Authorized Extreme Online Store dealer — MAP-priced. Pick your finish below; SKU updates to match.
or as low as $7.50/mo with Affirm
Available
Add the factory-aero-package look to any 2014-2019 Chevrolet Corvette C7 — Stingray, Z51, Grand Sport, or Z06. The Extreme Online Store add-on diffuser fins bolt onto the OEM rear diffuser using a precision-drilled template included with every kit. Same shape, two surface finishes, identical fitment.
Rear diffuser fin set + drilling template + mounting hardware. Lightweight ABS plastic with the chosen surface finish.
Mounts to factory rear diffuser. Drilling template included for precise alignment. No body modifications.
Carbon Flash (painted to match GM’s factory Carbon Flash Metallic) or Hydro-Dipped Carbon (real-carbon-look hydrographic film over ABS).
Same fit across Stingray, Z51, Grand Sport, and Z06. Both base and Z07-equipped diffusers supported.
You'll get an instant confirmation email with your part details and invoice. We source from a network of authorized suppliers across the country, so lead times vary by brand and part type — we'll send a tracking number the moment your parts move.
Made-to-order builds — carbon fiber bodywork, fabricated systems, custom finish work — run longer than off-the-shelf items because they're built per order. You'll get progress updates throughout the build.
Need a specific timeline on a part before you buy? Call 805-267-9762 or hit the chat — we'll check vendor stock direct and give you a straight answer.
Absolutely! Once your order ships, you'll get an email with a tracking link so you can follow its journey from our shop to your doorstep.
If your order ships via freight, you'll get a separate email with a direct link to the carrier's tracking page — easy and stress-free.
Things happen on the road — even to boxes. If your order arrives damaged, snap a few clear photos of the box and product and send them our way right away.
If your shipment is lost, just email or call us — we'll help track it down and guide you through the next steps to make it right.
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Your feedback helps us grow, create more content, and keep bringing performance-driven parts to the community. 🏁
or email Support@FFPerformance.co
Car parts can be a maze — good thing we brought the map. Our team's here to keep things smooth, simple, and maybe even a little fun.
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TERRY BAHAM (verified owner) –
Very small gap at the top, still love it though. No one better get that close to my vehicle to see it!