New C8 Stingray E-Ray GS Diffuser Insert for Outboard Exhaust 2020-2026

ACS C8 Stingray - E-Ray Rear Diffuser Insert

Elevate the rear of your C8 Stingray or E-Ray with the ACS C8 Rear Diffuser Inserts. Replace the plain factory rear valence appearance with a more aggressive, performance-inspired diffuser design.

Installation is simple and requires only four holes to be drilled into the unpainted undercarriage panel. The modification is fully reversible.

In addition to enhancing the appearance of the rear of the vehicle, the ACS Diffuser Inserts help manage airflow by reducing turbulence and directing fast-moving air away from the undercarriage.

Benefits

• Enhances airflow through the diffuser tunnels with a linear directional design
• Helps reduce turbulence at the rear of the vehicle
• Fully reversible modification
• Painted in Carbon Flash Black for an OEM-style appearance, with select body-color options also available

How It's Made

Digitally designed specifically for the C8 Stingray and E-Ray, the ACS Diffuser Inserts are engineered for a precise fit with the factory rear valence. Each insert is injection molded from durable PC Composite and finished in Carbon Flash Black to match the Corvette's factory exterior trim. Select body colors are also available for a more customized appearance.

What's in the Box?

• Two Diffuser Inserts (Carbon Flash Black or select body colors)
• Two Mounting Brackets
• Instructions
• Installation Hardware

Compatibility

• 2020+ C8 Corvette Stingray with outboard exhaust
• 2024+ C8 Corvette E-Ray
• 2027+ C8 Corvette Grand Sport with NPP outboard exhaust
• Standard version designed for factory OEM exhaust

Aftermarket Exhaust Clearance Option

An Aftermarket Exhaust Clearance version is available for vehicles equipped with select aftermarket exhaust systems such as Borla and Corsa.

This version is currently offered in Carbon Flash Black (CFZ) only.

If you purchase the standard diffuser and later install an aftermarket exhaust requiring additional clearance, contact ACS Composite and we can provide the trimming template needed to modify your diffuser.

For 2027+ Stingray and Grand Sport models equipped with the center quad-exit exhaust, please use the dedicated center-exit diffuser:

C8 Center Quad-Exit Rear Diffuser Insert

CUSTOM PAINT

Unlisted body colors are painted to order. Please expect extended lead times:

• Other Colors: Please allow four (4) weeks for processing.

Looking for the Z06 / ZR1 version?

Fits Chevrolet Corvette 2020-2026.

Options and finishes are selected on this product. Each selection keeps its ACS part number.