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ACS Composite

C8 Stingray Diffuser Insert

C8 Stingray Diffuser Insert


Regular price $899.00 USD
Regular price Sale price $899.00 USD
Sale Sold out

ACS C8 Stingray Rear Diffuser Insert

Elevate your C8 Stingray with the ACS C8 Stingray Rear Diffuser Inserts for better performance and style. Say goodbye to the bland rear valence and add a bold, aggressive look with our cutting-edge diffuser conversion.

Easy to install, this modification requires just four simple holes to be drilled on the unpainted undercarriage pan and is completely reversible.

Not only does the ACS Diffuser enhance the appearance of your vehicle's rear end, it also improves aerodynamics by reducing turbulence and directing fast-moving air away from the undercarriage. Perfect for performance enthusiasts seeking to upgrade their C8 Stingray with both style and performance.


  • Enhance airflow in your C8 Stingray's diffuser tunnels with a linear directional design
  • Boost aerodynamics with reduced turbulence at the rear
  • Reversible mod
  • Painted in Carbon Flash Black for a seamless and stock look or available in select body colors for a bolder appearance

How it's made

Made with precision, the ACS Diffuser Inserts are digitally designed specifically for the C8 Stingray, ensuring a perfect fit with the C8's rear valence. Crafted from PC Composite via injection with a Carbon Flash Black finish to match the Stingray's trim parts. Select body colors are available for an even bolder look.

What's in the box?

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


  • 2020+ C8 Corvette Stingray 
  • Designed for factory OEM exhaust


Unlisted body colors will be painted on order. Please expect extended lead times:

  • Other Colors: Please allow four (4) weeks for processing. Be sure to provide the color code or VIN in the "Note" field during checkout.


    PC Composite

    A polymer formulation developed by ACS Composite to withstand minor impacts, scrapes and heat distortion. 3x stronger than ABS.

    Install video

    Surface finish

    The following surface finishes are available on the C8 Stingray Diffuser Insert:

    Carbon Flash Metallic Black

    A paint swatch of Carbon Flash Metallic Black
    RPO: CFZ | Paint code: WA501Q

    Torch Red

    A paint swatch of Corvette Torch Red
    RPO: GKZ | Paint code: WA9075

    Red Mist Metallic Tintcoat

    A paint swatch of Corvette Red Mist Tintcoat
    RPO: GPH | Paint code: WA245F

    Arctic White

    A paint swatch of Arctic White
    RPO: G8G | Paint code: WA625G

    Rapid Blue

    A paint swatch of Corvette Rapid Blue GMO
    RPO: GMO | Paint code: WA632D

    Caffeine Metallic

    a paint swatch of caffeine metallic
    RPO: G48 | Paint code: WA613G


    A paint swatch of primer

    White Pearl Metallic Tri-Coat

    A paint swatch of Corvette White Pearl Metallic Tri-Coat G1W
    RPO: G1W | Paint code: WA140X

    Shadow Gray Metallic

    A paint swatch of Corvette Shadow Gray Metallic SJI
    RPO: SJI | Paint code: WA626D

    Elkhart Lake Blue Metallic

    A paint swatch of Elkhart Lake Blue Metallic
    RPO: GS7 | Paint code: WA625D

    Ceramic Matrix Gray

    A paint swatch of Ceramic Matrix Gray
    RPO: G9F | Paint code: WA459C

    Sebring Orange Tintcoat

    A paint swatch of Corvette Sebring Orange
    RPO: G26 | Paint code: WA418C

    Zeus Bronze Metallic

    A paint swatch of Zeus Bronze Metallic
    RPO: GUI | Paint code: WA615D

    Blade Silver

    A paint swatch of blade silver
    RPO: GAN | Paint code: WA636R

    Accelerate Yellow

    A paint swatch of Accelerate Yellow
    RPO: GD0 | Paint code: WA622D

    Amplify Orange Tint

    A paint swatch of Amplify Orange
    RPO: GTR | Paint code: WA705U

    Silver Flare Metallic

    A paint swatch of a Corvette silverflare metallic
    RPO: GSJ | Paint code: WA251F

    Hypersonic Gray

    A paint swatch of Hypersonic Gray Metallic
    RPO: GA7 | Paint code: WA623G
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    Vehicle fitment

    • C8 Stingray
    1. Coupe
    2. Convertible/HTC

    Shipping & Returns

    Free shipping & 30-day returns if you are not fully satisfied. See Return Policy for full details.

    C8 Stingray Diffuser Insert care instructions View full details
    • Tools Required

    • Made in North America

      Buy with confidence knowing each part was designed, made, and painted within North America.

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