Dinan Free Flow Axle-Back Exhaust System with Black Tips for BMW M550i xDrive (G30) 2018-2023
The Dinan Free Flow Axle-Back Exhaust for the BMW G30 M550i marks a new chapter in Dinan's exhaust system design. This system is engineered to improve exhaust flow, reduce back pressure, and enhance power output, delivering gains of +8 HP and +6 lb-ft of torque at 6600 RPM. While retaining the brand's hallmark balance between a civilized tone and aggressive sound under acceleration, the M550i exhaust introduces a bold new design for the exhaust tips, which are now massive 4" diameter double-walled tips. These clamp-on tips are a first for Dinan, offering easy replacement or customization options without welding.
Like other Dinan exhausts, the M550i system features drone abatement technologies to minimize cabin noise at low RPM, ensuring a quiet and comfortable interior even during high-performance driving. The computer-controlled exhaust valves retained from the stock system modulate the sound, limiting noise during low-speed driving but opening fully under load to allow free exhaust flow and deliver a deep, throaty V8 tone. The result is a refined yet sporty note that accentuates the M550i’s performance.
Constructed from 100% 304 stainless steel, this exhaust system offers durability and resistance to corrosion, ensuring long-lasting performance. The system also provides a straightforward installation with a bolt-on design, utilizing the factory hangers and including all necessary mounting hardware.
Key Features:
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Power Gains: +8 HP and +6 lb-ft of torque at 6600 RPM
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Sound: Louder, sportier sound with controlled exhaust valves to manage noise at low speeds
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Drone Reduction: Incorporates technologies to reduce low-RPM drone, keeping the cabin quiet
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Exhaust Tips: Four 4" diameter double-walled, clamp-on tips available in polished or ceramic black finishes, laser engraved with the Dinan logo
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Material: 100% 304 stainless steel for durability and corrosion resistance
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Installation: Easy bolt-on installation with included hardware, using factory hangers for a seamless fit
| Brand |
Dinan |
| Dinan Point Value |
3 |
| Emission Code |
5 |
| Height |
16 |
| Labor Time (Hours) |
1.9 |
| Length |
66 |
| Max HP Gain |
8 @ 6600 RPM |
| Max Torque (lb-ft) Gain |
6 @ 6600 RPM |
| Product Type |
Axle-Back Exhaust |
| Sale Category |
Exhaust |
| Tip Finish |
Black Ceramic Coated |
| Weight |
73 |
| Width |
30 |
| UPC |
813725024660 |
| Part Number |
D660-0075-BLK |
Fitment Chart:
| Make |
Model |
Year |
BMW
|
M550i xDrive
|
2018-2023
|
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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