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Retro fitting 2019 rear diffuser and exhaust tips to pre facelift ?

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Old 12-28-2018, 02:52 PM
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Retro fitting 2019 rear diffuser a s exhaust tips- update now completed

Seen a few threads that touch upon this subject but not seen any part numbers or anyone who has done it yet? We have several who have done the front grill and lower grills with part numbers but no rears yet?

Whats people’s thoughts? The new tailpipes look bigger and a bit tougher IMO. Also the c63s seems to come with the lower diffuser similar to the pre facelift Ed 1 and also is it gloss black as apose to the cheap plastic finish of the current one?

So, anyone doing or or done it? Any part numbers for the diffuser with lower spoiler and pipes? Pics please..

Last edited by NJ 1161; 07-24-2019 at 05:12 PM.
Old 12-29-2018, 05:23 AM
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Originally Posted by NJ 1161
Seen a few threads that touch upon this subject but not seen any part numbers or anyone who has done it yet? We have several who have done the front grill and lower grills with part numbers but no rears yet?

Whats people’s thoughts? The new tailpipes look bigger and a bit tougher IMO. Also the c63s seems to come with the lower diffuser similar to the pre facelift Ed 1 and also is it gloss black as apose to the cheap plastic finish of the current one?

So, anyone doing or or done it? Any part numbers for the diffuser with lower spoiler and pipes? Pics please..
Planning the same. I believe is plug and play as the grill but waiting for confirmation.

No parts number yet
Old 12-30-2018, 04:51 PM
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Is there a carbon version of the facelift rear diffuser? I haven't seen any pics of it in carbon yet.
Old 12-30-2018, 05:40 PM
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Yes there is a carbon fiber option



Old 12-31-2018, 02:06 PM
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Looks neat. What variations are available? Is it the 63s version that has the undertray similar to the pre facelift ed1 rear diffuser?
Old 01-05-2019, 05:53 AM
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Originally Posted by NJ 1161
Looks neat. What variations are available? Is it the 63s version that has the undertray similar to the pre facelift ed1 rear diffuser?
As far as I know there are the carbon fibre version and the gloss black version.

Also you have standard or the sportier version with the aero pack, similar to de ed1
Old 01-05-2019, 06:54 AM
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Originally Posted by japamg


As far as I know there are the carbon fibre version and the gloss black version.

Also you have standard or the sportier version with the aero pack, similar to de ed1
standard naff plastic rear diffuser currently but have a new edition 1 gloss rear diffuser to go on. Now pondering if I should sell ed1 RD and do the rear update. Not sure which I like best. Looking at pics I think the old edition 1 but I’ve bought the facelift front grills so feel it will be better matching?
Old 01-05-2019, 07:17 AM
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Originally Posted by NJ 1161


standard naff plastic rear diffuser currently but have a new edition 1 gloss rear diffuser to go on. Now pondering if I should sell ed1 RD and do the rear update. Not sure which I like best. Looking at pics I think the old edition 1 but I’ve bought the facelift front grills so feel it will be better matching?
We are at the same point

I have updated front grill but already have ed1 rear diffuser with carbon fibre, so not sure if I prefer mine over carbon fibre facelift. The only thing is the larger tailpipes

This is my current configuration






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Old 01-06-2019, 03:51 PM
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Still not sure which direction to go in. Looking at pics ed1 looks tougher! 2019 looks rounded and a bit soft! Yes the bigger tail pipes and the fact it’s the facelift version still tempt me. And also it’s all gloss black! Guess we need some ££££. Seen a rear valance and tailpipes on eBay for £1100 but it the basic version with no undertray. Will email my parts guy and see what he can come up with but generally he isn’t that useful without a part no!
Old 01-06-2019, 04:14 PM
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What I know is if I decide to make the change I will go for the carbon fiber option

Let’s see if we can find out part numbers!
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Old 01-07-2019, 02:32 PM
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Originally Posted by japamg
What I know is if I decide to make the change I will go for the carbon fiber option

Let’s see if we can find out part numbers!
Would love carbon but trouble is once you start everything has to match and gets very expensive if retro fitting it all. CF for mercy seems silly expensive here in the uk also for Mercs! You can add carbon galore to an m4/m3 for the price of 1 Oem bit for a merc!

Hopefully someone one can get part number for this soon so I can make a decision!
Old 01-30-2019, 05:14 PM
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Did you find out the part number?
Old 01-30-2019, 06:36 PM
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Originally Posted by NJ 1161
Looks neat. What variations are available? Is it the 63s version that has the undertray similar to the pre facelift ed1 rear diffuser?
That's the rear splitter, which is part of the new AMG Aerodynamic package (Coupe only). Edition 1 came with something similar to the AMG Aerodynamic package. There is a CF rear diffuser, but then when you add the Aero package on top it adds a gloss black splitter to the rear diffuser. That's what the closeup picture above shows. The splitter wraps around the exhaust tips and then goes along the underside of the diffuser. No idea about the part numbers, though and we've yet to see pictures of an actual US spec coupe with both CF packages and the Areo package. I've got one on order, but I won't take delivery until May and the other one I know of is @purplewidow build, who might take delivery around March. There are a bunch with the Aero package already delivered, but nobody seems to have taken delivery yet of one with the CF and Aero packages.
Old 01-31-2019, 02:42 PM
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Originally Posted by superswiss
That's the rear splitter, which is part of the new AMG Aerodynamic package (Coupe only). Edition 1 came with something similar to the AMG Aerodynamic package. There is a CF rear diffuser, but then when you add the Aero package on top it adds a gloss black splitter to the rear diffuser. That's what the closeup picture above shows. The splitter wraps around the exhaust tips and then goes along the underside of the diffuser. No idea about the part numbers, though and we've yet to see pictures of an actual US spec coupe with both CF packages and the Areo package. I've got one on order, but I won't take delivery until May and the other one I know of is @purplewidow build, who might take delivery around March. There are a bunch with the Aero package already delivered, but nobody seems to have taken delivery yet of one with the CF and Aero packages.
confirmed today my build date is feb 13th and my car is locked.. can’t make any changes. Can’t wait to see how she comes with both cf packages and aero.. I got every option except carbon ceramic brakes and I have all black performance seats and Cf interior trim and steering wheel.. my coupes total is $100,100 lol
Old 01-31-2019, 02:58 PM
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Originally Posted by purplewidow


confirmed today my build date is feb 13th and my car is locked.. can’t make any changes. Can’t wait to see how she comes with both cf packages and aero.. I got every option except carbon ceramic brakes and I have all black performance seats and Cf interior trim and steering wheel.. my coupes total is $100,100 lol
Looking forward to seeing it as well. I'm guessing you'll be getting yours 1-2 months before I get mine.
Old 01-31-2019, 03:35 PM
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Guys the minute you receive the car ask for the part number please hahaha
Old 02-02-2019, 10:23 PM
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For those in Europe with sedan or estate: https://www.kunzmann.de/shop/en/tuni...cedes-benz.htm

Love the S model with the lower trim. Previously only on the Edition 1 Coupe
Retro fitting 2019 rear diffuser and exhaust tips to pre facelift ?-photo83.jpg

Retro fitting 2019 rear diffuser and exhaust tips to pre facelift ?-photo561.jpg

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Old 06-03-2019, 08:29 AM
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As new deliveries are being made, any luck with a part number for the aero rear diffusor?
Old 06-06-2019, 03:15 PM
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diffuser is trim bumper and wind deflection. You also need trim piece. This is for gloss black.
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Old 06-07-2019, 05:57 AM
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Originally Posted by NJ 1161


diffuser is trim bumper and wind deflection. You also need trim piece. This is for gloss black.
Awesome thanks. So I can order the directly from the Mercedes dealership? Some previous franchises have been a bit funny about ordering parts. Also, this is for the coupe?
Old 06-07-2019, 03:06 PM
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Hi, yes for coupe. Yes, from merc. I have heard that some dealers can be funny with selling amg parts, but I found one who is more than happy.
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Old 06-08-2019, 09:23 PM
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These are the part numbers for the new diffuser for C63 S?
Old 06-10-2019, 09:34 AM
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Perfect thanks for all the help. You don't by any chance have the part number for the rest of the aero pack? (the front lip mainly) I ordered a new 19 coupe without the aero pack and now trying to fix that stupid mistake. I've had a look but can't find the part numbers.
Old 06-12-2019, 03:18 PM
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Originally Posted by Barca93
These are the part numbers for the new diffuser for C63 S?
Hi, yes c63s coupe in gloss black
Old 06-12-2019, 03:24 PM
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Originally Posted by DidierD
Perfect thanks for all the help. You don't by any chance have the part number for the rest of the aero pack? (the front lip mainly) I ordered a new 19 coupe without the aero pack and now trying to fix that stupid mistake. I've had a look but can't find the part numbers.
Not sure really. I’ve added edition 1 front spoiler, rear spoiler and side skirts which in my eyes are exactly the same as facelift parts but would like to guaranteed it. I can dig out the numbers for these if it helps.


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