Carbon fiber PN database.

[seattlecubes]

It may have been mentioned earlier in the thread, but Auto Addicts makes an almost perfect replica kit. I had them install it and the fit/finish is indistinguishable from OEM. I know it is not right from GM, but it will get your there! Rear wing attached for reference.

They also make Carbon replacement pieces for some of the front vents.

Good company, good team. I had them do wheels, tires, springs, alignment, and a few other things. Nothing but good things to say!

(Not affiliated with them in any way).

-eric

Does it have the brown/bronze tint?

 

[KatyTxCT5V]

It may have been mentioned earlier in the thread, but Auto Addicts makes an almost perfect replica kit. I had them install it and the fit/finish is indistinguishable from OEM. I know it is not right from GM, but it will get your there! Rear wing attached for reference.

They also make Carbon replacement pieces for some of the front vents.

Good company, good team. I had them do wheels, tires, springs, alignment, and a few other things. Nothing but good things to say!

(Not affiliated with them in any way).

-eric

Thanks for sharing your experience and great to see lower cost alternatives.

The big difference on the OEM, besides the brownish hue, is the way the weave lacks the “V” design in the pattern on the rear spoiler, front splitter, upper grille header and rear diffuser.

For the person looking to score carbon fiber at less than OEM prices, good way to deck out your ride for sure. They even have the front diverters for the front splitter.

I’ve attached a pic for the front upper grille header and lower splitter. Zoom in and you can see the “V” pattern.

 

[DaleR]

Started doing a little digging:

2025 + CT5-V BW

42795061 - Front Splitter
84490400 - Right Wheel Deflector
84490401 - Left Wheel Deflector
85561511 (or 85517784) - Rear Spoiler
87825668 - Rear Diffuser

If anyone could confirm that would be great!

Did you ever get any type of conformation for those part numbers? I have a 2026 BW arriving towards the end of September/October time frame and Id like to have the parts all ready to install upon arrival. Also, is there any miscellaneous hardware that is needed for the install? TYIA

 

[CornerMan]

I checked and the Auto Addicts kit does not have the Brown Hue or "V Patterns." So good call illustrating that difference! I wanted to go OEM, and called around for quotes, but I could not justify the cost.

Should have traded Super Cruise for the Carbon Package (I never use the Super Cruise).

-eric

 

[huemangos]

Couldn't find anything in search, but any experience with any of the Savagecadillac stuff? for the 5's? I've got a spoiler on order with Terrence but woudl like to get the front splitter and wickers. But the Savagecadillac stuff looks pretty reasonable for additional CF like the side splitters too.

I know that they resell a lot of stuff that can be gotten from aliexpress, but my previous ct4 had one of their rear emblems with paint chipping off of it so I'm a bit wary about quality.

 

[fordperfaddict]

I checked and the Auto Addicts kit does not have the Brown Hue or "V Patterns." So good call illustrating that difference! I wanted to go OEM, and called around for quotes, but I could not justify the cost.

Should have traded Super Cruise for the Carbon Package (I never use the Super Cruise).

-

Did you ever get any type of conformation for those part numbers? I have a 2026 BW arriving towards the end of September/October time frame and Id like to have the parts all ready to install upon arrival. Also, is there any miscellaneous hardware that is needed for the install? TYIA

im definetely interested in this information as well

I checked GMparts direct website and it looks like all of those part numbers listed above are correct. I cannot get a price on the rear valence as it is on back order.
87825668

On a non carbon car, are there F Deflectors that are non carbon or are the deflectors only on a carbon car? They are so subtle in person you may not even notice they are there and save yourself the $1400.

 

[KatyTxCT5V]

On a non carbon car, are there F Deflectors that are non carbon or are the deflectors only on a carbon car? They are so subtle in person you may not even notice they are there and save yourself the $1400.

There are no F Deflectors on non carbon cars. The non carbon cars factory black front splitter is smaller than the carbon one and at the end at the fender blends flush. On a carbon car, the front splitter is larger and sticks out at the ends to accommodate the F Deflectors. Without them, it doesn’t look right IMO. They are expensive and small, but they serve a purpose as well to deflect the air to the outside of the front tire.

Here are some pictures from different angles that I could quickly find.

 

[fordperfaddict]

ah okay good to know. I was thinking on a non CF car they would be the same shape except plastic. thanks

 

[awg]

Did you ever get any type of conformation for those part numbers? I have a 2026 BW arriving towards the end of September/October time frame and Id like to have the parts all ready to install upon arrival. Also, is there any miscellaneous hardware that is needed for the install? TYIA

Yes, these P/N's for the 2025+ model are correct.
If you search on a parts site and select your vehicle it shows a match, for example (in Canada): https://www.gmcpartscanada-spg.ca/

 

[Pani]

Do folks have experience/recommendations on a non-OEM carbon fiber front splitter for the 2025 CT5-V BW? The only one I am finding is from Savage and I'm unsure about quality.

Thanks!

 

[CornerMan]

As I have expressed in this email thread, the Auto Addicts lip is fantastic, but it is not an OEM equivalent. The stock lip has a matched V-shaped pattern, and there is a bronze hue in the carbon weave.

For my use case, I was happy with the Auto Addicts lip, but I fully understand the desire for an OEM option.

-eric

 

[2023 CT5-V Blackwing]

Here are the OEM carbon fibers part numbers for both the 4 & 5 Blackwing. Use a variety of online sources to check prices such as Gmpartsdirect, GMpartscorp.com, etc.

CT4-BW:

Rear Spoiler PN 85561509
Front Splitter
PN 84433235(old)85563054(new)
Wheel deflector PN 84586281
Wheel deflector PN 84586282
Rocker Extension PN 84795019
Rocker Extension PN 84795020
Dive Plane PN 84996873
Dive Plane PN 84996874
Rear Valance Diffuser PN 84981410


CT5-BW:

Front Grille Header PN 86788444
front splitter PN 84432226
front side wheel deflector right PN 84490400
front side wheel deflector left PN 84490401
deflector kit PN 84624552
right rocker molding PN 84965190
left rocker molding PN 84965189
rear wing PN 85561511
rear diffuser PN 84981408

Ive used Savage and their quality is first rate. All my emblems are black with the color inlaid. Front, rear and on the left and right fenders.

 

[Ergoc5]

Do folks have experience/recommendations on a non-OEM carbon fiber front splitter for the 2025 CT5-V BW? The only one I am finding is from Savage and I'm unsure about quality.

Thanks!

Exhibition of Speed seems to have high quality stuff

 

[Finally-a-V]

Exhibition of Speed @Terrance Speed has great quality rear spoilers. I bought one and can highly recommend it. Beautiful V weave, easy on with the right tools (Thanks to @rubberduck). Not a paid endorsement.