk essentials while still keeping everything looking neat.
The wireless charging feature is such a convenient bonus. I love being able to place my phone down and charge it while I work without having extra cords everywhere. The surface is smooth, my mouse glides easily, and the pad feels comfortable during long hours at my desk.
Overall, this is a great mix of style and function. It is perfect for a home office, gaming setup, content creation space, or anyone who wants their desk to look cute and stay practical. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Works Well and Good Quality
Color: Black-Stock Market-31.5"x15.8"(with Wall Charger)
The recharging feature works well for both phone and earbuds. Phone charges very fast. Great looking mousepad that has ample size for both keyboard and mouse. Mouse moves easily on the surface and is much better than using it solely on a tabletop. Great price too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
★★★★★ 5
A pad that just delivers
Color: Black-31.5"x15.8"
The item came in minimalist packaging. The mat came out and was ready to use immediately. The build quality is great with no distortions in shape that I had with a lower quality gaming mouse pad I was gifted once. The wireless charging just worked, and true to word, if I place my phone just right on the spot it engaged turbo wireless charging.
It felt great, smooth like a high quality mouse pad, just huge. I can fit my laptop, keyboard and mouse with room to spare.
Don't regret decision to buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
★★★★★ 4
Check to see if you need an adapter
Color: Black-Phone Holder-31.5"x15.8"
Very nice pad, good size and neat looking. Charges the phone and do not need a separate charger.
ONE WORD OF CAUTION. I expected to be able to hook it up and use as delivered. BUT, expecting a USB
compatible wire that fits into a normal plug, I needed an adapter to be able to plug it into a plug adapter.
The ad needs to be able to highlight the fact that you may need an adapter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
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