Need recommendations on aftermarket diffuser

jck624 · 07-27-2017, 07:41 AM

Hi all,
I'm looking to acquire an after market rear carbon diffuser. I know that a lot of them come from China and may not fit like an oem. Any recommendations on a cost effective aftermarket one would be greatly appreciated! Thank you!

New f83 fire orange ZCP owner

///M/// · 07-27-2017, 08:01 AM

M performance since it fits like a glove. You could try a few other more aggressive aftermarket options but the fitment is never 100%. I have a RKP diffuser and had to exchange the first one due to bad fitment. Also bought a Vorsteiner one in between which didn't fit at all so had to return it.

F83 · 07-27-2017, 08:33 AM

Quote:

Originally Posted by ///M///

M performance since it fits like a glove. You could try a few other more aggressive aftermarket options but the fitment is never 100%. I have a RKP diffuser and had to exchange the first one due to bad fitment. Also bought a Vorsteiner one in between which didn't fit at all so had to return it.

^this

If you are anal about fitment you need to just go M Performance and call it a day. Every non OEM carbon fiber bit I've bought ended up in the trash bin because the fitment was not acceptable for an $80k car. M Performance fits like a glove.

Bch53211 · 07-27-2017, 08:50 AM

I bought an aftermarket one from IND in Chicago - looks great and fits perfectly except it interferes w the trunk mechanism that responds to your "kick" motion.

jck624 · 07-27-2017, 09:27 AM

Quote:

Originally Posted by F83

^this

If you are anal about fitment you need to just go M Performance and call it a day. Every non OEM carbon fiber bit I've bought ended up in the trash bin because the fitment was not acceptable for an $80k car. M Performance fits like a glove.

$92,574 but those are just numbers.

Thanks! I feared but didn't want to go M performance route.

///M/// · 07-27-2017, 10:29 AM

Quote:

Originally Posted by Bch53211

I bought an aftermarket one from IND in Chicago - looks great and fits perfectly except it interferes w the trunk mechanism that responds to your "kick" motion.

Did you install it yourself?

Bch53211 · 07-27-2017, 11:41 AM

no , what are you implying?

///M/// · 07-27-2017, 12:29 PM

Quote:

Originally Posted by Bch53211

no , what are you implying?

Usually requires some sort of re-adjustment, pushing, shoving, whatever you want to call it. The first one I ordered from IND, I had to return because there was absolutely no way it lined up. The second one was 95% on fitment (all the tabs didn't click in) but I modified it to fit. Didn't want to go through the hassle of another return/exchange. Just to be clear I am not bashing IND. Their customer service and response was spot-on. I am just pointing out that fitment on non-oem parts especially CF ones is never perfect. It is a lot more apparent when you are the installer.

scott13 · 07-27-2017, 12:55 PM

YMMV, but for me, RKP fit flawlessly...like it was meant to be there.

I don't have direct experience with other aftermarket diffusers, but it seems to me like the higher cost options have a higher chance of perfect fitment than the lower cost options. But I can imagine that some high cost options don't always fit perfectly and some low cost options sometimes fit just fine. I figure it as more of an odds of success thing.

Spoolin Montego · 07-27-2017, 03:19 PM

Quote:

Originally Posted by ///M///

Usually requires some sort of re-adjustment, pushing, shoving, whatever you want to call it. The first one I ordered from IND, I had to return because there was absolutely no way it lined up. The second one was 95% on fitment (all the tabs didn't click in) but I modified it to fit. Didn't want to go through the hassle of another return/exchange. Just to be clear I am not bashing IND. Their customer service and response was spot-on. I am just pointing out that fitment on non-oem parts especially CF ones is never perfect. It is a lot more apparent when you are the installer.

OEM CF diffuser never works with the kick sensor no matter how you align it.

///M/// · 07-27-2017, 11:31 PM

Quote:

Originally Posted by Spoolin Montego

OEM CF diffuser never works with the kick sensor no matter how you align it.

It is not designed to work with the kick sensor.

TXS · 07-30-2017, 10:49 PM

Quote:

Originally Posted by ///M///

It is not designed to work with the kick sensor.

I actually have a friend who installed his diffuser and moved the sensor around so that it could work. Not sure how he did it but he has a diffuser and the kick open sensor still functions.

skalberti · 08-01-2017, 09:44 AM

Quote:

Originally Posted by jck624

Hi all,
I'm looking to acquire an after market rear carbon diffuser. I know that a lot of them come from China and may not fit like an oem. Any recommendations on a cost effective aftermarket one would be greatly appreciated! Thank you!

New f83 fire orange ZCP owner

Give Mode Carbon a look. I have the R1 that's fits perfect with no modifications needed and the weave and finish is perfect.

jck624 · 08-01-2017, 10:18 PM

Quote:

Originally Posted by skalberti

Quote:

Originally Posted by jck624

Hi all,
I'm looking to acquire an after market rear carbon diffuser. I know that a lot of them come from China and may not fit like an oem. Any recommendations on a cost effective aftermarket one would be greatly appreciated! Thank you!

New f83 fire orange ZCP owner

Give Mode Carbon a look. I have the R1 that's fits perfect with no modifications needed and the weave and finish is perfect.

Thanks. I just bought one so we'll see how the fitment is. Crossing my fingers??

SakhirM4 · 08-01-2017, 10:39 PM

I got this one from Walmart for $389. Looks great and fitment was perfect. Yes, it is made in China.

https://www.walmart.com/ip/Vicrez-BM...0425/605801800

Name: diffuser - 1.jpg
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Size: 79.0 KB

Name: diffuser - 1.jpg
Views: 1748
Size: 79.0 KB

Alvinized52 · 08-01-2017, 10:41 PM

MTC Design (formerly EXotics Tuning) is what i ended up with. Perfect fitment. Outstanding quality.

Nomana · 08-02-2017, 06:41 AM

Quote:

Originally Posted by SakhirM4

I got this one from Walmart for $389. Looks great and fitment was perfect. Yes, it is made in China.

https://www.walmart.com/ip/Vicrez-BM...0425/605801800

Attachment 1667799

Wow

Never expected to see this thing sold in Walmart

Bahn360Photo · 08-02-2017, 08:34 AM

got acra replica for 150$ ebay, fitment is perfect

jck624 · 08-02-2017, 11:44 AM

I appreciate all the info gentlemen. I ended up buying one off eBay. I hope this one fits. I'll post pictures after attempting. Hope its not a fail.

jck624 · 08-12-2017, 07:19 PM

And.... Here we go!!!!!!!

Shoof · 08-19-2017, 11:50 PM

Quote:

Originally Posted by ///M///

It is not designed to work with the kick sensor.

Where exactly is the sensor? I was looking under my car the other day and didn't see it....and I have it for sure....any idea?

///M/// · 08-20-2017, 10:02 AM

Quote:

Originally Posted by Shoof

Where exactly is the sensor? I was looking under my car the other day and didn't see it....and I have it for sure....any idea?

Sorry I never bothered to find out wear it is as I never cared for the kick feature. Always used the keys or just opened the trunk.

07-27-2017, 07:41 AM	#1
jck624 New Member 15 Rep 24 Posts Drives: f83 fire orange Join Date: Jul 2017 Location: rockville iTrader: (0)	Need recommendations on aftermarket diffuser Hi all, I'm looking to acquire an after market rear carbon diffuser. I know that a lot of them come from China and may not fit like an oem. Any recommendations on a cost effective aftermarket one would be greatly appreciated! Thank you! New f83 fire orange ZCP owner
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07-27-2017, 08:01 AM	#2
///M/// Brigadier General 1862 Rep 3,661 Posts Drives: 2016 Manual AW F80 Join Date: Jul 2009 Location: Philly iTrader: (6)	M performance since it fits like a glove. You could try a few other more aggressive aftermarket options but the fitment is never 100%. I have a RKP diffuser and had to exchange the first one due to bad fitment. Also bought a Vorsteiner one in between which didn't fit at all so had to return it. __________________ ========================= 2016 F80 M3 AW/SO (Manual) - Picked up at the Welt 08/28/15 My Amazing European Delivery Story
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07-27-2017, 08:50 AM	#4
Bch53211 Major 728 Rep 1,250 Posts Drives: 2015 M4 Join Date: Aug 2015 Location: Shorewood, WI iTrader: (0) Garage List 2015 M4 [0.00] 2015 M4 [0.00] 2015 M4 [0.00]	I bought an aftermarket one from IND in Chicago - looks great and fits perfectly except it interferes w the trunk mechanism that responds to your "kick" motion.
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07-27-2017, 11:41 AM	#7
Bch53211 Major 728 Rep 1,250 Posts Drives: 2015 M4 Join Date: Aug 2015 Location: Shorewood, WI iTrader: (0) Garage List 2015 M4 [0.00] 2015 M4 [0.00] 2015 M4 [0.00]	no , what are you implying?
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07-27-2017, 12:55 PM	#9
scott13 First Lieutenant 346 Rep 366 Posts Drives: 2020 M4 \| BSM \| 6MT Join Date: May 2015 Location: New England (Boston Area) iTrader: (0)	YMMV, but for me, RKP fit flawlessly...like it was meant to be there. I don't have direct experience with other aftermarket diffusers, but it seems to me like the higher cost options have a higher chance of perfect fitment than the lower cost options. But I can imagine that some high cost options don't always fit perfectly and some low cost options sometimes fit just fine. I figure it as more of an odds of success thing.
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08-01-2017, 10:39 PM	#15
SakhirM4 Major General 10785 Rep 8,852 Posts Drives: '15 SO M4/'20 Z4 M40i Join Date: Jul 2014 Location: Austin, TX iTrader: (0) Garage List 2020 BMW Z4 M40i [10.00] 2015 BMW M4 [8.76]	I got this one from Walmart for $389. Looks great and fitment was perfect. Yes, it is made in China. https://www.walmart.com/ip/Vicrez-BM...0425/605801800 __________________ Tejas Chapter, BMW CCA, mem #23915, President 27 years, www.tejaschapter.org
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08-01-2017, 10:41 PM	#16
Alvinized52 @ste4lthedF82 882 Rep 1,498 Posts Drives: 2016 M4 SSII Join Date: Sep 2015 Location: Los Angeles iTrader: (1) Garage List 2016 BMW M4 [10.00]	MTC Design (formerly EXotics Tuning) is what i ended up with. Perfect fitment. Outstanding quality. Attached Images __________________ 2016 Satin SSII M4 (Instagram: @Ste4lthedF82) see my featured mods below... http://f80.bimmerpost.com/forums/sho....php?t=1197842
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08-02-2017, 08:34 AM	#18
Bahn360Photo Fitness Gene 1113 Rep 2,413 Posts Drives: 2018 M4 Join Date: Feb 2014 Location: SoFlo iTrader: (2) Garage List 2006 bmw m5 [10.00] 2016 bmw z4 35is [8.33] 2000 bmw m5 [10.00] 2018 BMW M4 [10.00] 1987 BMW 325 Conver ... [10.00]	got acra replica for 150$ ebay, fitment is perfect __________________ Effective 11 Min Home Workouts????? No equipment????? 20 years of experience Spartan Race winner PROtrainer! Click the link?? https://www.youtube.com/c/FitnessGene
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08-02-2017, 11:44 AM	#19
jck624 New Member 15 Rep 24 Posts Drives: f83 fire orange Join Date: Jul 2017 Location: rockville iTrader: (0)	I appreciate all the info gentlemen. I ended up buying one off eBay. I hope this one fits. I'll post pictures after attempting. Hope its not a fail.
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08-12-2017, 07:19 PM	#20
jck624 New Member 15 Rep 24 Posts Drives: f83 fire orange Join Date: Jul 2017 Location: rockville iTrader: (0)	And.... Here we go!!!!!!! Attached Images
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