Directional linear fin design enhances airflow through diffuser tunnels for improved aerodynamics
Reduces rear-end turbulence and increases stability for performance driving
Easy installation with only four small holes drilled into the unpainted undertray
Reversible mod allows for a clean OEM look or optional body color finishes
Digitally engineered for a precise fit with the rear valence, molded from injection-formed PC composite
Summarized by Shop
ACS C8 Z06 ZR1 Rear Diffuser Insert
Upgrade the rear profile of your C8 Z06 or future C8 ZR1 with the ACS C8 Rear Diffuser Inserts—designed for enhanced styling and aerodynamic performance. Say goodbye to the plain rear valence and add a bold, motorsport-inspired look with this premium diffuser upgrade.
Easy to install, this modification
Material
Injection-formed PC composite
Finish
Carbon flash black or select body colors
Compatibility
2023 C8 Corvette Z06, 2025 C8 Corvette ZR1, 2027 C8 Grand Sport with center exhaust
Installation
Requires four small holes drilled into unpainted undertray
Includes
Two diffuser inserts, two mounting brackets, instructions, hardware
Summarized by Shop
5.0
4 ratings
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Absolutely amazing and the excellent product quality I have come to appreciate from ACS !
They have helped me with several of my SCCA\IMSA track cars both c6 and c8 and the quality they supply is unmatched in the industry.
They offer excellent customer service and support after the sale and they are upfront in their pricing.
Thank you once again,
Eric
SMP racing
Eric · June 7, 2026
Excellent product. Looks fantastic on the car. I recommend these to everyone.
Dusty · July 8, 2026
As always, ACS Composite makes the best quality Corvette parts by far!!! Second to none. The fitment is always spot on perfect and the materials are of the highest caliber.