C8 Corvette ZR1 and ZR1X ACS Composite Rear Window Spoiler

ACS Composite Rear Window Spoiler - C8 Corvette ZR1 and ZR1X

The C8 Corvette ZR1 arrived in 2025 and the ZR1X in 2026, which puts both cars entirely on the revised rear glass and leaves exactly one part to order: 50-4-151. The ACS Composite Rear Window Spoiler is a molded PC composite lip that sits along the upper edge of the hatch glass, below the wing and above the engine. There is no year to look up.

These are cars defined by a very large piece of aero, and the rear deck is where the eye goes because of it. Under the glass sits the twin-turbo engine, above it sits the wing, and between the two is a bare factory edge that nobody styled. The spoiler gives that edge a molded line in Carbon Flash Metallic Black, which is the same finish already on the window bezels and on much of the black trim these cars wear. It is a small piece on a loud car, and it is the sort of detail that reads as intent rather than addition. Owners looking for a c8 rear window spoiler usually arrive after tinting the hatch and finding the trimmed film edge visible from three feet away.

Product Details

• Part number: [50-4-151]CFZ
• Part: 50-4-151, the revised version for the 2025 to 2027 rear glass
• Fits: ZR1 from 2025 and ZR1X from 2026, coupe
• Material: PC composite, molded by resin transfer molding
• Finish: Carbon Flash Metallic Black, the only finish we carry
• Fixing: High strength 3M tape, applied to the glass edge
• Drilling: None
• Install time: Around thirty minutes
• Aero: Sits on the glass, clear of the wing and its uprights
• Built: North America

Benefits

• One part number for both cars, because neither was built before the glass changed
• Finishes the bare upper edge of the rear glass between the engine and the wing
• Hides a tint edge, which shows badly on a dark car with a lot of black trim
• Carbon Flash Metallic Black matches the bezels and the rest of the factory black package
• A c8 corvette rear spoiler that adds nothing to the aero, on a car whose aero is already decided

What to Expect

• Clean the glass edge, dry fit the piece, then peel and set it. Nothing is drilled and nothing is removed
• Work above sixty degrees and out of direct sun so the tape bonds properly
• The wing does not need to come off, and the spoiler does not touch it

CORVETTE COMPATIBILITY

• Generation: C8 Corvette
• Models: ZR1 and ZR1X
• Model Years: ZR1 2025 and later, ZR1X 2026 and later
• Engine: 5.5L LT7 V8, and on the ZR1X the LT7 with the front electric motor
• Front electric drive: ZR1X only. An electrified front axle, 186 hp and 145 lb-ft, 1,250 hp combined. GM calls the system eAWD. The ZR1 is rear-wheel drive
• Body: Coupe
• Part: 50-4-151 only

Why Buy from Custom Corvette Accessories?

Custom Corvette Accessories is enthusiast-run and Corvette-focused. The ACS Composite Rear Window Spoiler is a direct upgrade for C8 Corvette ZR1 and ZR1X owners who want the deck between the engine and the wing finished rather than left as a cut line.

The [50-4-151]CFZ is engineered for the revised rear glass carried by the ZR1 from 2025 and the ZR1X from 2026, and the ACS Composite Rear Window Spoiler delivers molded PC composite construction, a Carbon Flash Metallic Black finish matched to the factory black package, and a tape-mounted direct fit without compromising the wing or its uprights.