SKU: 71091383671

Dinan Free Flow SS Exhaust for 16-19 BMW F30 340i F32 440i D660-0055-BLK

$742.48 $824.98
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Description

Dinan Free Flow SS Exhaust for 16-19 BMW F30 340i F32 440i D660-0055-BLKOverview: Dinan engineers designed the F30 340i and F32 440i exhaust to improve exhaust flow by reducing back pressure, resulting in increased power output and a great sporty sound that is civilized when you want it to be, and pleasantly aggressive under hard acceleration. Not only is the tone improved but the additional burbles and pops that come with it are simply intoxicating. Dinan also incorporates a Helmholtz chamber design that reduces

Overview:

Dinan engineers designed the F30 340i and F32 440i exhaust to improve exhaust flow by reducing back pressure, resulting in increased power output and a great sporty sound that is civilized when you want it to be, and pleasantly aggressive under hard acceleration. Not only is the tone improved but the additional burbles and pops that come with it are simply intoxicating. Dinan also incorporates a Helmholtz chamber design that reduces resonance or"drone" at low RPM. The system is built to exacting specifications to ensure the perfect fit using the factory hangers. It is made from 100% 16 gauge 304 stainless steel and will resist corrosion for years to come. The design features twin 89mm (3.5") polished or cermic black exhaust tips for a tasteful high-performance look. The factory computer-controlled exhaust valve is eliminated.

Features:

  • More Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM
  • Helmholtz chamber to reduce drone
  • Enjoyably louder, sportier sound
  • Twin 89mm (3.5") laser engraved, polished or ceramic black exhaust tips
  • 100% 304 stainless steel construction
  • Uses the factory brackets and hangers for a factory-like fitment

Application:

Year Make Model Submodel Engine Size
2016 BMW 340i xDrive 3L L6
2016 BMW 340i 3L L6
2017 BMW 440i xDrive 3L L6
2017 BMW 440i

Specs:

Brand Dinan
Dinan Point Value 3
Emission Code 5
Height 11
Labor Time (Hours) 1.2
Length 48
Material 304 Stainless Steel
Max HP Gain 6 @ 6600 RPM
Max Torque (lb-ft) Gain 5 @ 6600 RPM
Product Type Axle-Back Exhaust
Sound Level Aggressive / Moderate
System Type Axle-back
Warning California Proposition 65
Weight 45
Width 30
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 71091383671

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4.1 ★★★★★
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Jennifer Kuhns
Birmingham, US
★★★★★ 4
Soft...but fluffy and tall
Color: White, Size: Standard (Pack of 2)
I've only had these pillows for about a week. They are a great quality pillow. The cover is soft and seems well made. My only complaint is that they are VERY full pillows. If you're tall with broader shoulders, you'll probably love them. If you're shorter with a smaller frame you will probably feel like your head is too high and your neck at a weird angle (my problem). There seemed to be mixed reviews about softness....I would consider these a nice medium pillow. Soft filling but firm enough that your head doesn't sink to the bed. Definitely NOT a down-like pillow, so if that's what you're looking for, this is not for you.
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Reviewed in the United States on April 10, 2026
M
Verified Purchase
Mimis cake school
Grantham, US
★★★★★ 5
Finally! Comfy pillows for a😴good night sleep
Color: White, Size: Queen (Pack of 4)
Just wow!! Looking for new pillows that are comfortable & hold their shape. These are it ! I love anything by utopia. And these pillows did not disappoint. Great value. Feels like a high end pillow. As a side sleeper these are a keeper. Highly recommend. And ill be purchasing more!
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Reviewed in the United States on May 18, 2026
M
Verified Purchase
Maria Fernanda Rojas Mejia
Grantham, US
★★★★★ 5
Soft, fluffy and surprisingly comfortable
Color: White, Size: Queen (Pack of 2), Color: White, Size: Queen (Pack of 2)
I really liked these pillows. I tried to show different things in my photos because I wanted people to see the details: the design, how fluffy they are, and how full and thick they actually look. They are so full that the pillowcase even looks tight once you put it on, which I actually loved because they look luxurious and well-filled. At first glance they look very thick and high, but once you lay down they feel soft and fluffy instead of hard. They adjust comfortably and feel very cozy whether you’re sleeping, relaxing, or even reading before bed. I think they offer a really good balance because they feel supportive without being stiff. Of course, pillow preference is very personal—some people like lower pillows and others like higher ones—but for someone who likes fuller pillows that are still soft and comfortable, these are great. They are spacious, cozy, and feel like a very good purchase overall. I honestly don’t have any complaints so far. Definitely happy with them.
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Reviewed in the United States on May 15, 2026
R
Verified Purchase
RF
Fort Morgan, US
★★★★★ 5
Great quality pillows. Very difficult wrapping.
Color: White, Size: King (Pack of 2)
The Pillows are the real deal. Very fluffy but with good support. I was surprised by the weight of the box they came in, pretty heavy so you know there’s good quality pillows inside. The one negative is that the pillows are packed in very very tight plastic because they come compressed. But the thing is, it’s really a chore to open them. You have to be careful not to cut through the plastic to the material, but the plastic is put on so incredibly tight that it’s even hard to get your finger underneath. But I found a way to open them. Near the top, insert A very flat metal ruler as far in as you could get it. Then cut through the plastic that’s above the metal ruler. That prevents a sharp tool from damaging the pillows. As you get through the plastic above the ruler, keep pushing the ruler further down into the package. Believe me, this simplifies what could be a very difficult unpacking. I am very surprised that the company that makes them does not insert the type of opener that you find on boxes you receive in the mail or even packages that you get from the grocery store where you just pull a tab and that opens the package. These are really good pillows, but you must be very careful about using a sharp object when opening the box and when trying to cut through the plastic. I am a strong man and have the tools needed, a very flat metal ruler, and a box cutter, knife, or razor. Good luck. !!
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Reviewed in the United States on May 5, 2026
S
Verified Purchase
smiffysfc
Birmingham, US
★★★★★ 5
Comfy, supportive pillow.
Color: White, Size: Queen (Pack of 2)
The 2 queen sized pillows fluffed right out of the package. Very soft to the touch like laying your head in a marshmallow, nice support, and so comfortable. My neck did not hurt and I rested good. I usually use a My Pillow but these are just as nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026

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