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      09-28-2019, 11:08 AM   #1
Dwaynos
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Carbon rear diffuser

I've seen a few people recently looking for genuine carbon diffusers for the M5. I came across a newly released OEM style diffuser made by JBSPEED. It looks awesome and at a fraction of the OEM price is a bargain. Has to be worth a look for anyone without one currently.

http://www.jbspeed.com/bmw-vacuumed-...free-shipping/
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      09-28-2019, 01:03 PM   #2
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Not really a bargain at $600

I paid £1100 for rear diffuser, rear spoiler and both wing mirror covers from BMW main dealer, all in Carbon
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      09-28-2019, 01:14 PM   #3
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You're right in that respect. $600 is £488. To some people though the extra £600 is the difference between being able to afford it and not. I appreciate that you get more items aswell but not everyone wants more than a diffuser.

The cheapest I've seen a genuine diffuser is £750. Again you're getting closer to the 1k mark which people, including me , shy away from.

You did get a bargain though with all your bits, if people are able to afford the extra then I urge them to do so.
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      09-28-2019, 02:58 PM   #4
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If anyone is interested then Alex at Cotswold BMW Cheltenham is the man to call
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      09-29-2019, 04:55 PM   #5
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Check out RW carbon's diffusers. I have their full diffuser replacement but they also have the one you are looking for.
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      09-30-2019, 01:42 AM   #6
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Quote:
Originally Posted by Ickdeep View Post
Check out RW carbon's diffusers. I have their full diffuser replacement but they also have the one you are looking for.
I'm not looking for one as I have the OEM one. Just thought I would share a link to a cheaper alternative.
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      10-02-2019, 11:20 AM   #7
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Quote:
Originally Posted by Ickdeep View Post
Check out RW carbon's diffusers. I have their full diffuser replacement but they also have the one you are looking for.
Just curious on the fitment, any adjustments required, or was it simply bolt on?
I'm debating with myself if I should go the ebay route and get something that has poor fitment, or go the expensive Vorsteiner route.
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      10-02-2019, 12:28 PM   #8
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Quote:
Originally Posted by Noggie View Post
Just curious on the fitment, any adjustments required, or was it simply bolt on?
I'm debating with myself if I should go the ebay route and get something that has poor fitment, or go the expensive Vorsteiner route.
With the RW carbon one (and a ebay one I had on my old 535i), I had to take the bumper off and use screws for the tabs. The tab's on most aftermarket diffusers aren't perfect. It does take some time but its definitely worth it.
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      10-03-2019, 02:21 PM   #9
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Quote:
Originally Posted by Ickdeep View Post
With the RW carbon one (and a ebay one I had on my old 535i), I had to take the bumper off and use screws for the tabs. The tab's on most aftermarket diffusers aren't perfect. It does take some time but its definitely worth it.
Thanks.

I bought a front lip for my old M550d, a M-Performance copy, that thing came with wrong screws (too short), fitment was really bad and needed some work to make it fit without damaging the paint.

Maybe I'll just go the Vorsteiner route.
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      10-03-2019, 02:45 PM   #10
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Quote:
Originally Posted by Noggie View Post
Thanks.

I bought a front lip for my old M550d, a M-Performance copy, that thing came with wrong screws (too short), fitment was really bad and needed some work to make it fit without damaging the paint.

Maybe I'll just go the Vorsteiner route.
if you budget for the Vorstenier, definitely go for that one. The reason why most people go with other brands or even Ebay is because its pretty much the same thing but A LOT cheaper than the original.
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      10-05-2019, 07:41 AM   #11
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Quote:
Originally Posted by Ickdeep View Post
if you budget for the Vorstenier, definitely go for that one. The reason why most people go with other brands or even Ebay is because its pretty much the same thing but A LOT cheaper than the original.
I would be willing to pay for a Vorsteiner if I knew that was a "perfect fit" with no need for modifications to mount or make it fit.
I will not pay premium just to pay premium.
If a "copy" is just as good as the original, I have no issues buying the copy.
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