ACS Composite
C7 Rear Quarter Extensions
C7 Rear Quarter Extensions
SKU:[45-4-257]CFZ[45-4-257-N]
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ACS Composite C7 Corvette Rear Quarter Extensions
Address the need for matching rear fender extensions on your C7 Corvette ZR1, Z06, or Grand Sport. Inspired by the front Z06 fender extensions, these rear quarter extensions ensure cohesive coverage and aesthetics from front to back.
Key Benefits of ACS Rear Quarter Extensions
- Provides protection for the inside paint surfaces
- Pre-painted in Carbon Flash Black for a seamless look
- Engineered for a perfect fit using PC Composite
- Easy, reversible installation without drilling holes
- Includes driver and passenger side extensions
How it's made
ACS Rear Quarter Extensions are digitally designed for a precise fit on your Corvette. Made from injection-molded PC Composite and painted in Carbon Flash Black, they match the Corvette's trim parts, including the diffuser, fender inserts, bumper grill, and hood insert.
How to install
Installation is a snap with our easy-to-follow instructions. The extensions attach to the quarter panel section and are secured with OEM screws for the deflector portion. Double-sided tape seals the surface, and if needed, the extensions can be removed for maintenance without any holes drilled – a fully reversible mod!
Material
Material
PC Composite
A polymer formulation developed by ACS Composite to withstand minor impacts, scrapes and heat distortion. 3x stronger than ABS.
Install video
Install video
Surface finish
Surface finish
The C7 Rear Quarter Extensions comes in the following surface finish:
Vehicle fitment
Vehicle fitment
Shipping & Returns
Shipping & Returns
Free shipping & 30-day returns if you are not fully satisfied. See Return Policy for full details.


![ACS Composite C7 Corvette Rear Quarter Extensions in Carbon Flash Black [45-4-257]CFZ[45-4-257-N]: Provides protection and a seamless look for your Corvette's rear fender.](http://acscomposite.com/cdn/shop/products/45-4-257-A.jpg?v=1699284844&width=1445)
![ACS Composite C7 Corvette Rear Quarter Extensions in Carbon Flash Black [45-4-257]CFZ[45-4-257-R] - Provides protection and a seamless look for your Corvette.](http://acscomposite.com/cdn/shop/products/45-4-257-B.jpg?v=1699284844&width=1445)
![ACS Composite C7 Corvette Rear Quarter Extensions in Carbon Flash Black [45-4-257]CFZ, easy installation, perfect fit, and paint protection.](http://acscomposite.com/cdn/shop/products/45-4-257-4.jpg?v=1699284844&width=1445)



Product Care Instructions
CFZ Wax - Carbon Flash Black Paint Treatment Wax
Keep your Corvette & ACS products looking sharp with our ACS Composite CFZ Wax. This treatment is essential for maintaining, restoring, and prolonging the lifespan of your Corvette's Carbon Flash Metallic Black painted parts.
Steps to apply CFZ Wax:
- Clean: Ensure the surface is clean and free from dust or debris.
- Apply: Using the applicator provided, apply the CFZ Wax directly onto the painted surface.
- Dry: Allow the wax to dry to a haze.
- Buff: Using a clean microfiber cloth, gently buff the surface until it shines.
Repeat this process once a month or as needed to maintain the appearance and durability of your Corvette's Carbon Flash Metallic Black painted parts for a best in show finish.
Benefits of using CFZ Wax:
- Fills and conceals minor rock chipping on Carbon Flash Black paint.
- Prevents white hazing against black paint.
- Can be applied by hand or double-action polisher.
- Includes a FREE microfiber cloth!
ReNew - Plastic and Rubber Maintainer & Protector
Enhance and protect the look and appearance of all plastic and rubber trim in your car with ACS Composite's ReNew. This is perfect for restoring the appearance of tires, wheel caps, cargo, trunk and floor liners, rubber gaskets, and the underside of our splitters, rockers, and rock guards.
Steps to apply ReNew:
- Clean: If the surface is extremely dirty, pre-wash using your preferred products, then rinse and let dry.
- Spray: Apply ReNew directly on the surface or onto a microfiber cloth or applicator pad.
- Spread: Evenly distribute the product on the surface.
- Dry: Wipe dry for a matte finish or let dry for a shiny finish.
Reapply as needed to maintain the appearance and durability of your car's rubber and plastic trims.
Benefits of using ReNew:
- Can be used on the interior and exterior.
- Body shop safe (silicon free).
- Helps maintain the look and appearance of vinyl, rubber, leather, and plastic.
- Leaves a dry matte or shiny finish with a fragrant scent.
- Finish lasts up to 30 days and resists detergents.
By using both the CFZ Wax and ReNew, you can keep your Corvette looking as good as new. Regular maintenance and care will not only improve the look of your car but also prolong the lifespan of its parts. Start giving your Corvette the care it deserves today!
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Tools Required
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Made in North America
Buy with confidence knowing each part was designed, made, and painted within North America.
Customer Gallery
Check out these customer builds featuring the C7 Rear Quarter Extensions!





