I didn't want to muck up a different thread.
Getting non Z51 here. If I add either a splitter that someone is selling from a Z51, or buy a new carbon flash, and if I then add the extended size splash guards as well as factory rockers are they going to match?
Not looking for carbon fiber. Basic splitter and side rockers.
I believe they will match, just not positive.
Thx.

 

No, they won't match, but does it matter? The OEM rocker extension, Z51 splitter and splash guards are textured plastic, and they don't match the carbon flash accents on the rest of the car. I just ordered the 5VM-style and XL splash guards in carbon flash, and they won't match my OEM rocker extension, but I'm not bothered by it at all.

 

If you are asking about the factory Z51 splitter, Factory Splash Guards and Factory Extended rockers, yes they will match each other but not the Carbon Flash accents on the rest of the car.

 

Bit confused on what you want to do. I added side skirts to my 2014 Z51 after, even with GM splash guards, rocks where marking my rocker panels. For my 2017 Grand Sport ordered the Stage 2 Aero package to get the full length side skirts (not the 3/4 plastic ones that come standard.) When I sold the car after 31/2 years the rocker panels were like new.

For the C8 I installed the GM splash guards but had to wait 2 months for my C7 Carbon side skirts and their one piece matching carbon flash splitter. Replaced the Z51 rubber one that comes with the car. In the two months my C8 Rockers (as GM calls them BUT they are really part of the body) were marked. Fortunately The C7 Carbon side skirts covered those parts.

Here are some pics:


This is the matching carbon flash painted splitter that replaced the smaller GM rubber splitter.


This is a very telling pic by a Tracker to show where track rubber hit his car. That is what I saw in the 2 months before I installed my side skirts. Not just what GM calls rockers were marked but the are behind them up to the front of the rear wheel well. Side skirts stick out 3 inches and block all rocks. They hit on the flat bottom and only ants can see marks!

 

Sorry for the confusion, I'm an idiot.
I'm using/mixing the wrong terms.
What I should have said is I'm trying to match the black splitter NOT the carbon flash. Then have the guards and rockers match the plain black.
I plan on going to MM this am to see them in person to make sure I know what I want.
Apologies for my stupidity.
And thx for all the info.

 

^^^^
Never stupid questions. It's GM's combustion on what they call what. The C8 website Configure a C8 is no help!

GM calls the Rockers when IMO they are just part of the body shape. Rocker panels have always referred to the body structure along the bottom center of the car. What GM calls Rockers are just relative tight fitting black composite that mounts to the body structure that covers about half the "rocker panel" which is NOT here the major debris marking occurs!
MY EXPERIANCE
My 2014 C7 came with clear "protective plastic" where GM knew the issue of pebbles and debris thrown by the front tires occurred. The relatively thick clear plastic started 1/2 way in the door back up the front of the rear wheel well. My plastic protective material was marked after a few weeks and I had installed GM Splash Guards day 1! I added full length aftermarket "Side Skirts" that stopped all marks and was able to remove the GM Plastic. When I sold it 3 1/2 years later the rocker panels looked new.

For my 2017 Grand Sport I ordered the Stage 2 Aero Option that included full length carbon flash painted carbon fiber side skirts (not the 2/3 length composite ones that came with the Grand Sport.

For my C8 knew I wanted side skirts to stop pebbles thrown from the front tires marking the "rocker panel area." They initially offered in carbon flash painted carbon fiber like I had on my Grand Sport (for $3850) but that was constrained soon after they announced part number and price. I had to order the visible carbon fiber 5VM ($4850) but that was constainered as well. I ordered aftermarket splitter and side skirts that looked like the GM offered 5VM. Current the combo sells for ~$1600 from C7 Carbon a Platinum vendor.)

On the 2021 Configure a C8 under SIDE ROCKER it shows 3, two full length side skirts, one painted Carbon Flash, the other in Visible Carbon Fiber AND the simple composite that fits tight to the body on the section they call a "Rocker!" NOT your issue IMO they are not clear!

My 2014 C7 protective plastic I removed


Even my Grand Sport had some GM plastic protector. Since I had full length side skirts I removed.

This is where a Tracker showed his car get pelted with Track rubber thrown by the front tires. GM splash guards, which I have, do little for the front