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BMW 5-Series (G30) Forum Cosmetic Modifications 2021 m550i Rear Diffuser

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      12-16-2024, 03:31 PM   #1
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2021 m550i Rear Diffuser

Can someone please recommend where I can purchase a well made rear diffuser for my 2021 m550i? Thanks
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      12-17-2024, 09:39 AM   #2
Joe-BMW33
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Originally Posted by PORT001 View Post
Can someone please recommend where I can purchase a well made rear diffuser for my 2021 m550i? Thanks
What are you looking for and how much do you want to spend? Do you want carbon fiber? Is it for the stock tips or are you getting an upgraded exhaust and new tips, etc.

Here is mine. Gloss black and relatively inexpensive. Fit's well.
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2018 M550ix|Carbon Black|Dinan Modifications|2003 540i|Jet Black|M-Sport|2021 X5 Mineral White
Prior BMW's: 1987 325e|1993 740i|1998 740il|2001 530i|2002 745li|2007 750li|2006 750li|2001 530i|2012 535xi|
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      12-18-2024, 03:54 PM   #3
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Joe, I'm interested in where you purchased every piece in the kit. Going to continue with stock exhaust for now but planning to upgrade next year so if its better to wait I can hold off on the rear splitter but I'd like to purchase and install the rest of the kit. TIA.

I checked BMW's shopping website today and couldn't find anything for my 2018. I guess the car is old enough now they don't care to try and sell anything for it. Does anyone still carry the OEM BMW Aero pieces?
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      12-19-2024, 02:34 AM   #4
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Originally Posted by txm550i View Post
Joe, I'm interested in where you purchased every piece in the kit. Going to continue with stock exhaust for now but planning to upgrade next year so if its better to wait I can hold off on the rear splitter but I'd like to purchase and install the rest of the kit. TIA.

I checked BMW's shopping website today and couldn't find anything for my 2018. I guess the car is old enough now they don't care to try and sell anything for it. Does anyone still carry the OEM BMW Aero pieces?
I peiced what you see here together and tried to stick with ///M Performace or BMW style parts, meaning they were offered once.

Exhaust it a full Dinan catback
Rear Diffuser is ///M Performance Style from eBay https://www.ebay.com/itm/22430179774...mis&media=COPY
Spoiler is RW Carbon M5CS
Front Grill OEM ///M Performance Gloss Black
Dinan 12/20 Spacers
OEM LCI Euro Tails


Pretty sure that’s all I’ve done cosmetically.
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2018 M550ix|Carbon Black|Dinan Modifications|2003 540i|Jet Black|M-Sport|2021 X5 Mineral White
Prior BMW's: 1987 325e|1993 740i|1998 740il|2001 530i|2002 745li|2007 750li|2006 750li|2001 530i|2012 535xi|

Last edited by Joe-BMW33; 12-19-2024 at 02:37 AM..
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      12-19-2024, 01:24 PM   #5
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Is it still possible to get the OEM BMW pieces? Probably not affordable but would like to look at them and check pricing. Confirming availability again would be nice. If not, I'm happy to look at aftermarket pieces as well.
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      12-19-2024, 03:34 PM   #6
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Originally Posted by txm550i View Post
Is it still possible to get the OEM BMW pieces? Probably not affordable but would like to look at them and check pricing. Confirming availability again would be nice. If not, I'm happy to look at aftermarket pieces as well.
I suggest you do some research on your own. Google is your friend. I weighed in. I can’t answe open ended questions with confidence unless I google for you.
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Prior BMW's: 1987 325e|1993 740i|1998 740il|2001 530i|2002 745li|2007 750li|2006 750li|2001 530i|2012 535xi|

Last edited by Joe-BMW33; 12-19-2024 at 03:35 PM..
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      12-23-2024, 04:40 PM   #7
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Yeah thanks. I did some quick searching and didn’t see much. Wasn’t trying to be lazy. I’ve chatted with you here often and you have the same make and model as I do. It just caught me off guard when I couldn’t find anything on BMWs site anymore. I figured you’d probably know if anyone else was still carrying it. I’ll do more research. Thanks for the replies. I do appreciate it.
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      12-24-2024, 04:13 AM   #8
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Quote:
Originally Posted by txm550i View Post
Yeah thanks. I did some quick searching and didn’t see much. Wasn’t trying to be lazy. I’ve chatted with you here often and you have the same make and model as I do. It just caught me off guard when I couldn’t find anything on BMWs site anymore. I figured you’d probably know if anyone else was still carrying it. I’ll do more research. Thanks for the replies. I do appreciate it.
Sorry buddy, didn’t mean to come across with a sharp tongue. Diffusers for these cars that fit 4” quads are at a premium. My homework was done over two years ago and since I’m happy with my choice I honestly haven’t been up on the latest and greatest.

Sorry about that, I see how it came across. Merry Christmas and keep me posted.
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      12-26-2024, 11:50 AM   #9
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We have a G30 LCI diffuser. If you have any questions, feel free to contact us.

https://www.rwcarbon.com/bmw-g30-5-s...-diffuser.html
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      01-04-2025, 09:21 PM   #10
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Quote:
Originally Posted by Joe-BMW33 View Post
I peiced what you see here together and tried to stick with ///M Performace or BMW style parts, meaning they were offered once.

Exhaust it a full Dinan catback
Rear Diffuser is ///M Performance Style from eBay https://www.ebay.com/itm/22430179774...mis&media=COPY
Spoiler is RW Carbon M5CS
Front Grill OEM ///M Performance Gloss Black
Dinan 12/20 Spacers
OEM LCI Euro Tails


Pretty sure that’s all I’ve done cosmetically.
I installed this diffuser this afternoon. Previous owner had a stealth hitch installed, so I didn't have the lower piece on the car, nor the hardware associated with it. The stock piece was simply held on by the plastic tabs and the two outermost screws. Was able to source some fasteners and get the new one installed with five total on the bottom. I may eventually put it on some ramps to get back under there and see if there are any more points to secure it later. Possibly a self tapper behind the reflectors for security. Gave it some tugs, but it seems fairly solid.
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      01-05-2025, 01:10 AM   #11
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Quote:
Originally Posted by Greg Kulbick View Post
I installed this diffuser this afternoon. Previous owner had a stealth hitch installed, so I didn't have the lower piece on the car, nor the hardware associated with it. The stock piece was simply held on by the plastic tabs and the two outermost screws. Was able to source some fasteners and get the new one installed with five total on the bottom. I may eventually put it on some ramps to get back under there and see if there are any more points to secure it later. Possibly a self tapper behind the reflectors for security. Gave it some tugs, but it seems fairly solid.
Five of the ten screws is what back in for me too. Plenty secure.
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Prior BMW's: 1987 325e|1993 740i|1998 740il|2001 530i|2002 745li|2007 750li|2006 750li|2001 530i|2012 535xi|
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