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Description
Dinan Free Flow Axle-Back Exhaust for 2020-2024 BMW M340i/M440i D660-0085-BLKDinan 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, ceramic black 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 |
| Sale Category | Exhaust |
| Tip Finish | Black Ceramic Coated |
| 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 17 reviews
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Product Reviews
★★★★★ 5
surprised me
I absolutely love this shoulder bag! The quality really surprised me and in a good way. The faux leather has such a smooth, polished look and feels soft but still very durable. It honestly gives that high-end vibe without the expensive price tag. The size is perfect for everyday use. It’s roomy enough to fit all my essentials like my phone, wallet, keys, and even some extra items like makeup, but it doesn’t feel bulky or oversized. I also really appreciate the inner pockets because they help keep everything organized instead of just throwing everything into one big space. Another thing I love is how practical it is. The material is water-resistant, which is a huge plus and if anything spills or it gets a little wet, it’s super easy to just wipe clean. It still looks brand new after using it regularly. The design is simple but very stylish, which makes it easy to pair with almost any outfit. I’ve worn it casually, out running errands, and even with more dressed-up looks, and it always works. It’s definitely one of those go-to bags you can grab every day. This bag is a great mix of style, functionality, and durability. I’m really impressed with it and would definitely recommend it if you’re looking for a cute, everyday handbag!
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Perfect Everyday Bag That Goes with Everything
This purse is everything! I love the size, the material, and the fact that it has the perfect amount of compartments to keep everything organized without feeling bulky. It’s officially become my everyday bag.
The strap is the perfect length and feels really sturdy. It’s cute enough for casual days but also works for going out to dinner, which I love. I’m always looking for something versatile since I don’t like switching bags all the time, and this one checks all the boxes.
The zipper is smooth and feels durable, not flimsy at all. Overall, it feels well made, looks great, and holds up to daily use. Definitely a great find!
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Reviewed in the United States on March 27, 2026
★★★★★ 5
LOVE this bag so much!!!
Color: White, Color: White
My favorite purse purchase on amazon!! So pretty and worth every penny I spent on it!! LOVE this purse so much. Pure white which is so hard to find. I love the long strap and short gold strap option. I did add another strap for fun in the picture that I also bought on Amazon but love this so much. The leather is soft too! Very versatile bag for summer and spring!!
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Reviewed in the United States on August 24, 2025
★★★★★ 5
Versatile, Elegant, Looks Expensive
Color: Black, Color: Black
I purchased this purse in black and tan, and love them the both. The tan is a true tan (my pic makes it look whiter/lighter); the black is a rich, deep black. The gold hardware is a gilded gold, not brassy gold and looks expensive. I added purse extenders (gold balls on the tan and black hearts on the black) that I purchased separately on Amazon to personalize the look, and am even more in love. The purses themselves are high quality pebbled leather, lined with a deep zippered side pocket on the inside. The zippers zip smoothly and easily. The hardware clasps of the crossbody chain seem sturdy and can be removed or altered easily, allowing for a variety of styles and looks. The crossbody chain lays flat and doesn’t tangle snag, kink, or pinch when worn. I am pleasantly surprised with the overall quality given the incredible price. I highly recommend this purse for its elegance, versatility, and quality.
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Reviewed in the United States on April 27, 2024
★★★★★ 5
Real leather!
Color: Black
There is nothing more disappointing than grabbing a favorite (vegan leather/pleather/vinyl/man-made exterior) purse out of the closet only to find that it has started to peel and disintegrate. No more!! From now on, I'm only buying leather, and this purse is real leather! Beautiful dand large enough for cell phone, comb, lipstick, glasses, and credit cards/cash, with a design that can transition from daytime to night. This purse is a winner!
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Reviewed in the United States on April 23, 2025