ACS or EOS
Melting Slicks
Joined: Jan 2015
Posts: 2,101
Likes: 948
From: Fleming Island Florida
ACS by a long shot! Although, you might consider EOS for the lower cost. There’s a high probability of damaging the splitter. That’s the only reason I have an EOS up front. Everything else is ACS.
Thread Starter
Heel & Toe
Joined: Jun 2002
Posts: 19
Likes: 18
From: Pickerington Ohio
I'm used to a low front end. I have the carbon fiber kit on my 16 CTS-V. By comparison, even the ACS piece is cheap, price wise, when compared to the oem cf splitter for the V. Appreciate the heads up and info.
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From: Northern Illinois
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I don't think anyone beats ACS quality. I have only seen EOS in posts on here, but they look good too
Le Mans Master
Joined: Nov 2015
Posts: 7,382
Likes: 3,499
From: Lake Havasu City Arizona
I don't have any of their parts, but I follow the comments about them on the forum. EOS is very hit and miss as far as what you are going to receive. ACS is a little over priced in my opinion, but you will get a quality product based on what I have read here on the forum.
Instructor
Joined: Oct 2019
Posts: 198
Likes: 109
From: Marietta
Another vote for ACS. I've purchased from them: XL front and rear rock guards; front fender extensions, and a stage 2 spoiler-- all in carbon flash black. No issues on fitment or packaging. Most of the boxes included instructions except one. But easy enough to install using website/YouTube.
Melting Slicks
Joined: Dec 2007
Posts: 2,902
Likes: 666
From: North Fulton Georgia
I've had poor quality product from EOS. Took several failed replacements for some things and ended up going elsewhere. Only EOS item I kept were the rear diffuse fins. Still don't like them and eventually will replace. YMMV. Good luck! 
Melting Slicks
Joined: Dec 2007
Posts: 2,902
Likes: 666
From: North Fulton Georgia
I don't have any of their parts, but I follow the comments about them on the forum. EOS is very hit and miss as far as what you are going to receive. ACS is a little over priced in my opinion, but you will get a quality product based on what I have read here on the forum.
Advanced
Joined: Mar 2021
Posts: 84
Likes: 34
From: Nebraska
I had the same setup. Went with acs splitter with undertray and stage 3 deflectors, XL front fender extensions, and XL rear rock guards. It’s a very nice clean look and all in carbon flash so matches the side skirts.
Le Mans Master
Joined: Mar 2016
Posts: 9,123
Likes: 3,975
From: 2019 CMG Z06
I’m an ACS fan all the way, including the painted front fender extensions (vs the factory textured piece). However, if you want or have the factory undertray for the splitter, C7 Carbon is the only company I know of that fits the factory undertray. Also a great quality piece.
Le Mans Master
Joined: Mar 2016
Posts: 9,123
Likes: 3,975
From: 2019 CMG Z06
