SKU: 25566593664

Dinan D660-0078-BLK Dinan Free Flow Axle-Back Exhaust - 2017-2020 BMW 540i

Sale price$922.47 Regular price$1024.97
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Ships within 48 hours · Estimated delivery Sep 25 - Sep 30

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Description

Dinan D660-0078-BLK Dinan Free Flow Axle-Back Exhaust - 2017-2020 BMW 540iOverview: Utilizing the same muffler as its B58 siblings the G30 540i exhaust improves 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 also accompany it are simply intoxicating. While on the exterior the sound may be viewed as aggressive

Overview:

Utilizing the same muffler as its B58 siblings the G30 540i exhaust improves 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 also accompany it are simply intoxicating. While on the exterior the sound may be viewed as aggressive the inside of the cabin is still civil courtesy of an incorporated Helmholtz chamber design that reduces resonance or"drone" at low RPM. While sound is of the utmost importance for any exhaust system the fit and finish are nearly equally as vital. The system is built to exacting specifications to ensure perfect fit using the factory hangers and is made from 100% 16 gauge 304 stainless steel that will resist corrosion for years to come. What is most different about the 540i system however is a completely new tip design from anything Dinan has done prior. The use of twin, massive quadrilateral, black ceramic coated and engraved angled tips are hard not to to take notice of. With over 8" of width and 4" of height per tip, the rear of the 540i assumes a more aggressive demeanor with the Dinan exhaust system. A high-performance look that marries well with the tonal makeover.

Features:

  • More Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM
  • Helmholtz chamber to reduce drone
  • Enjoyably louder, sportier sound
  • 2 massive quadrilateral black ceramic coated tips with laser engraved Dinan logo
  • 100% 304 stainless steel construction
  • Factory computer controlled valve is eliminated for maximum flow and sound at all times
  • Uses the factory brackets and hangers for a factory-like fitment

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Dinan
Dinan Point Value 3
Emission Code 5
Height 12
Labor Time (Hours) 1.3
Length 55
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: 25566593664

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4.2 ★★★★★
Based on 23 reviews
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Verified Purchase
Jeannette Jaquish
Fort Morgan, US
★★★★★ 3
Too Short & Skewed Foot. Easy Build & Good Material.
Color: Black, Size: Upgraded Base-1 Panel, Color: Black, Size: Upgraded Base-1 Panel
The 3 partitions I purchased were of good material but were shorter than described and the "feet" on one end of all 3 partitions was skewed a few degrees so I cannot butt them together side by side. PHOTO #1: you see me who is 63.5 inches in my shoes standing next to the 72 inch described partition minus the wheels so it is fair to say it should be 70 inches. But even so, 70 inches minus 63.5 equals 6.5 inches that should be above my head and should not include the tip of the pole and a 6 inch gap below. PHOTO #2: shows the gap when a 90 degree good end is butted against the skewed end. Good material and easy construction but just make it taller and fix the jig that skews the bottom bracket weld.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2025
R
Verified Purchase
RogueVikingQueen
Grantham, US
★★★★★ 5
Great for “pop up home office”
Color: Grey, Size: Upgraded Base-4 Panel
If you need a space for a video conference in a hurry or to make a private corner for a kiddo to nap in this is a perfect divider that blocks light and separates spaces. It was easy to put together and collapses down to a flat panel for easy storage out of the way.
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Reviewed in the United States on May 23, 2024
W
Verified Purchase
Wesley
Boise, US
★★★★★ 1
It’s a hard no from me
Color: Black, Size: Upgraded Base-1 Panel
I ordered two of these black, single screen panels several months ago. I ordered an additional four I needed a few days ago so I would have the total of 6 that I ended up needing. I did so by clicking on my past order (2 screens) item page and simply placed my recent order for 4 more. Two of the six screens have bolts that don’t fully screw down, such that one of each panel’s four points where the screen attaches to the two legs isn’t fully screwed down and flush. As a result, the screen doesn’t stay entirely vertical -It’s warped askew. Also, 3 of the six screens are different heights than the other 3. It’s clear to me that this company has ZERO QUALITY CONTROL, as there’s not anything that is even adjustable on these screens that leaves room for user error. Additionally, there are four black rubber circles that come in the “parts/screws” bag that don’t have corresponding installation instructions in the instruction manual. Just spend a little more and go with a better quality product somewhere else.
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Reviewed in the United States on March 1, 2025
M
Verified Purchase
Matthew D
Charlottesville, US
★★★★★ 5
Great multipurpose wall
Color: Black, Size: Upgraded Base-1 Panel, Color: Black, Size: Upgraded Base-1 Panel
Perfect for her to hide behind
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Reviewed in the United States on April 5, 2026
J
Verified Purchase
Jeannie Moore
Pawtucket, US
★★★★★ 5
Love my socks!
They fit perfect!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026

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