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      03-01-2021, 08:40 PM   #1
m3forme2016
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M5 Comp Rear Diffuser

Does the M5 Comp have a CF Rear Diffuser? Is it the same as the M Performance CF Rear Diffuser?

https://www.shopbmwusa.com/product/6...--CARBON-FIBER
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      03-01-2021, 09:00 PM   #2
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The comp does not come standard with the M Performance CF diffuser, it must be added for additional cost. I have not seen whether the CS model may include it. I have a 21 Comp and paid for the diffuser to be installed at the port (there's no labor, just pay for the part).
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      03-01-2021, 10:10 PM   #3
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No you get the standard black diffuser like on every F90. The M Performance diffuser design is lovely. Get it if you can. The CS has it's own unique carbon diffuser.
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      03-02-2021, 05:08 AM   #4
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Quote:
Originally Posted by m3forme2016 View Post
Does the M5 Comp have a CF Rear Diffuser? Is it the same as the M Performance CF Rear Diffuser?

https://www.shopbmwusa.com/product/6...--CARBON-FIBER
If your thinking about getting it then I would recommend you do. It's an awesome touch! And combined with the M performance pro spoiler in carbon IMO really completes the car! 😊
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      03-02-2021, 08:47 AM   #5
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Originally Posted by BMA89 View Post
If your thinking about getting it then I would recommend you do. It's an awesome touch! And combined with the M performance pro spoiler in carbon IMO really completes the car! 😊
I agree! It looks clean and will compliment the back end (just ordered it on my build as well).
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      03-02-2021, 08:58 AM   #6
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Originally Posted by BMA89 View Post
If your thinking about getting it then I would recommend you do. It's an awesome touch! And combined with the M performance pro spoiler in carbon IMO really completes the car! 😊
This.

Just do it getting it port installed to roll into the lease is the best option.
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      03-02-2021, 12:58 PM   #7
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Its a nice touch.



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      03-02-2021, 01:33 PM   #8
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Originally Posted by Crumbs View Post
This.

Just do it getting it port installed to roll into the lease is the best option.
Exactly what I did and this is how it turned out....
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      03-02-2021, 01:39 PM   #9
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Originally Posted by faloppi88 View Post
Exactly what I did and this is how it turned out....


Looks great and nice to see this on BHG, which is what I am getting. I ordered the pro spoiler and rear diffuser with some other goodies.
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      03-02-2021, 08:23 PM   #10
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I have an order in for an April build M5 comp and wanted the carbon spoiler pro but was told they have now linked the Carbon Spoiler Pro option to the carbon fiber front splitter (i.e. you cannot add them separately) so it's another $2900 plus the cost of the spoiler. Not sure if this affects the CF rear diffuser, but would double check with the dealer
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      03-02-2021, 09:00 PM   #11
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Quote:
Originally Posted by ash84 View Post
I have an order in for an April build M5 comp and wanted the carbon spoiler pro but was told they have now linked the Carbon Spoiler Pro option to the carbon fiber front splitter (i.e. you cannot add them separately) so it's another $2900 plus the cost of the spoiler. Not sure if this affects the CF rear diffuser, but would double check with the dealer
Yeah the spoiler pro requires the front splitter, which a lot of members have reported recently. It has no bearing on the rear diffuser.
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      03-02-2021, 09:46 PM   #12
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Originally Posted by The5rivers View Post
Yeah the spoiler pro requires the front splitter, which a lot of members have reported recently. It has no bearing on the rear diffuser.
That sucks! I ordered my comp at the end of last year with January delivery and didn't have to purchase the front splitter. For whatever reason it's the one CF piece I don't prefer from a cosmetic standpoint. That and the side grills I didn't see as much value in.
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      03-02-2021, 10:33 PM   #13
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Yes, I'll be getting the Spoiler Pro and the CF Rear Diffuser.

Thanks for all the info!
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      03-03-2021, 06:07 AM   #14
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get one, they look great
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      03-03-2021, 06:22 AM   #15
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Additional part, not standard as noted above. Worth it imho, along with the Pro spoiler
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      03-03-2021, 07:25 AM   #16
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Quote:
Originally Posted by m3forme2016 View Post
Yes, I'll be getting the Spoiler Pro and the CF Rear Diffuser.

Thanks for all the info!
Nice! But remember if you are getting the spoiler pro, you will have to get the front splitter as well (it's a forced option unfortunately).

Just an FYI so you're not surprised like we all were!
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      03-03-2021, 07:37 AM   #17
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Quote:
Originally Posted by The5rivers View Post
Quote:
Originally Posted by m3forme2016 View Post
Yes, I'll be getting the Spoiler Pro and the CF Rear Diffuser.

Thanks for all the info!
Nice! But remember if you are getting the spoiler pro, you will have to get the front splitter as well (it's a forced option unfortunately).

Just an FYI so you're not surprised like we all were!
I just bought the spoiler and am going to do it myself. Done it on other cars in the past, and it's usually pretty easy, like in the video below. I just like working with my hands anyways. Have no interest in those front splitters.

RKP rear spoiler install:
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      03-03-2021, 08:51 AM   #18
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Quote:
Originally Posted by The5rivers View Post
Nice! But remember if you are getting the spoiler pro, you will have to get the front splitter as well (it's a forced option unfortunately).

Just an FYI so you're not surprised like we all were!
I ordered the carbon pro spoiler, carbon diffuser and the side skirt and was not forced to order the front splitter - and don't have the front splitter.

When did they start making the two items a package? I took delivery 12/30
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      03-03-2021, 09:09 AM   #19
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Quote:
Originally Posted by Oswiff View Post
I ordered the carbon pro spoiler, carbon diffuser and the side skirt and was not forced to order the front splitter - and don't have the front splitter.

When did they start making the two items a package? I took delivery 12/30
I believe this became a requirement starting in Jan 2021, and there are multiple data points of other members who were given the same information. I honestly don't know why.

My CA said that when he added one option (either spoiler pro or front splitter), the other option was "forced" on and he didn't know why, and spoke to his parts rep who also was confused.
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      03-03-2021, 09:35 AM   #20
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Love the fat ass rear with the diffuser and spoiler added
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      03-03-2021, 09:41 AM   #21
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Quote:
Originally Posted by The5rivers View Post
I believe this became a requirement starting in Jan 2021, and there are multiple data points of other members who were given the same information. I honestly don't know why.

My CA said that when he added one option (either spoiler pro or front splitter), the other option was "forced" on and he didn't know why, and spoke to his parts rep who also was confused.
I guess if you didn't want one or the other, you would just order the part you want from any of the sponsors on this forum. I did that on my first m5 but the flat spoiler that comes standard left an etch on the paint. It wasn't super noticeable but it was there.
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      03-03-2021, 11:06 AM   #22
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Quote:
Originally Posted by Oswiff View Post
I guess if you didn't want one or the other, you would just order the part you want from any of the sponsors on this forum. I did that on my first m5 but the flat spoiler that comes standard left an etch on the paint. It wasn't super noticeable but it was there.
Oh yeah for sure, there are definitely aftermarket/OEM options to explore if you don't want to get it port-installed. I debated on this as well but ultimately went the port-installed route to residualize the accessories and I didn't want to bother with installs after delivery.
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