One of the joys of owning a C8 Corvette Stingray is the ability to make it your own and our friends at ACS Composite are here to help you raise your game with the highest quality of parts available. Of course, we believe every C8 Stingray should be protected by ACS Composite’s popular C8 Rock Guards as they stop debris from hitting your Corvette. ACS Rock Guards was the first mod added to my 2025 Corvette E-Ray and knowing they are there is some great piece of mind! For those who want to enhance the looks and performance of their Corvettes, ACS Composite offers a C8 Coupe Rear Window Spoiler as well as these innovative C8 Rear Diffuser Inserts that fit your Stingray as well as the E-Ray.
Are you ready to make the Corvette in your driveway the one you’ve wanted all along? Check out these customer-favorite mods from ACS Composite!
C8 Stingray Rock Guards
If you’re a new C8 Corvette Stingray owner, one of the first mods we recommend is a set of ACS Composite C8 Stingray Rock Guards. No other Rock Guard offers the protection as those from ACS Composite. That’s because their C8 Rock Guards feature a wider edge, a bladed shield that helps control rocks and road debris inside the wheel well, and an added downward extension that provides great stopping power front and back.
ACS Composite manufacturers their Rock Guards from PC Composite material and they are designed to withstand impacts as rocks are deflected away from your car. ACS tells us their C8 Rock Guards provides double the protection area over the standard OEM mud flaps offered by GM. While it’s true that costly paint protection film can help minimize the damage to your exterior paint after the rock has hit your paint, ACS Rock Guards help eliminate the threat altogether.
It takes as little as 30 minutes to install as ACS Composite’s C8 Stingray Rock Guards utilize the stock OEM mounting points in the wheel wells, so no drilling or double-sided tape is necessary. ACS Composite also offers an install video that can be found on the company’s YouTube Channel. The C8 Stingray Rock Guards are sold as a set of four (2 front/2 rear) for $499 with free shipping included.
Rock Guard protection is also available for the C8 Corvette Z06 and E-Ray.
C8 Coupe Rear Window Spoiler
One of the engineering challenges for the C8 Corvette Coupe was to make sure that there was plenty of air circulation available within the engine compartment. Engineers created a rear window engine hatch with venting on the sides as well as the gap on the bottom edge of glass to allow for hot air to escape from the engine bay. To us, that raw edge of glass has always looked a bit unfinished to us, and that’s where ACS Composite comes in. ACS has developed a this new spoiler for the C8 Rear Window that conceals the edge while enhancing the look of the rear hatch.
The C8 Corvette Coupe Rear Window Spoiler has two wicker edges on the sides that matches the various C8 spoilers with wicker edges, and it integrates perfectly into the Coupe’s rear design. If your rear hatch glass has been tinted, the C8 Coupe Rear Window Spoiler will also hide and secure the edge of the tint. There is also a drainage system to allow any water from car washing or driving in the rain to drain through a center opening.
The C8 Coupe Rear Window Spoilers are manufactured from ACS Composite’s proprietary PC Composite material and is painted in Carbon Flash Metallic (CFZ) which is guaranteed to match all C8 Corvette accent pieces. The spoiler installs in a snap as it locks into place, and it’s secured to the rear edge of the window with double-sided tape that’s included. The C8 Coupe Rear Window Spoiler is $249.00 and shipping is free! Check out the install video below to see how it looks and how its installed on the Corvette.
C8 Stingray Rear Diffuser Insert
ACS Composite knows that every detail matters when it comes to enhancing the aerodynamics of the C8 Corvette Stingray. How a Corvette moves through the air can significantly impact its speed, handling, and overall performance. One component that plays a crucial role in optimizing a race car’s aerodynamics is the rear diffuser. While Chevrolet doesn’t offer a rear diffuser on the C8 Corvette Stingray, you can bet our friends at ACS Composite would come up with just a solution and we know have our first look at the ACS Composite rear diffuser for the C8 Corvette Stingray.
Corvette enthusiasts are always wanting to boost performance without sacrificing style, and these Rear Diffuser Inserts from ACS Composite do that. Not only do the Rear Diffusers for the Stingray look great, they help reduce turbulence and direct fast-moving air away from the undercarriage. These are manufactured from ACS Composite’s proprietary PC Composite via injection, and then are painted in Carbon Flash Black to perfectly match the Stingray’s trim parts. Select body colors are also available for even a bolder look.
Installation of the ACS C8 Rear Diffusers is completely reversable. The rear diffusers use a special mounting bracket that attaches to the car utilizing stock mounting points already on the rear fascia. There are two holes per panel that do require drilling into the underside of the rear fascia. You can watch Joseph demonstrating the parts before mounting them on a C8 Stingray in this video below.
ACS Composite’s C8 Corvette Stingray Rear Diffuser fit both the Stingray and the E-Ray, and they are offered for $879/pair plus free shipping is included.
ACS Composite
ACS Composite is all about helping Corvette owners get the most out of their sports cars with their lineup of high quality parts and accessories. Their current portfolio of parts and accessories for the C7/C8 includes a number of different spoilers, front splitters, and side rocker panels, plus they offer parts and accessories for protecting your car including Jacking Pucks, C8 Wheel Stud Extenders, and their C8 Protective Lug Nut Tool.
Visit ACS Composite on the web at acscomposite.com or call them at 1-888-227-2270 for any pre-sale questions you may have.
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ACS Composite
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