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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
4.6 ★★★★★
Based on 392 reviews
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Product Reviews
★★★★★ 5
Look nice
Color: Hayes Brown, Color: Hayes Brown
“I recently purchased a Fossil wallet, and I couldn’t be happier with my choice! The leather feels premium and durable, and the stitching is precise, adding to its overall quality. It’s the perfect size to fit in my pocket comfortably while still offering plenty of room for cards, cash, and even coins. I love the sleek and timeless design that matches both casual and formal outfits. Fossil truly delivers on craftsmanship and style. Highly recommended for anyone looking for a reliable and stylish wallet!”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2024
★★★★★ 5
Buy it, will not be sorry
Color: Ingram Brown
Had previously ordered a Dockers Trifold after having two in the past, it fell apart within a couple weeks. This Fossil wallet, on the other hand, is VERY nice. Very happy with my new wallet, worth the extra $15-20
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
★★★★★ 5
Only wallet I've owned for 40+ years, I expect this 3rd one to last another 20 years
Color: Ingram Brown
This is the second wallet I ever bought after the original wallet given to me by my father wore out. I love the trifold wallet and this one has been perfect for me. It's made of all leather which is key to long life. All my wrangler jeans have a faded outline on the right front pocket where I carry it. It has multiple slips for my many credit cards, grocery reward cards, insurance cards, business cards, driver license and passport card. There are some pockets behind those for my library card (I seldom need it since I know the number by heart) and my America the Beautiful pass which I only need when I visit a national park.
The only complaint still remains from the first version and is that the pockets are about 1 mm to skinny on a new wallet. Maybe that's a good thing so everything doesn't fall out when I open it up to use it.
I'm highly partial and highly surprised this wallet is still being made. I'm looking forward to buying another one in 20 years.
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Reviewed in the United States on November 18, 2025
★★★★★ 5
Good purchase
Color: 6692：Silver strap&blue dial
I'm actually impressed that I haven't broke it yet I wear it split and firewood never take it off really only thing is the time is a little fast after a few weeks it'll be a couple minutes fast but I've had it for a few months now and it's still looks like a day I got it very good looking watch
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Great Watch and Worth The Price
Color: 6692：Silver strap&blue dial
My husband loves this watch. I looked at a watch (Bulova brand) it was $650 and it looks just like this watch. I bought this one instead and my husband wears it everyday and is happy with it. It was a great birthday present :) I saved money and so I was able to spend extra $$ on some things I wanted too… umm, maybe I shouldn’t of said that :) lol
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Reviewed in the United States on April 15, 2025
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